./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.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_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/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_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/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_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/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 a22440a8f255aec9d5730865f842f7cbb927d7105e4870e8c7e734895eef852b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:23:57,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:23:57,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:23:57,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:23:57,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:23:57,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:23:57,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:23:57,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:23:57,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:23:57,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:23:57,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:23:57,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:23:57,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:23:57,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:23:57,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:23:57,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:23:57,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:23:57,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:23:57,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:23:57,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:23:57,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:23:57,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:23:57,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:23:57,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:23:57,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:23:57,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:23:57,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:23:57,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:23:57,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:23:57,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:23:57,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:23:57,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:23:57,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:23:57,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:23:57,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:23:57,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:23:57,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:23:57,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:23:57,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:23:57,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:23:57,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:23:57,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-02 22:23:57,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:23:57,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:23:57,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:23:57,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:23:57,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:23:57,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:23:57,753 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:23:57,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:23:57,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:23:57,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:23:57,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:23:57,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:23:57,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:23:57,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:23:57,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:23:57,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:23:57,756 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:23:57,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:23:57,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:23:57,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:23:57,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:23:57,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:23:57,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:23:57,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:23:57,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:23:57,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:23:57,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:23:57,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:23:57,760 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:23:57,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:23:57,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:23:57,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:23:57,761 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_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a22440a8f255aec9d5730865f842f7cbb927d7105e4870e8c7e734895eef852b [2021-11-02 22:23:58,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:23:58,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:23:58,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:23:58,121 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:23:58,122 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:23:58,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i [2021-11-02 22:23:58,198 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/data/0e097cf44/18c1739bf4b7420db062748fd5a44c8d/FLAG8a605aebb [2021-11-02 22:23:58,815 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:23:58,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i [2021-11-02 22:23:58,824 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/data/0e097cf44/18c1739bf4b7420db062748fd5a44c8d/FLAG8a605aebb [2021-11-02 22:23:59,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/data/0e097cf44/18c1739bf4b7420db062748fd5a44c8d [2021-11-02 22:23:59,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:23:59,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:23:59,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:23:59,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:23:59,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:23:59,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5bf6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59, skipping insertion in model container [2021-11-02 22:23:59,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:23:59,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:23:59,424 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_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i[873,886] [2021-11-02 22:23:59,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:23:59,442 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:23:59,457 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_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i[873,886] [2021-11-02 22:23:59,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:23:59,477 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:23:59,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59 WrapperNode [2021-11-02 22:23:59,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:23:59,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:23:59,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:23:59,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:23:59,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:23:59,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:23:59,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:23:59,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:23:59,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:23:59,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:23:59,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:23:59,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:23:59,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (1/1) ... [2021-11-02 22:23:59,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:23:59,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:23:59,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:23:59,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:23:59,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:23:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:23:59,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:23:59,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:23:59,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:23:59,863 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-02 22:23:59,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:23:59 BoogieIcfgContainer [2021-11-02 22:23:59,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:23:59,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:23:59,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:23:59,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:23:59,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:23:59" (1/3) ... [2021-11-02 22:23:59,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c09a116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:23:59, skipping insertion in model container [2021-11-02 22:23:59,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:23:59" (2/3) ... [2021-11-02 22:23:59,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c09a116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:23:59, skipping insertion in model container [2021-11-02 22:23:59,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:23:59" (3/3) ... [2021-11-02 22:23:59,875 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark17_conjunctive.i [2021-11-02 22:23:59,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:23:59,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-02 22:23:59,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:23:59,946 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 22:23:59,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 22:23:59,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:23:59,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 22:23:59,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:00,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 22:24:00,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-02 22:24:00,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:00,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280460556] [2021-11-02 22:24:00,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:00,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:00,272 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 22:24:00,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:00,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280460556] [2021-11-02 22:24:00,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280460556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:00,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:00,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:24:00,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704127115] [2021-11-02 22:24:00,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:24:00,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:00,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:24:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:24:00,299 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 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 22:24:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:00,365 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-02 22:24:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:24:00,367 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 22:24:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:00,377 INFO L225 Difference]: With dead ends: 35 [2021-11-02 22:24:00,377 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 22:24:00,380 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 22:24:00,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 22:24:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 22:24:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 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 22:24:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-02 22:24:00,420 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2021-11-02 22:24:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:00,421 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-02 22:24:00,422 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 22:24:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-02 22:24:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:24:00,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:00,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:00,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:24:00,425 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-02 22:24:00,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:00,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176379250] [2021-11-02 22:24:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:00,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:00,506 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 22:24:00,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:00,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176379250] [2021-11-02 22:24:00,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176379250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:00,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:00,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:24:00,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144535122] [2021-11-02 22:24:00,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:24:00,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:24:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:24:00,513 INFO L87 Difference]: Start difference. First operand 15 states and 15 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 22:24:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:00,558 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-11-02 22:24:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:24:00,559 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 22:24:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:00,560 INFO L225 Difference]: With dead ends: 19 [2021-11-02 22:24:00,560 INFO L226 Difference]: Without dead ends: 18 [2021-11-02 22:24:00,561 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 22:24:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-02 22:24:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-11-02 22:24:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 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 22:24:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-02 22:24:00,565 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-02 22:24:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:00,566 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-02 22:24:00,566 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 22:24:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-02 22:24:00,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:24:00,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:00,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:24:00,568 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-11-02 22:24:00,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:00,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90172765] [2021-11-02 22:24:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:00,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:00,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:00,637 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 22:24:00,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:00,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90172765] [2021-11-02 22:24:00,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90172765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:00,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:24:00,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:24:00,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434982819] [2021-11-02 22:24:00,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:24:00,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:24:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:24:00,639 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:00,658 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-02 22:24:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:24:00,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-02 22:24:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:00,660 INFO L225 Difference]: With dead ends: 16 [2021-11-02 22:24:00,660 INFO L226 Difference]: Without dead ends: 15 [2021-11-02 22:24:00,661 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 22:24:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-02 22:24:00,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-02 22:24:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 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 22:24:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-02 22:24:00,665 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-02 22:24:00,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:00,666 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-02 22:24:00,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:00,666 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-02 22:24:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:24:00,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:00,667 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:00,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:24:00,668 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-02 22:24:00,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:00,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849861028] [2021-11-02 22:24:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:00,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:00,755 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 22:24:00,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:00,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849861028] [2021-11-02 22:24:00,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849861028] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:00,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822012721] [2021-11-02 22:24:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:00,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:00,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:00,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:24:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:00,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:24:00,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:00,972 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 22:24:00,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822012721] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:00,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:00,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-02 22:24:00,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978886452] [2021-11-02 22:24:00,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:24:00,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:00,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:24:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:24:00,988 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 22:24:01,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:01,048 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-02 22:24:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:24:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 10 [2021-11-02 22:24:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:01,050 INFO L225 Difference]: With dead ends: 21 [2021-11-02 22:24:01,050 INFO L226 Difference]: Without dead ends: 20 [2021-11-02 22:24:01,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 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 22:24:01,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-02 22:24:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-11-02 22:24:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 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 22:24:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-02 22:24:01,055 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2021-11-02 22:24:01,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:01,056 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-02 22:24:01,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 22:24:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-02 22:24:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:24:01,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:01,057 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:01,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:01,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:01,284 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:01,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-11-02 22:24:01,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:01,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042968770] [2021-11-02 22:24:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:01,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:01,417 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 22:24:01,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:01,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042968770] [2021-11-02 22:24:01,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042968770] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:01,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468172538] [2021-11-02 22:24:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:01,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:01,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:01,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:24:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:01,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:24:01,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:01,538 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 22:24:01,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468172538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:24:01,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:24:01,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-02 22:24:01,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778349471] [2021-11-02 22:24:01,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:24:01,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:24:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:24:01,542 INFO L87 Difference]: Start difference. First operand 18 states and 18 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 22:24:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:01,574 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-02 22:24:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:24:01,575 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 22:24:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:01,576 INFO L225 Difference]: With dead ends: 18 [2021-11-02 22:24:01,576 INFO L226 Difference]: Without dead ends: 17 [2021-11-02 22:24:01,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 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 22:24:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-02 22:24:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-02 22:24:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-02 22:24:01,581 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-11-02 22:24:01,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:01,581 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-02 22:24:01,582 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 22:24:01,582 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-02 22:24:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:24:01,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:01,583 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:24:01,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:01,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:01,808 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:01,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-11-02 22:24:01,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:01,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587556698] [2021-11-02 22:24:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:01,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:01,892 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 22:24:01,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:01,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587556698] [2021-11-02 22:24:01,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587556698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:01,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185785924] [2021-11-02 22:24:01,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:01,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:01,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:01,901 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:01,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:24:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:01,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:24:01,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:02,064 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 22:24:02,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185785924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:02,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:02,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-02 22:24:02,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001107635] [2021-11-02 22:24:02,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:24:02,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:24:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:24:02,067 INFO L87 Difference]: Start difference. First operand 17 states and 17 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 22:24:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:02,108 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-02 22:24:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:24:02,109 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 22:24:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:02,110 INFO L225 Difference]: With dead ends: 21 [2021-11-02 22:24:02,110 INFO L226 Difference]: Without dead ends: 20 [2021-11-02 22:24:02,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:24:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-02 22:24:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-02 22:24:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-02 22:24:02,114 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2021-11-02 22:24:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:02,114 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-02 22:24:02,114 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 22:24:02,115 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-02 22:24:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:24:02,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:02,115 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-02 22:24:02,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:02,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:02,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:02,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:02,333 INFO L85 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2021-11-02 22:24:02,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:02,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970135291] [2021-11-02 22:24:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:02,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:02,455 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 22:24:02,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:02,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970135291] [2021-11-02 22:24:02,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970135291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:02,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895177824] [2021-11-02 22:24:02,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:02,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:02,464 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:02,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:24:02,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:24:02,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:24:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:24:02,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895177824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:02,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:02,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2021-11-02 22:24:02,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871604822] [2021-11-02 22:24:02,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:24:02,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:24:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:24:02,632 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 22:24:02,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:02,755 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-02 22:24:02,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:24:02,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 15 [2021-11-02 22:24:02,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:02,757 INFO L225 Difference]: With dead ends: 23 [2021-11-02 22:24:02,757 INFO L226 Difference]: Without dead ends: 22 [2021-11-02 22:24:02,758 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:24:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-02 22:24:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-11-02 22:24:02,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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 22:24:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-02 22:24:02,777 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-11-02 22:24:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:02,778 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-02 22:24:02,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 22:24:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-02 22:24:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:24:02,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:02,780 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-02 22:24:02,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:02,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-02 22:24:02,997 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:02,997 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 2 times [2021-11-02 22:24:02,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:02,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622624934] [2021-11-02 22:24:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:02,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:03,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:03,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:03,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622624934] [2021-11-02 22:24:03,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622624934] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:03,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095267374] [2021-11-02 22:24:03,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:03,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:03,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:03,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:03,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:24:03,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:24:03,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:03,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:24:03,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:03,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095267374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:03,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:03,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-02 22:24:03,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519267055] [2021-11-02 22:24:03,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:24:03,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:24:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:24:03,288 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:03,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:03,338 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-02 22:24:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:24:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-02 22:24:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:03,340 INFO L225 Difference]: With dead ends: 25 [2021-11-02 22:24:03,340 INFO L226 Difference]: Without dead ends: 24 [2021-11-02 22:24:03,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:24:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-02 22:24:03,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-11-02 22:24:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-02 22:24:03,348 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2021-11-02 22:24:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:03,348 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-02 22:24:03,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-02 22:24:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:24:03,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:03,350 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-11-02 22:24:03,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:03,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-02 22:24:03,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1936471309, now seen corresponding path program 3 times [2021-11-02 22:24:03,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:03,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725267623] [2021-11-02 22:24:03,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:03,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:03,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:03,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725267623] [2021-11-02 22:24:03,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725267623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:03,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834719500] [2021-11-02 22:24:03,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:24:03,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:03,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:03,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:24:03,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:24:03,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:03,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:24:03,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:03,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834719500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:03,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:03,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-02 22:24:03,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078469956] [2021-11-02 22:24:03,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:24:03,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:24:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:24:03,880 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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 22:24:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:03,935 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-11-02 22:24:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:24:03,936 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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 22:24:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:03,936 INFO L225 Difference]: With dead ends: 30 [2021-11-02 22:24:03,937 INFO L226 Difference]: Without dead ends: 29 [2021-11-02 22:24:03,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:24:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-02 22:24:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-11-02 22:24:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-11-02 22:24:03,942 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2021-11-02 22:24:03,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:03,942 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-11-02 22:24:03,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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 22:24:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-11-02 22:24:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:24:03,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:03,944 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-11-02 22:24:03,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:04,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:04,164 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:04,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:04,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 4 times [2021-11-02 22:24:04,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:04,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810851330] [2021-11-02 22:24:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:04,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:04,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:04,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810851330] [2021-11-02 22:24:04,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810851330] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:04,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419204131] [2021-11-02 22:24:04,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:24:04,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:04,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:04,318 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:04,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:24:04,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:24:04,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:04,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:24:04,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:04,533 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:04,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419204131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:04,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:04,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-02 22:24:04,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458234173] [2021-11-02 22:24:04,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:24:04,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:24:04,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:24:04,536 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:04,637 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-11-02 22:24:04,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:24:04,638 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-02 22:24:04,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:04,639 INFO L225 Difference]: With dead ends: 35 [2021-11-02 22:24:04,639 INFO L226 Difference]: Without dead ends: 34 [2021-11-02 22:24:04,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:24:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-02 22:24:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-11-02 22:24:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 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 22:24:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-11-02 22:24:04,650 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 27 [2021-11-02 22:24:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:04,654 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-11-02 22:24:04,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-11-02 22:24:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-02 22:24:04,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:04,656 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2021-11-02 22:24:04,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-02 22:24:04,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:24:04,882 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:04,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1371102067, now seen corresponding path program 5 times [2021-11-02 22:24:04,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:04,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565512944] [2021-11-02 22:24:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:04,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:05,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:05,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565512944] [2021-11-02 22:24:05,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565512944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:05,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763515267] [2021-11-02 22:24:05,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:24:05,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:05,052 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:05,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:24:05,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:24:05,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:05,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:24:05,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:05,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763515267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:05,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:05,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-11-02 22:24:05,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465208837] [2021-11-02 22:24:05,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:24:05,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:05,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:24:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:24:05,288 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 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 22:24:05,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:05,401 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-11-02 22:24:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-02 22:24:05,402 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-02 22:24:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:05,403 INFO L225 Difference]: With dead ends: 40 [2021-11-02 22:24:05,403 INFO L226 Difference]: Without dead ends: 39 [2021-11-02 22:24:05,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:24:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-02 22:24:05,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-11-02 22:24:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 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 22:24:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-11-02 22:24:05,419 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 32 [2021-11-02 22:24:05,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:05,419 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-11-02 22:24:05,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 14 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 22:24:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-11-02 22:24:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 22:24:05,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:05,424 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-11-02 22:24:05,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:05,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:05,652 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:05,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash -365728473, now seen corresponding path program 6 times [2021-11-02 22:24:05,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:05,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830272071] [2021-11-02 22:24:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:05,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:05,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:05,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830272071] [2021-11-02 22:24:05,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830272071] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:05,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239493512] [2021-11-02 22:24:05,868 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:24:05,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:05,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:05,870 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:05,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:24:06,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 22:24:06,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:06,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:24:06,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:06,147 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:06,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239493512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:06,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:06,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-11-02 22:24:06,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563019382] [2021-11-02 22:24:06,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:24:06,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:06,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:24:06,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:24:06,151 INFO L87 Difference]: Start difference. First operand 38 states and 38 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 22:24:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:06,268 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-11-02 22:24:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:24:06,269 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 37 [2021-11-02 22:24:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:06,269 INFO L225 Difference]: With dead ends: 45 [2021-11-02 22:24:06,270 INFO L226 Difference]: Without dead ends: 44 [2021-11-02 22:24:06,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:24:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-02 22:24:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-11-02 22:24:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 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 22:24:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-11-02 22:24:06,275 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 37 [2021-11-02 22:24:06,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:06,275 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-11-02 22:24:06,276 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 22:24:06,276 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-11-02 22:24:06,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-02 22:24:06,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:06,277 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1] [2021-11-02 22:24:06,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:06,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:24:06,501 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:06,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:06,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1014739981, now seen corresponding path program 7 times [2021-11-02 22:24:06,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:06,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322412672] [2021-11-02 22:24:06,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:06,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:06,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:06,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322412672] [2021-11-02 22:24:06,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322412672] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:06,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588085926] [2021-11-02 22:24:06,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:24:06,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:06,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:06,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:06,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:24:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:06,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:24:06,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:07,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588085926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:07,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:07,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-11-02 22:24:07,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481663872] [2021-11-02 22:24:07,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:24:07,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:24:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:24:07,058 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:07,201 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-11-02 22:24:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:24:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-02 22:24:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:07,203 INFO L225 Difference]: With dead ends: 50 [2021-11-02 22:24:07,203 INFO L226 Difference]: Without dead ends: 49 [2021-11-02 22:24:07,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:24:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-02 22:24:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-11-02 22:24:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 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 22:24:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-11-02 22:24:07,209 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 42 [2021-11-02 22:24:07,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:07,210 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-11-02 22:24:07,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-11-02 22:24:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 22:24:07,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:07,212 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1] [2021-11-02 22:24:07,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:07,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:07,436 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:07,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:07,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1814744231, now seen corresponding path program 8 times [2021-11-02 22:24:07,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:07,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596231357] [2021-11-02 22:24:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:07,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:07,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:07,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596231357] [2021-11-02 22:24:07,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596231357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:07,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869431013] [2021-11-02 22:24:07,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:07,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:07,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:07,678 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:07,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:24:07,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:24:07,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:07,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:24:07,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:08,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869431013] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:08,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:08,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-11-02 22:24:08,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297206390] [2021-11-02 22:24:08,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:24:08,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:24:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:24:08,048 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:08,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:08,199 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-11-02 22:24:08,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-02 22:24:08,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-02 22:24:08,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:08,201 INFO L225 Difference]: With dead ends: 55 [2021-11-02 22:24:08,201 INFO L226 Difference]: Without dead ends: 54 [2021-11-02 22:24:08,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2021-11-02 22:24:08,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-02 22:24:08,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-11-02 22:24:08,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 52 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-11-02 22:24:08,207 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 47 [2021-11-02 22:24:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:08,208 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-11-02 22:24:08,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.473684210526316) internal successors, (47), 20 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:08,208 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-11-02 22:24:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:24:08,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:08,209 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1] [2021-11-02 22:24:08,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:08,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:24:08,436 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:08,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:08,436 INFO L85 PathProgramCache]: Analyzing trace with hash -625173389, now seen corresponding path program 9 times [2021-11-02 22:24:08,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:08,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045128835] [2021-11-02 22:24:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:08,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:08,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:08,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045128835] [2021-11-02 22:24:08,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045128835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:08,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106954874] [2021-11-02 22:24:08,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:24:08,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:08,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:08,728 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:08,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:24:08,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:24:08,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:08,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:24:08,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:09,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106954874] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:09,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:09,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-11-02 22:24:09,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009326634] [2021-11-02 22:24:09,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:24:09,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:24:09,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:24:09,069 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:09,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:09,253 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-11-02 22:24:09,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-02 22:24:09,254 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-02 22:24:09,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:09,255 INFO L225 Difference]: With dead ends: 60 [2021-11-02 22:24:09,255 INFO L226 Difference]: Without dead ends: 59 [2021-11-02 22:24:09,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:24:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-02 22:24:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-02 22:24:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-02 22:24:09,262 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 52 [2021-11-02 22:24:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:09,263 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-02 22:24:09,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-02 22:24:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:24:09,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:09,264 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-11-02 22:24:09,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:09,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-02 22:24:09,484 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:09,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 10 times [2021-11-02 22:24:09,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:09,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708219932] [2021-11-02 22:24:09,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:09,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:09,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:09,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708219932] [2021-11-02 22:24:09,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708219932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:09,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619079385] [2021-11-02 22:24:09,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:24:09,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:09,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:09,797 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:09,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:24:09,977 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:24:09,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:09,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 22:24:09,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:10,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619079385] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:10,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:10,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-11-02 22:24:10,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491736283] [2021-11-02 22:24:10,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:24:10,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:24:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:24:10,192 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 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 22:24:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:10,391 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-11-02 22:24:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:24:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-02 22:24:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:10,393 INFO L225 Difference]: With dead ends: 65 [2021-11-02 22:24:10,393 INFO L226 Difference]: Without dead ends: 64 [2021-11-02 22:24:10,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 22:24:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-02 22:24:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-11-02 22:24:10,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-11-02 22:24:10,400 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 57 [2021-11-02 22:24:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:10,401 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-11-02 22:24:10,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 24 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 22:24:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-11-02 22:24:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:24:10,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:10,402 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1] [2021-11-02 22:24:10,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:10,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:24:10,616 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash 908741875, now seen corresponding path program 11 times [2021-11-02 22:24:10,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:10,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571715440] [2021-11-02 22:24:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:10,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:10,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:10,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571715440] [2021-11-02 22:24:10,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571715440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:10,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301929929] [2021-11-02 22:24:10,949 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:24:10,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:10,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:10,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:24:11,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 22:24:11,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:11,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:24:11,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:11,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301929929] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:11,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:11,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-11-02 22:24:11,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706242716] [2021-11-02 22:24:11,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:24:11,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:11,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:24:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:24:11,439 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 26 states, 25 states have (on average 2.48) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:11,679 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-11-02 22:24:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:24:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 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 22:24:11,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:11,680 INFO L225 Difference]: With dead ends: 70 [2021-11-02 22:24:11,680 INFO L226 Difference]: Without dead ends: 69 [2021-11-02 22:24:11,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:24:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-02 22:24:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-02 22:24:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-11-02 22:24:11,689 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 62 [2021-11-02 22:24:11,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:11,689 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-11-02 22:24:11,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.48) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-11-02 22:24:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:24:11,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:11,691 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1] [2021-11-02 22:24:11,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:11,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 22:24:11,912 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1713204135, now seen corresponding path program 12 times [2021-11-02 22:24:11,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:11,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189998657] [2021-11-02 22:24:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:11,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:12,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:12,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189998657] [2021-11-02 22:24:12,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189998657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:12,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310702102] [2021-11-02 22:24:12,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:24:12,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:12,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:12,267 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:12,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:24:12,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 22:24:12,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:12,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 22:24:12,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:12,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310702102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:12,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:12,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-11-02 22:24:12,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130249119] [2021-11-02 22:24:12,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:24:12,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:24:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:24:12,731 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:12,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:12,973 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-11-02 22:24:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-02 22:24:12,974 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-02 22:24:12,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:12,976 INFO L225 Difference]: With dead ends: 75 [2021-11-02 22:24:12,976 INFO L226 Difference]: Without dead ends: 74 [2021-11-02 22:24:12,977 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:24:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-02 22:24:12,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-11-02 22:24:12,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 72 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 22:24:12,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-11-02 22:24:12,983 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 67 [2021-11-02 22:24:12,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:12,985 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-11-02 22:24:12,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 28 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:12,986 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-11-02 22:24:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:24:12,987 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:12,987 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1] [2021-11-02 22:24:13,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:13,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:24:13,216 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1701487245, now seen corresponding path program 13 times [2021-11-02 22:24:13,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:13,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232028304] [2021-11-02 22:24:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:13,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:13,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:13,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232028304] [2021-11-02 22:24:13,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232028304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:13,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803539313] [2021-11-02 22:24:13,635 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:24:13,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:13,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:13,637 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:13,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:24:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:13,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 22:24:13,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:14,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803539313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:14,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:14,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-11-02 22:24:14,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341757364] [2021-11-02 22:24:14,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-02 22:24:14,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:14,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-02 22:24:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:24:14,194 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:14,456 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-11-02 22:24:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:24:14,456 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-02 22:24:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:14,457 INFO L225 Difference]: With dead ends: 80 [2021-11-02 22:24:14,457 INFO L226 Difference]: Without dead ends: 79 [2021-11-02 22:24:14,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:24:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-02 22:24:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-11-02 22:24:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0129870129870129) internal successors, (78), 77 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-11-02 22:24:14,463 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 72 [2021-11-02 22:24:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:14,464 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-11-02 22:24:14,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 30 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-11-02 22:24:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:24:14,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:14,465 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-11-02 22:24:14,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:14,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:14,676 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash 881371943, now seen corresponding path program 14 times [2021-11-02 22:24:14,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:14,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373698796] [2021-11-02 22:24:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:14,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:15,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:15,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373698796] [2021-11-02 22:24:15,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373698796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:15,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978515664] [2021-11-02 22:24:15,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:15,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:15,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:15,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:15,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:24:15,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:24:15,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:15,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-02 22:24:15,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:15,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978515664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:15,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:15,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-11-02 22:24:15,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538875412] [2021-11-02 22:24:15,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:24:15,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:15,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:24:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:24:15,653 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 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 22:24:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:15,912 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-11-02 22:24:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-02 22:24:15,912 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 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 77 [2021-11-02 22:24:15,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:15,913 INFO L225 Difference]: With dead ends: 85 [2021-11-02 22:24:15,913 INFO L226 Difference]: Without dead ends: 84 [2021-11-02 22:24:15,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 22:24:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-02 22:24:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2021-11-02 22:24:15,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 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 22:24:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2021-11-02 22:24:15,919 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 77 [2021-11-02 22:24:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:15,920 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2021-11-02 22:24:15,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 32 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 22:24:15,920 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2021-11-02 22:24:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:24:15,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:15,922 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1] [2021-11-02 22:24:15,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:16,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:16,132 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1925565939, now seen corresponding path program 15 times [2021-11-02 22:24:16,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:16,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082489440] [2021-11-02 22:24:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:16,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:16,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:16,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082489440] [2021-11-02 22:24:16,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082489440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:16,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909244964] [2021-11-02 22:24:16,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:24:16,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:16,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:16,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:24:16,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 22:24:16,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:16,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:24:16,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:17,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909244964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:17,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-11-02 22:24:17,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244570295] [2021-11-02 22:24:17,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:24:17,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:24:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:24:17,145 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 34 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:17,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:17,437 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2021-11-02 22:24:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-02 22:24:17,438 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 34 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-02 22:24:17,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:17,439 INFO L225 Difference]: With dead ends: 90 [2021-11-02 22:24:17,439 INFO L226 Difference]: Without dead ends: 89 [2021-11-02 22:24:17,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 22:24:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-02 22:24:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-11-02 22:24:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0114942528735633) internal successors, (88), 87 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2021-11-02 22:24:17,444 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 82 [2021-11-02 22:24:17,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:17,445 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2021-11-02 22:24:17,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.484848484848485) internal successors, (82), 34 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2021-11-02 22:24:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:24:17,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:17,446 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1] [2021-11-02 22:24:17,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:17,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:17,652 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:17,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash -209024345, now seen corresponding path program 16 times [2021-11-02 22:24:17,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:17,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508339543] [2021-11-02 22:24:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:17,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:18,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:18,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508339543] [2021-11-02 22:24:18,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508339543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:18,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108296599] [2021-11-02 22:24:18,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:24:18,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:18,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:18,135 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:18,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:24:18,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:24:18,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:18,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:24:18,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:18,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108296599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:18,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:18,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-11-02 22:24:18,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333130932] [2021-11-02 22:24:18,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:24:18,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:24:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:24:18,732 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:19,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:19,031 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-11-02 22:24:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-02 22:24:19,033 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 22:24:19,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:19,035 INFO L225 Difference]: With dead ends: 95 [2021-11-02 22:24:19,035 INFO L226 Difference]: Without dead ends: 94 [2021-11-02 22:24:19,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 22:24:19,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-02 22:24:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-11-02 22:24:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 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 22:24:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2021-11-02 22:24:19,040 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 87 [2021-11-02 22:24:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:19,041 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2021-11-02 22:24:19,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4857142857142858) internal successors, (87), 36 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2021-11-02 22:24:19,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:24:19,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:19,042 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1] [2021-11-02 22:24:19,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:19,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 22:24:19,256 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:19,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1334025843, now seen corresponding path program 17 times [2021-11-02 22:24:19,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:19,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558930483] [2021-11-02 22:24:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:19,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:19,750 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 22:24:19,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:19,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558930483] [2021-11-02 22:24:19,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558930483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:19,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233039370] [2021-11-02 22:24:19,752 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:24:19,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:19,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:19,758 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:19,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:24:20,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 22:24:20,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:20,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-02 22:24:20,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:20,404 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 22:24:20,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233039370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:20,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:20,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-11-02 22:24:20,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361325814] [2021-11-02 22:24:20,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-02 22:24:20,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:20,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-02 22:24:20,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:24:20,411 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 38 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:20,779 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2021-11-02 22:24:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-02 22:24:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 38 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-02 22:24:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:20,780 INFO L225 Difference]: With dead ends: 100 [2021-11-02 22:24:20,781 INFO L226 Difference]: Without dead ends: 99 [2021-11-02 22:24:20,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 22:24:20,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-02 22:24:20,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-11-02 22:24:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0103092783505154) internal successors, (98), 97 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 22:24:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-11-02 22:24:20,790 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 92 [2021-11-02 22:24:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:20,791 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-11-02 22:24:20,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4864864864864864) internal successors, (92), 38 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-11-02 22:24:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 22:24:20,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:20,794 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1] [2021-11-02 22:24:20,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:21,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:21,013 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1331366439, now seen corresponding path program 18 times [2021-11-02 22:24:21,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:21,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449232677] [2021-11-02 22:24:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:21,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:21,574 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:21,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:21,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449232677] [2021-11-02 22:24:21,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449232677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:21,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206848067] [2021-11-02 22:24:21,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:24:21,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:21,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:21,580 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:21,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:24:21,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 22:24:21,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:21,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-02 22:24:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:22,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206848067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:22,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:22,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-11-02 22:24:22,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009158326] [2021-11-02 22:24:22,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:24:22,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:22,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:24:22,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:24:22,263 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 40 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 22:24:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:22,671 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2021-11-02 22:24:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-02 22:24:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 40 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 97 [2021-11-02 22:24:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:22,673 INFO L225 Difference]: With dead ends: 105 [2021-11-02 22:24:22,674 INFO L226 Difference]: Without dead ends: 104 [2021-11-02 22:24:22,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 22:24:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-02 22:24:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2021-11-02 22:24:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0098039215686274) internal successors, (103), 102 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 22:24:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2021-11-02 22:24:22,681 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 97 [2021-11-02 22:24:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:22,682 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2021-11-02 22:24:22,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.4871794871794872) internal successors, (97), 40 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 22:24:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2021-11-02 22:24:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-02 22:24:22,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:22,687 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1] [2021-11-02 22:24:22,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:22,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-02 22:24:22,900 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:22,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1737936627, now seen corresponding path program 19 times [2021-11-02 22:24:22,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:22,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466532519] [2021-11-02 22:24:22,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:22,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:23,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:23,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466532519] [2021-11-02 22:24:23,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466532519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:23,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337326462] [2021-11-02 22:24:23,536 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:24:23,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:23,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:23,544 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:23,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:24:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:23,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-02 22:24:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:24,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337326462] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:24,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:24,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-11-02 22:24:24,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082890870] [2021-11-02 22:24:24,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:24:24,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:24,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:24:24,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:24:24,284 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:24,688 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2021-11-02 22:24:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 22:24:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-02 22:24:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:24,689 INFO L225 Difference]: With dead ends: 110 [2021-11-02 22:24:24,690 INFO L226 Difference]: Without dead ends: 109 [2021-11-02 22:24:24,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2021-11-02 22:24:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-02 22:24:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2021-11-02 22:24:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0093457943925233) internal successors, (108), 107 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2021-11-02 22:24:24,696 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 102 [2021-11-02 22:24:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:24,697 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2021-11-02 22:24:24,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 42 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2021-11-02 22:24:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:24:24,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:24,711 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1] [2021-11-02 22:24:24,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:24,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 22:24:24,912 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 238168487, now seen corresponding path program 20 times [2021-11-02 22:24:24,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:24,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178226054] [2021-11-02 22:24:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:24,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:25,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:25,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178226054] [2021-11-02 22:24:25,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178226054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:25,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104928385] [2021-11-02 22:24:25,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:25,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:25,740 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:25,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:24:26,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:24:26,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:26,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-02 22:24:26,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:26,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104928385] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:26,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:26,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-11-02 22:24:26,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147625930] [2021-11-02 22:24:26,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:24:26,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:26,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:24:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:24:26,710 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:27,111 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2021-11-02 22:24:27,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-02 22:24:27,111 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 states have internal predecessors, (107), 0 states have call successors, (0), 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 22:24:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:27,112 INFO L225 Difference]: With dead ends: 115 [2021-11-02 22:24:27,112 INFO L226 Difference]: Without dead ends: 114 [2021-11-02 22:24:27,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2021-11-02 22:24:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-02 22:24:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2021-11-02 22:24:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0089285714285714) internal successors, (113), 112 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2021-11-02 22:24:27,118 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 107 [2021-11-02 22:24:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:27,119 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2021-11-02 22:24:27,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.488372093023256) internal successors, (107), 44 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2021-11-02 22:24:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-02 22:24:27,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:27,120 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1] [2021-11-02 22:24:27,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-02 22:24:27,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 22:24:27,332 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 398942067, now seen corresponding path program 21 times [2021-11-02 22:24:27,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:27,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099782165] [2021-11-02 22:24:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:27,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:28,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:28,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099782165] [2021-11-02 22:24:28,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099782165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:28,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991610210] [2021-11-02 22:24:28,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:24:28,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:28,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:28,102 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:28,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:24:28,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 22:24:28,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:28,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-02 22:24:28,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:28,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:28,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991610210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:28,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:28,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-11-02 22:24:28,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56444183] [2021-11-02 22:24:28,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-02 22:24:28,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-02 22:24:28,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 22:24:28,947 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:29,358 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-11-02 22:24:29,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-02 22:24:29,358 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-02 22:24:29,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:29,359 INFO L225 Difference]: With dead ends: 120 [2021-11-02 22:24:29,359 INFO L226 Difference]: Without dead ends: 119 [2021-11-02 22:24:29,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 22:24:29,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-02 22:24:29,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2021-11-02 22:24:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0085470085470085) internal successors, (118), 117 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2021-11-02 22:24:29,366 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 112 [2021-11-02 22:24:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:29,367 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2021-11-02 22:24:29,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.488888888888889) internal successors, (112), 46 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2021-11-02 22:24:29,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-02 22:24:29,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:29,368 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-11-02 22:24:29,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-02 22:24:29,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 22:24:29,568 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:29,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 22 times [2021-11-02 22:24:29,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:29,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550375384] [2021-11-02 22:24:29,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:29,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:30,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:30,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550375384] [2021-11-02 22:24:30,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550375384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:30,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210950784] [2021-11-02 22:24:30,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:24:30,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:30,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:30,416 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:30,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 22:24:30,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:24:30,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:30,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-02 22:24:30,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:31,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210950784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:31,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:31,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-11-02 22:24:31,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663415277] [2021-11-02 22:24:31,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-02 22:24:31,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-02 22:24:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 22:24:31,334 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 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 22:24:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:31,809 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2021-11-02 22:24:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 22:24:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 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 117 [2021-11-02 22:24:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:31,810 INFO L225 Difference]: With dead ends: 125 [2021-11-02 22:24:31,810 INFO L226 Difference]: Without dead ends: 124 [2021-11-02 22:24:31,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2021-11-02 22:24:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-02 22:24:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2021-11-02 22:24:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0081967213114753) internal successors, (123), 122 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 22:24:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2021-11-02 22:24:31,816 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 117 [2021-11-02 22:24:31,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:31,817 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2021-11-02 22:24:31,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 48 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 22:24:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2021-11-02 22:24:31,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 22:24:31,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:31,819 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1] [2021-11-02 22:24:31,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-02 22:24:32,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-02 22:24:32,032 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:32,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:32,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1658671091, now seen corresponding path program 23 times [2021-11-02 22:24:32,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:32,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133959140] [2021-11-02 22:24:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:32,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:32,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:32,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133959140] [2021-11-02 22:24:32,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133959140] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:32,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470018991] [2021-11-02 22:24:32,778 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:24:32,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:32,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:32,778 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:32,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:24:33,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-02 22:24:33,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-02 22:24:33,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:33,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470018991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:33,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:33,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-11-02 22:24:33,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602175060] [2021-11-02 22:24:33,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-02 22:24:33,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-02 22:24:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-02 22:24:33,684 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:34,175 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2021-11-02 22:24:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-02 22:24:34,176 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-02 22:24:34,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:34,177 INFO L225 Difference]: With dead ends: 130 [2021-11-02 22:24:34,177 INFO L226 Difference]: Without dead ends: 129 [2021-11-02 22:24:34,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 22:24:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-02 22:24:34,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-11-02 22:24:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.0078740157480315) internal successors, (128), 127 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2021-11-02 22:24:34,183 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 122 [2021-11-02 22:24:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:34,183 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2021-11-02 22:24:34,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.489795918367347) internal successors, (122), 50 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2021-11-02 22:24:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-02 22:24:34,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:34,185 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1] [2021-11-02 22:24:34,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:34,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 22:24:34,412 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1339312295, now seen corresponding path program 24 times [2021-11-02 22:24:34,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:34,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55622051] [2021-11-02 22:24:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:34,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:35,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:35,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55622051] [2021-11-02 22:24:35,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55622051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:35,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983736358] [2021-11-02 22:24:35,227 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:24:35,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:35,228 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:35,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:24:35,797 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-02 22:24:35,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:35,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-02 22:24:35,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:36,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983736358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:36,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:36,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-11-02 22:24:36,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977604402] [2021-11-02 22:24:36,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-02 22:24:36,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-02 22:24:36,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 22:24:36,219 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand has 52 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:36,730 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2021-11-02 22:24:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-02 22:24:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-02 22:24:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:36,731 INFO L225 Difference]: With dead ends: 135 [2021-11-02 22:24:36,731 INFO L226 Difference]: Without dead ends: 134 [2021-11-02 22:24:36,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 22:24:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-02 22:24:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2021-11-02 22:24:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0075757575757576) internal successors, (133), 132 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:36,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2021-11-02 22:24:36,738 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 127 [2021-11-02 22:24:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:36,738 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2021-11-02 22:24:36,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.4901960784313726) internal successors, (127), 52 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:36,739 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2021-11-02 22:24:36,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-02 22:24:36,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:36,740 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1] [2021-11-02 22:24:36,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-11-02 22:24:36,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:36,950 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:36,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:36,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1906352243, now seen corresponding path program 25 times [2021-11-02 22:24:36,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:36,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894707605] [2021-11-02 22:24:36,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:36,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:37,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:37,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894707605] [2021-11-02 22:24:37,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894707605] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:37,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762149760] [2021-11-02 22:24:37,819 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:24:37,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:37,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:37,820 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:37,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 22:24:38,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:38,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-02 22:24:38,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:38,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762149760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:38,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:38,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-11-02 22:24:38,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942290887] [2021-11-02 22:24:38,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-02 22:24:38,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:38,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-02 22:24:38,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 22:24:38,832 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 54 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:39,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:39,418 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2021-11-02 22:24:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-02 22:24:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 54 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-02 22:24:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:39,420 INFO L225 Difference]: With dead ends: 140 [2021-11-02 22:24:39,420 INFO L226 Difference]: Without dead ends: 139 [2021-11-02 22:24:39,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2021-11-02 22:24:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-02 22:24:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-11-02 22:24:39,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0072992700729928) internal successors, (138), 137 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2021-11-02 22:24:39,426 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 132 [2021-11-02 22:24:39,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:39,427 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2021-11-02 22:24:39,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.490566037735849) internal successors, (132), 54 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:39,427 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2021-11-02 22:24:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 22:24:39,429 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:39,429 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1] [2021-11-02 22:24:39,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:39,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-02 22:24:39,656 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:39,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1628391463, now seen corresponding path program 26 times [2021-11-02 22:24:39,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:39,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33947959] [2021-11-02 22:24:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:39,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:40,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:40,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33947959] [2021-11-02 22:24:40,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33947959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:40,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099618155] [2021-11-02 22:24:40,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:24:40,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:40,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:40,620 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 22:24:41,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:24:41,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:41,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-02 22:24:41,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:41,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099618155] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:41,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:41,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-11-02 22:24:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701948220] [2021-11-02 22:24:41,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-02 22:24:41,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:41,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-02 22:24:41,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2021-11-02 22:24:41,679 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 56 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 56 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 22:24:42,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:42,238 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2021-11-02 22:24:42,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-02 22:24:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 56 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 137 [2021-11-02 22:24:42,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:42,239 INFO L225 Difference]: With dead ends: 145 [2021-11-02 22:24:42,239 INFO L226 Difference]: Without dead ends: 144 [2021-11-02 22:24:42,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2021-11-02 22:24:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-02 22:24:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2021-11-02 22:24:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.0070422535211268) internal successors, (143), 142 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 22:24:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2021-11-02 22:24:42,246 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 137 [2021-11-02 22:24:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:42,247 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2021-11-02 22:24:42,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4909090909090907) internal successors, (137), 56 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 22:24:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2021-11-02 22:24:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-02 22:24:42,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:42,248 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1] [2021-11-02 22:24:42,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-11-02 22:24:42,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-02 22:24:42,456 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash 316231923, now seen corresponding path program 27 times [2021-11-02 22:24:42,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:42,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141456106] [2021-11-02 22:24:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:42,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:43,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:43,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141456106] [2021-11-02 22:24:43,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141456106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:43,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532726739] [2021-11-02 22:24:43,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:24:43,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:43,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:43,532 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:43,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 22:24:44,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-02 22:24:44,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:44,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-02 22:24:44,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:44,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532726739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:44,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:44,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-11-02 22:24:44,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721230102] [2021-11-02 22:24:44,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-02 22:24:44,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-02 22:24:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 22:24:44,621 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 58 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 22:24:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:45,207 INFO L93 Difference]: Finished difference Result 150 states and 150 transitions. [2021-11-02 22:24:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-02 22:24:45,207 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 58 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) Word has length 142 [2021-11-02 22:24:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:45,208 INFO L225 Difference]: With dead ends: 150 [2021-11-02 22:24:45,208 INFO L226 Difference]: Without dead ends: 149 [2021-11-02 22:24:45,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2021-11-02 22:24:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-02 22:24:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2021-11-02 22:24:45,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0068027210884354) internal successors, (148), 147 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 22:24:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-11-02 22:24:45,216 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 142 [2021-11-02 22:24:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:45,216 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-11-02 22:24:45,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.491228070175439) internal successors, (142), 58 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 22:24:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-11-02 22:24:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-02 22:24:45,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:45,218 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1] [2021-11-02 22:24:45,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-02 22:24:45,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-02 22:24:45,418 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:45,418 INFO L85 PathProgramCache]: Analyzing trace with hash -231675993, now seen corresponding path program 28 times [2021-11-02 22:24:45,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:45,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093998173] [2021-11-02 22:24:45,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:45,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:46,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:46,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093998173] [2021-11-02 22:24:46,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093998173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:46,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513284487] [2021-11-02 22:24:46,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:24:46,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:46,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:46,631 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:46,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 22:24:47,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:24:47,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:47,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-02 22:24:47,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:47,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513284487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:47,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:47,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-11-02 22:24:47,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561982983] [2021-11-02 22:24:47,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-02 22:24:47,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-02 22:24:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-11-02 22:24:47,810 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 60 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 22:24:48,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:48,518 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2021-11-02 22:24:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-02 22:24:48,518 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 60 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) Word has length 147 [2021-11-02 22:24:48,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:48,519 INFO L225 Difference]: With dead ends: 155 [2021-11-02 22:24:48,519 INFO L226 Difference]: Without dead ends: 154 [2021-11-02 22:24:48,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2021-11-02 22:24:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-02 22:24:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-11-02 22:24:48,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.006578947368421) internal successors, (153), 152 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2021-11-02 22:24:48,536 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 147 [2021-11-02 22:24:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:48,536 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2021-11-02 22:24:48,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.4915254237288136) internal successors, (147), 60 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 22:24:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2021-11-02 22:24:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-02 22:24:48,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:48,538 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1] [2021-11-02 22:24:48,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:48,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-02 22:24:48,756 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:48,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash 995058035, now seen corresponding path program 29 times [2021-11-02 22:24:48,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:48,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772014212] [2021-11-02 22:24:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:48,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:49,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:49,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772014212] [2021-11-02 22:24:49,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772014212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:49,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461304088] [2021-11-02 22:24:49,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:24:49,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:49,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:49,849 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:49,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:24:50,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-02 22:24:50,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:50,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-02 22:24:50,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:51,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461304088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:51,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-11-02 22:24:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184200991] [2021-11-02 22:24:51,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-02 22:24:51,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-02 22:24:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-02 22:24:51,082 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:51,779 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2021-11-02 22:24:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-02 22:24:51,780 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-02 22:24:51,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:51,781 INFO L225 Difference]: With dead ends: 160 [2021-11-02 22:24:51,781 INFO L226 Difference]: Without dead ends: 159 [2021-11-02 22:24:51,782 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2021-11-02 22:24:51,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-02 22:24:51,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2021-11-02 22:24:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.0063694267515924) internal successors, (158), 157 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-11-02 22:24:51,788 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 152 [2021-11-02 22:24:51,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:51,788 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-11-02 22:24:51,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.4918032786885247) internal successors, (152), 62 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:51,789 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-11-02 22:24:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-02 22:24:51,790 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:51,790 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1] [2021-11-02 22:24:51,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:52,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:24:52,012 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:52,012 INFO L85 PathProgramCache]: Analyzing trace with hash -881776857, now seen corresponding path program 30 times [2021-11-02 22:24:52,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:52,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059436760] [2021-11-02 22:24:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:52,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:53,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:53,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059436760] [2021-11-02 22:24:53,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059436760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:53,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956246948] [2021-11-02 22:24:53,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:24:53,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:53,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:53,217 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:53,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 22:24:54,078 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-02 22:24:54,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:24:54,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-02 22:24:54,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:54,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956246948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:54,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:54,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-11-02 22:24:54,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104629357] [2021-11-02 22:24:54,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-02 22:24:54,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-02 22:24:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 22:24:54,543 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 64 states, 63 states have (on average 2.492063492063492) internal successors, (157), 64 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 22:24:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:55,421 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2021-11-02 22:24:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-02 22:24:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.492063492063492) internal successors, (157), 64 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 157 [2021-11-02 22:24:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:55,424 INFO L225 Difference]: With dead ends: 165 [2021-11-02 22:24:55,424 INFO L226 Difference]: Without dead ends: 164 [2021-11-02 22:24:55,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2574, Invalid=6356, Unknown=0, NotChecked=0, Total=8930 [2021-11-02 22:24:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-02 22:24:55,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2021-11-02 22:24:55,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 162 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2021-11-02 22:24:55,437 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 157 [2021-11-02 22:24:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:55,438 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2021-11-02 22:24:55,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.492063492063492) internal successors, (157), 64 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 22:24:55,439 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2021-11-02 22:24:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-02 22:24:55,443 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:55,443 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1] [2021-11-02 22:24:55,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-11-02 22:24:55,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:55,656 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:55,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:55,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2050305549, now seen corresponding path program 31 times [2021-11-02 22:24:55,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:55,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782647364] [2021-11-02 22:24:55,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:55,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:57,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:24:57,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782647364] [2021-11-02 22:24:57,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782647364] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:57,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463610641] [2021-11-02 22:24:57,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:24:57,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:24:57,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:24:57,030 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:24:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 22:24:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:24:57,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-02 22:24:57,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:24:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:24:58,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463610641] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:24:58,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:24:58,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-11-02 22:24:58,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392336210] [2021-11-02 22:24:58,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:24:58,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:24:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:24:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:24:58,357 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand has 66 states, 65 states have (on average 2.4923076923076923) internal successors, (162), 66 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:59,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:24:59,092 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2021-11-02 22:24:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-02 22:24:59,092 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.4923076923076923) internal successors, (162), 66 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2021-11-02 22:24:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:24:59,093 INFO L225 Difference]: With dead ends: 170 [2021-11-02 22:24:59,094 INFO L226 Difference]: Without dead ends: 169 [2021-11-02 22:24:59,095 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2737, Invalid=6769, Unknown=0, NotChecked=0, Total=9506 [2021-11-02 22:24:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-02 22:24:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2021-11-02 22:24:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0059880239520957) internal successors, (168), 167 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 22:24:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2021-11-02 22:24:59,101 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 162 [2021-11-02 22:24:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:24:59,102 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2021-11-02 22:24:59,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.4923076923076923) internal successors, (162), 66 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:24:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2021-11-02 22:24:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-02 22:24:59,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:24:59,103 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1] [2021-11-02 22:24:59,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-02 22:24:59,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-02 22:24:59,332 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:24:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:24:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -821557593, now seen corresponding path program 32 times [2021-11-02 22:24:59,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:24:59,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810538374] [2021-11-02 22:24:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:24:59,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:24:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:00,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:00,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810538374] [2021-11-02 22:25:00,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810538374] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:00,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130402089] [2021-11-02 22:25:00,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:25:00,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:00,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:00,632 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:00,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 22:25:01,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:25:01,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:01,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-02 22:25:01,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:02,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130402089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:02,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:02,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2021-11-02 22:25:02,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652432415] [2021-11-02 22:25:02,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-02 22:25:02,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-02 22:25:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2021-11-02 22:25:02,008 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand has 68 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 68 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:02,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:02,811 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2021-11-02 22:25:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-02 22:25:02,811 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 68 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-02 22:25:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:02,819 INFO L225 Difference]: With dead ends: 175 [2021-11-02 22:25:02,820 INFO L226 Difference]: Without dead ends: 174 [2021-11-02 22:25:02,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2905, Invalid=7195, Unknown=0, NotChecked=0, Total=10100 [2021-11-02 22:25:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-02 22:25:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2021-11-02 22:25:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.005813953488372) internal successors, (173), 172 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:02,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2021-11-02 22:25:02,827 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 167 [2021-11-02 22:25:02,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:02,828 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2021-11-02 22:25:02,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.4925373134328357) internal successors, (167), 68 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2021-11-02 22:25:02,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-02 22:25:02,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:02,830 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1] [2021-11-02 22:25:02,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-02 22:25:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 22:25:03,032 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:03,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1290558861, now seen corresponding path program 33 times [2021-11-02 22:25:03,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:03,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128550656] [2021-11-02 22:25:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:03,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:04,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:04,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128550656] [2021-11-02 22:25:04,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128550656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:04,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719714110] [2021-11-02 22:25:04,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:25:04,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:04,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:04,402 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:04,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 22:25:05,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-02 22:25:05,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:05,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-02 22:25:05,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:05,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719714110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:05,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:05,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2021-11-02 22:25:05,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957905716] [2021-11-02 22:25:05,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-02 22:25:05,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-02 22:25:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2021-11-02 22:25:05,964 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 70 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:06,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:06,819 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-11-02 22:25:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-02 22:25:06,820 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 70 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-02 22:25:06,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:06,821 INFO L225 Difference]: With dead ends: 180 [2021-11-02 22:25:06,821 INFO L226 Difference]: Without dead ends: 179 [2021-11-02 22:25:06,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3078, Invalid=7634, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 22:25:06,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-02 22:25:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2021-11-02 22:25:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.0056497175141244) internal successors, (178), 177 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-11-02 22:25:06,843 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 172 [2021-11-02 22:25:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:06,843 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-11-02 22:25:06,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.4927536231884058) internal successors, (172), 70 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-11-02 22:25:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-02 22:25:06,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:06,844 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1] [2021-11-02 22:25:06,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-11-02 22:25:07,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-02 22:25:07,045 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2033026599, now seen corresponding path program 34 times [2021-11-02 22:25:07,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:07,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139803239] [2021-11-02 22:25:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:07,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:08,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:08,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:08,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139803239] [2021-11-02 22:25:08,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139803239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:08,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519941688] [2021-11-02 22:25:08,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:25:08,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:08,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:08,496 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:08,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 22:25:09,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:25:09,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:09,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-02 22:25:09,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:09,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519941688] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:09,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:09,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2021-11-02 22:25:09,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017070532] [2021-11-02 22:25:09,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-02 22:25:09,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-02 22:25:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2021-11-02 22:25:09,997 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 72 states, 71 states have (on average 2.492957746478873) internal successors, (177), 72 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 22:25:10,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:10,913 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2021-11-02 22:25:10,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 22:25:10,913 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.492957746478873) internal successors, (177), 72 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 177 [2021-11-02 22:25:10,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:10,915 INFO L225 Difference]: With dead ends: 185 [2021-11-02 22:25:10,915 INFO L226 Difference]: Without dead ends: 184 [2021-11-02 22:25:10,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3256, Invalid=8086, Unknown=0, NotChecked=0, Total=11342 [2021-11-02 22:25:10,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-02 22:25:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2021-11-02 22:25:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.0054945054945055) internal successors, (183), 182 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2021-11-02 22:25:10,925 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 177 [2021-11-02 22:25:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:10,925 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2021-11-02 22:25:10,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.492957746478873) internal successors, (177), 72 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 22:25:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2021-11-02 22:25:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-02 22:25:10,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:10,928 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1] [2021-11-02 22:25:10,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:11,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 22:25:11,136 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:11,136 INFO L85 PathProgramCache]: Analyzing trace with hash 703714035, now seen corresponding path program 35 times [2021-11-02 22:25:11,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:11,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481497033] [2021-11-02 22:25:11,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:11,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:12,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:12,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481497033] [2021-11-02 22:25:12,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481497033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:12,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638339702] [2021-11-02 22:25:12,663 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:25:12,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:12,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:12,664 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:12,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 22:25:13,800 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-02 22:25:13,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:13,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-02 22:25:13,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:14,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638339702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:14,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:14,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2021-11-02 22:25:14,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71959338] [2021-11-02 22:25:14,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-02 22:25:14,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:14,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-02 22:25:14,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2021-11-02 22:25:14,268 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand has 74 states, 73 states have (on average 2.493150684931507) internal successors, (182), 74 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:15,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:15,338 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2021-11-02 22:25:15,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-02 22:25:15,339 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.493150684931507) internal successors, (182), 74 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-11-02 22:25:15,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:15,342 INFO L225 Difference]: With dead ends: 190 [2021-11-02 22:25:15,342 INFO L226 Difference]: Without dead ends: 189 [2021-11-02 22:25:15,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3439, Invalid=8551, Unknown=0, NotChecked=0, Total=11990 [2021-11-02 22:25:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-02 22:25:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 188. [2021-11-02 22:25:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0053475935828877) internal successors, (188), 187 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 188 transitions. [2021-11-02 22:25:15,350 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 188 transitions. Word has length 182 [2021-11-02 22:25:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:15,350 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 188 transitions. [2021-11-02 22:25:15,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.493150684931507) internal successors, (182), 74 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 188 transitions. [2021-11-02 22:25:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-02 22:25:15,352 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:15,352 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1] [2021-11-02 22:25:15,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-02 22:25:15,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:15,579 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:15,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:15,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1612293543, now seen corresponding path program 36 times [2021-11-02 22:25:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:15,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985289119] [2021-11-02 22:25:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:15,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:17,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:17,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985289119] [2021-11-02 22:25:17,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985289119] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:17,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989579664] [2021-11-02 22:25:17,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:25:17,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:17,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:17,172 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:17,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 22:25:18,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-02 22:25:18,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:18,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-02 22:25:18,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:18,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989579664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:18,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:18,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2021-11-02 22:25:18,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629940349] [2021-11-02 22:25:18,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-02 22:25:18,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-02 22:25:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 22:25:18,948 INFO L87 Difference]: Start difference. First operand 188 states and 188 transitions. Second operand has 76 states, 75 states have (on average 2.493333333333333) internal successors, (187), 76 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 22:25:20,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:20,015 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2021-11-02 22:25:20,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-02 22:25:20,016 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.493333333333333) internal successors, (187), 76 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) Word has length 187 [2021-11-02 22:25:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:20,017 INFO L225 Difference]: With dead ends: 195 [2021-11-02 22:25:20,018 INFO L226 Difference]: Without dead ends: 194 [2021-11-02 22:25:20,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3627, Invalid=9029, Unknown=0, NotChecked=0, Total=12656 [2021-11-02 22:25:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-02 22:25:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2021-11-02 22:25:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0052083333333333) internal successors, (193), 192 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 22:25:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2021-11-02 22:25:20,028 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 187 [2021-11-02 22:25:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:20,028 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2021-11-02 22:25:20,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.493333333333333) internal successors, (187), 76 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 22:25:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2021-11-02 22:25:20,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-02 22:25:20,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:20,031 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1] [2021-11-02 22:25:20,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:20,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-02 22:25:20,252 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1999463283, now seen corresponding path program 37 times [2021-11-02 22:25:20,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:20,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959886301] [2021-11-02 22:25:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:20,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:22,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:22,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959886301] [2021-11-02 22:25:22,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959886301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:22,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549729963] [2021-11-02 22:25:22,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:25:22,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:22,190 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:22,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 22:25:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:23,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-02 22:25:23,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:23,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549729963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:23,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:23,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2021-11-02 22:25:23,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148256500] [2021-11-02 22:25:23,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-11-02 22:25:23,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-11-02 22:25:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:25:23,912 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand has 78 states, 77 states have (on average 2.4935064935064934) internal successors, (192), 78 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 22:25:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:24,952 INFO L93 Difference]: Finished difference Result 200 states and 200 transitions. [2021-11-02 22:25:24,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-02 22:25:24,952 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.4935064935064934) internal successors, (192), 78 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) Word has length 192 [2021-11-02 22:25:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:24,954 INFO L225 Difference]: With dead ends: 200 [2021-11-02 22:25:24,954 INFO L226 Difference]: Without dead ends: 199 [2021-11-02 22:25:24,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3820, Invalid=9520, Unknown=0, NotChecked=0, Total=13340 [2021-11-02 22:25:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-02 22:25:24,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2021-11-02 22:25:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.0050761421319796) internal successors, (198), 197 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2021-11-02 22:25:24,962 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 192 [2021-11-02 22:25:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:24,963 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2021-11-02 22:25:24,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.4935064935064934) internal successors, (192), 78 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 22:25:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2021-11-02 22:25:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-02 22:25:24,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:24,965 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1] [2021-11-02 22:25:25,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-02 22:25:25,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:25,185 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:25,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:25,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1274780377, now seen corresponding path program 38 times [2021-11-02 22:25:25,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:25,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735476190] [2021-11-02 22:25:25,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:25,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:27,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:27,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735476190] [2021-11-02 22:25:27,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735476190] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:27,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387415387] [2021-11-02 22:25:27,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:25:27,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:27,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:27,203 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:27,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 22:25:28,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:25:28,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:28,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-02 22:25:28,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:28,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387415387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:28,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:28,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2021-11-02 22:25:28,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051152514] [2021-11-02 22:25:28,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-02 22:25:28,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-02 22:25:28,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2021-11-02 22:25:28,986 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand has 80 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 80 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 22:25:30,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:30,128 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2021-11-02 22:25:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-02 22:25:30,129 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 80 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 197 [2021-11-02 22:25:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:30,130 INFO L225 Difference]: With dead ends: 205 [2021-11-02 22:25:30,130 INFO L226 Difference]: Without dead ends: 204 [2021-11-02 22:25:30,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4018, Invalid=10024, Unknown=0, NotChecked=0, Total=14042 [2021-11-02 22:25:30,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-02 22:25:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2021-11-02 22:25:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.004950495049505) internal successors, (203), 202 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:30,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2021-11-02 22:25:30,137 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 197 [2021-11-02 22:25:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:30,138 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2021-11-02 22:25:30,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 80 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 22:25:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2021-11-02 22:25:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-02 22:25:30,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:30,140 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1] [2021-11-02 22:25:30,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-02 22:25:30,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:30,356 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:30,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:30,357 INFO L85 PathProgramCache]: Analyzing trace with hash -846310413, now seen corresponding path program 39 times [2021-11-02 22:25:30,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:30,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605922889] [2021-11-02 22:25:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:30,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:32,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:32,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605922889] [2021-11-02 22:25:32,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605922889] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:32,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56786185] [2021-11-02 22:25:32,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:25:32,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:32,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:32,290 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:32,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 22:25:33,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-02 22:25:33,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:33,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-02 22:25:33,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:34,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56786185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:34,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:34,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2021-11-02 22:25:34,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555442240] [2021-11-02 22:25:34,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-02 22:25:34,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:34,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-02 22:25:34,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 22:25:34,250 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:35,468 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2021-11-02 22:25:35,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-02 22:25:35,469 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-11-02 22:25:35,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:35,470 INFO L225 Difference]: With dead ends: 210 [2021-11-02 22:25:35,470 INFO L226 Difference]: Without dead ends: 209 [2021-11-02 22:25:35,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4221, Invalid=10541, Unknown=0, NotChecked=0, Total=14762 [2021-11-02 22:25:35,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-02 22:25:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-02 22:25:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0048309178743962) internal successors, (208), 207 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-11-02 22:25:35,479 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 202 [2021-11-02 22:25:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:35,479 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-11-02 22:25:35,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.493827160493827) internal successors, (202), 82 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-11-02 22:25:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-02 22:25:35,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:35,481 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1] [2021-11-02 22:25:35,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:35,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:35,704 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1088043865, now seen corresponding path program 40 times [2021-11-02 22:25:35,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:35,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604913180] [2021-11-02 22:25:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:35,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:37,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:37,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604913180] [2021-11-02 22:25:37,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604913180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:37,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88365305] [2021-11-02 22:25:37,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:25:37,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:37,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:37,678 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:37,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 22:25:39,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:25:39,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-02 22:25:39,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:39,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88365305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:39,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:39,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2021-11-02 22:25:39,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110119138] [2021-11-02 22:25:39,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-02 22:25:39,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-02 22:25:39,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2021-11-02 22:25:39,709 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 84 states, 83 states have (on average 2.4939759036144578) internal successors, (207), 84 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:40,856 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2021-11-02 22:25:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-02 22:25:40,856 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.4939759036144578) internal successors, (207), 84 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-11-02 22:25:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:40,857 INFO L225 Difference]: With dead ends: 215 [2021-11-02 22:25:40,857 INFO L226 Difference]: Without dead ends: 214 [2021-11-02 22:25:40,859 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4429, Invalid=11071, Unknown=0, NotChecked=0, Total=15500 [2021-11-02 22:25:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-02 22:25:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 213. [2021-11-02 22:25:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.0047169811320755) internal successors, (213), 212 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 22:25:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2021-11-02 22:25:40,865 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 207 [2021-11-02 22:25:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:40,866 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2021-11-02 22:25:40,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.4939759036144578) internal successors, (207), 84 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:40,866 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2021-11-02 22:25:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-02 22:25:40,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:40,868 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 1, 1, 1, 1] [2021-11-02 22:25:40,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:41,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-02 22:25:41,085 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:41,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2049137549, now seen corresponding path program 41 times [2021-11-02 22:25:41,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:41,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634002213] [2021-11-02 22:25:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:41,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:43,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:43,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634002213] [2021-11-02 22:25:43,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634002213] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:43,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003172600] [2021-11-02 22:25:43,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:25:43,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:43,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:43,249 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:43,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 22:25:44,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-02 22:25:44,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:44,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-02 22:25:44,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:45,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003172600] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:45,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:45,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2021-11-02 22:25:45,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228175151] [2021-11-02 22:25:45,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-02 22:25:45,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:45,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-02 22:25:45,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2021-11-02 22:25:45,424 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand has 86 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 86 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 22:25:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:46,654 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2021-11-02 22:25:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-02 22:25:46,655 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 86 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) Word has length 212 [2021-11-02 22:25:46,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:46,656 INFO L225 Difference]: With dead ends: 220 [2021-11-02 22:25:46,656 INFO L226 Difference]: Without dead ends: 219 [2021-11-02 22:25:46,657 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4642, Invalid=11614, Unknown=0, NotChecked=0, Total=16256 [2021-11-02 22:25:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-02 22:25:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2021-11-02 22:25:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.0046082949308757) internal successors, (218), 217 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-11-02 22:25:46,663 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 212 [2021-11-02 22:25:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:46,664 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-11-02 22:25:46,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.4941176470588236) internal successors, (212), 86 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 22:25:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-11-02 22:25:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-02 22:25:46,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:46,666 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 1, 1, 1, 1] [2021-11-02 22:25:46,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-02 22:25:46,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-02 22:25:46,881 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:46,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1706411047, now seen corresponding path program 42 times [2021-11-02 22:25:46,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:46,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096281543] [2021-11-02 22:25:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:46,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:48,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:48,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096281543] [2021-11-02 22:25:48,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096281543] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:48,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880429308] [2021-11-02 22:25:48,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:25:48,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:48,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:48,990 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:48,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 22:25:50,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-02 22:25:50,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:25:50,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-02 22:25:50,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:51,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880429308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:51,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:51,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2021-11-02 22:25:51,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894914241] [2021-11-02 22:25:51,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-02 22:25:51,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:51,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-02 22:25:51,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2021-11-02 22:25:51,235 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 88 states, 87 states have (on average 2.4942528735632186) internal successors, (217), 88 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 22:25:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:52,573 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2021-11-02 22:25:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-02 22:25:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.4942528735632186) internal successors, (217), 88 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 217 [2021-11-02 22:25:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:52,574 INFO L225 Difference]: With dead ends: 225 [2021-11-02 22:25:52,574 INFO L226 Difference]: Without dead ends: 224 [2021-11-02 22:25:52,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4860, Invalid=12170, Unknown=0, NotChecked=0, Total=17030 [2021-11-02 22:25:52,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-11-02 22:25:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2021-11-02 22:25:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.0045045045045045) internal successors, (223), 222 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2021-11-02 22:25:52,581 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 217 [2021-11-02 22:25:52,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:52,581 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2021-11-02 22:25:52,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.4942528735632186) internal successors, (217), 88 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 22:25:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2021-11-02 22:25:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-02 22:25:52,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:52,583 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 1, 1, 1, 1] [2021-11-02 22:25:52,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:52,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-02 22:25:52,783 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1629465357, now seen corresponding path program 43 times [2021-11-02 22:25:52,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:52,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840919708] [2021-11-02 22:25:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:52,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:54,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:25:54,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840919708] [2021-11-02 22:25:54,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840919708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:54,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925574617] [2021-11-02 22:25:54,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:25:54,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:25:54,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:25:54,986 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:25:54,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 22:25:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:25:56,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-02 22:25:56,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:25:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:25:57,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925574617] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:25:57,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:25:57,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2021-11-02 22:25:57,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836289512] [2021-11-02 22:25:57,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-11-02 22:25:57,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:25:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-11-02 22:25:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2021-11-02 22:25:57,153 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 90 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:25:58,621 INFO L93 Difference]: Finished difference Result 230 states and 230 transitions. [2021-11-02 22:25:58,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-02 22:25:58,621 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 90 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2021-11-02 22:25:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:25:58,622 INFO L225 Difference]: With dead ends: 230 [2021-11-02 22:25:58,623 INFO L226 Difference]: Without dead ends: 229 [2021-11-02 22:25:58,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=5083, Invalid=12739, Unknown=0, NotChecked=0, Total=17822 [2021-11-02 22:25:58,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-02 22:25:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 228. [2021-11-02 22:25:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.0044052863436124) internal successors, (228), 227 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2021-11-02 22:25:58,631 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 222 [2021-11-02 22:25:58,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:25:58,632 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2021-11-02 22:25:58,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.49438202247191) internal successors, (222), 90 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:25:58,632 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2021-11-02 22:25:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 22:25:58,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:25:58,634 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 1, 1, 1, 1] [2021-11-02 22:25:58,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-02 22:25:58,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 22:25:58,840 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:25:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:25:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1511234649, now seen corresponding path program 44 times [2021-11-02 22:25:58,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:25:58,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979700200] [2021-11-02 22:25:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:25:58,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:25:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:01,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:01,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979700200] [2021-11-02 22:26:01,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979700200] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:01,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102819717] [2021-11-02 22:26:01,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:01,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:01,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:01,204 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:01,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 22:26:02,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:02,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:02,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-02 22:26:02,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:03,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:03,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102819717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:03,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:03,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2021-11-02 22:26:03,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690708676] [2021-11-02 22:26:03,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-02 22:26:03,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:03,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-02 22:26:03,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2021-11-02 22:26:03,509 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand has 92 states, 91 states have (on average 2.4945054945054945) internal successors, (227), 92 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:04,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:04,872 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2021-11-02 22:26:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-02 22:26:04,873 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.4945054945054945) internal successors, (227), 92 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2021-11-02 22:26:04,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:04,874 INFO L225 Difference]: With dead ends: 235 [2021-11-02 22:26:04,874 INFO L226 Difference]: Without dead ends: 234 [2021-11-02 22:26:04,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5311, Invalid=13321, Unknown=0, NotChecked=0, Total=18632 [2021-11-02 22:26:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-02 22:26:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2021-11-02 22:26:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.0043103448275863) internal successors, (233), 232 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 22:26:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2021-11-02 22:26:04,883 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 227 [2021-11-02 22:26:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:04,884 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2021-11-02 22:26:04,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.4945054945054945) internal successors, (227), 92 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2021-11-02 22:26:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-02 22:26:04,886 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:04,886 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 1, 1, 1, 1] [2021-11-02 22:26:04,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:05,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:05,096 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1029793139, now seen corresponding path program 45 times [2021-11-02 22:26:05,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:05,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003824085] [2021-11-02 22:26:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:05,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:07,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:07,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003824085] [2021-11-02 22:26:07,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003824085] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:07,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500817357] [2021-11-02 22:26:07,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:07,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:07,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:07,576 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:07,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 22:26:09,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-02 22:26:09,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:09,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-02 22:26:09,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:10,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500817357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:10,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:10,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2021-11-02 22:26:10,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248672626] [2021-11-02 22:26:10,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-02 22:26:10,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:10,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-02 22:26:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-02 22:26:10,056 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:11,518 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-11-02 22:26:11,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-02 22:26:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2021-11-02 22:26:11,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:11,521 INFO L225 Difference]: With dead ends: 240 [2021-11-02 22:26:11,521 INFO L226 Difference]: Without dead ends: 239 [2021-11-02 22:26:11,523 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:26:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-02 22:26:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 238. [2021-11-02 22:26:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.0042194092827004) internal successors, (238), 237 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2021-11-02 22:26:11,530 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 232 [2021-11-02 22:26:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:11,531 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2021-11-02 22:26:11,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4946236559139785) internal successors, (232), 94 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:11,531 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2021-11-02 22:26:11,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-02 22:26:11,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:11,533 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-11-02 22:26:11,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:11,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-11-02 22:26:11,750 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:11,750 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 46 times [2021-11-02 22:26:11,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:11,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057110011] [2021-11-02 22:26:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:11,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:14,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:14,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:14,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057110011] [2021-11-02 22:26:14,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057110011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:14,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474238041] [2021-11-02 22:26:14,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:14,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:14,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:14,137 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:14,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 22:26:15,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:26:15,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:16,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-02 22:26:16,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:16,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474238041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:16,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:16,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2021-11-02 22:26:16,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297228619] [2021-11-02 22:26:16,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-02 22:26:16,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-02 22:26:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2021-11-02 22:26:16,800 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 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 22:26:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:18,371 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2021-11-02 22:26:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-02 22:26:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 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 237 [2021-11-02 22:26:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:18,373 INFO L225 Difference]: With dead ends: 245 [2021-11-02 22:26:18,373 INFO L226 Difference]: Without dead ends: 244 [2021-11-02 22:26:18,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5782, Invalid=14524, Unknown=0, NotChecked=0, Total=20306 [2021-11-02 22:26:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-02 22:26:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2021-11-02 22:26:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0041322314049588) internal successors, (243), 242 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2021-11-02 22:26:18,381 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 237 [2021-11-02 22:26:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:18,382 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2021-11-02 22:26:18,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.4947368421052634) internal successors, (237), 96 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 22:26:18,382 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2021-11-02 22:26:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-02 22:26:18,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:18,384 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 1, 1, 1, 1] [2021-11-02 22:26:18,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:18,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:18,600 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash 740808179, now seen corresponding path program 47 times [2021-11-02 22:26:18,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:18,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237101173] [2021-11-02 22:26:18,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:18,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:21,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:21,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237101173] [2021-11-02 22:26:21,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237101173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:21,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370021101] [2021-11-02 22:26:21,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:26:21,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:21,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:21,143 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:21,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 22:26:23,149 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-02 22:26:23,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:23,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-02 22:26:23,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:23,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370021101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:23,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:23,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2021-11-02 22:26:23,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481704684] [2021-11-02 22:26:23,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-02 22:26:23,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-02 22:26:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2021-11-02 22:26:23,761 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 98 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:25,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:25,287 INFO L93 Difference]: Finished difference Result 250 states and 250 transitions. [2021-11-02 22:26:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-02 22:26:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 98 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2021-11-02 22:26:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:25,289 INFO L225 Difference]: With dead ends: 250 [2021-11-02 22:26:25,289 INFO L226 Difference]: Without dead ends: 249 [2021-11-02 22:26:25,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=6025, Invalid=15145, Unknown=0, NotChecked=0, Total=21170 [2021-11-02 22:26:25,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-02 22:26:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 248. [2021-11-02 22:26:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0040485829959513) internal successors, (248), 247 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2021-11-02 22:26:25,294 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 242 [2021-11-02 22:26:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:25,294 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2021-11-02 22:26:25,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 98 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2021-11-02 22:26:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-02 22:26:25,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:25,295 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 1, 1, 1, 1] [2021-11-02 22:26:25,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:25,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:25,496 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1848476327, now seen corresponding path program 48 times [2021-11-02 22:26:25,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:25,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412372558] [2021-11-02 22:26:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:25,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:28,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:28,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412372558] [2021-11-02 22:26:28,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412372558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:28,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763184428] [2021-11-02 22:26:28,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:26:28,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:28,076 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:28,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 22:26:30,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-02 22:26:30,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:30,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-02 22:26:30,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:30,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763184428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:30,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:30,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2021-11-02 22:26:30,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532818026] [2021-11-02 22:26:30,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-02 22:26:30,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:30,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-02 22:26:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 22:26:30,740 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand has 100 states, 99 states have (on average 2.494949494949495) internal successors, (247), 100 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:32,457 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2021-11-02 22:26:32,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-02 22:26:32,457 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.494949494949495) internal successors, (247), 100 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2021-11-02 22:26:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:32,459 INFO L225 Difference]: With dead ends: 255 [2021-11-02 22:26:32,459 INFO L226 Difference]: Without dead ends: 254 [2021-11-02 22:26:32,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=6273, Invalid=15779, Unknown=0, NotChecked=0, Total=22052 [2021-11-02 22:26:32,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-02 22:26:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 253. [2021-11-02 22:26:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.003968253968254) internal successors, (253), 252 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2021-11-02 22:26:32,468 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 247 [2021-11-02 22:26:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:32,468 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2021-11-02 22:26:32,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.494949494949495) internal successors, (247), 100 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2021-11-02 22:26:32,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-02 22:26:32,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:32,470 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 1, 1, 1, 1] [2021-11-02 22:26:32,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:32,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-02 22:26:32,684 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1543218803, now seen corresponding path program 49 times [2021-11-02 22:26:32,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:32,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319487823] [2021-11-02 22:26:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:32,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:35,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:35,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319487823] [2021-11-02 22:26:35,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319487823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:35,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398250104] [2021-11-02 22:26:35,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:26:35,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:35,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:35,448 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:35,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 22:26:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:37,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-02 22:26:37,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:38,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398250104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:38,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:38,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2021-11-02 22:26:38,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278891479] [2021-11-02 22:26:38,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-02 22:26:38,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-02 22:26:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2021-11-02 22:26:38,244 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand has 102 states, 101 states have (on average 2.495049504950495) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:39,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:39,906 INFO L93 Difference]: Finished difference Result 260 states and 260 transitions. [2021-11-02 22:26:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-02 22:26:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.495049504950495) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 252 [2021-11-02 22:26:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:39,907 INFO L225 Difference]: With dead ends: 260 [2021-11-02 22:26:39,907 INFO L226 Difference]: Without dead ends: 259 [2021-11-02 22:26:39,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6526, Invalid=16426, Unknown=0, NotChecked=0, Total=22952 [2021-11-02 22:26:39,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-02 22:26:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2021-11-02 22:26:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.0038910505836576) internal successors, (258), 257 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:39,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2021-11-02 22:26:39,916 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 252 [2021-11-02 22:26:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:39,916 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2021-11-02 22:26:39,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.495049504950495) internal successors, (252), 102 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2021-11-02 22:26:39,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-02 22:26:39,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:39,918 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 1, 1, 1, 1] [2021-11-02 22:26:39,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:40,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-02 22:26:40,144 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash -190315993, now seen corresponding path program 50 times [2021-11-02 22:26:40,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:40,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092592076] [2021-11-02 22:26:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:40,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:42,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:42,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092592076] [2021-11-02 22:26:42,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092592076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:42,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983515931] [2021-11-02 22:26:42,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:26:42,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:42,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:42,932 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:42,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 22:26:45,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:26:45,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:45,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-02 22:26:45,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:45,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983515931] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:45,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:45,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2021-11-02 22:26:45,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595277561] [2021-11-02 22:26:45,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-02 22:26:45,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:45,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-02 22:26:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2021-11-02 22:26:45,729 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand has 104 states, 103 states have (on average 2.495145631067961) internal successors, (257), 104 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 22:26:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:47,430 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2021-11-02 22:26:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-02 22:26:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.495145631067961) internal successors, (257), 104 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 257 [2021-11-02 22:26:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:47,432 INFO L225 Difference]: With dead ends: 265 [2021-11-02 22:26:47,432 INFO L226 Difference]: Without dead ends: 264 [2021-11-02 22:26:47,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6784, Invalid=17086, Unknown=0, NotChecked=0, Total=23870 [2021-11-02 22:26:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-02 22:26:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2021-11-02 22:26:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.0038167938931297) internal successors, (263), 262 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2021-11-02 22:26:47,438 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 257 [2021-11-02 22:26:47,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:47,438 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2021-11-02 22:26:47,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.495145631067961) internal successors, (257), 104 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 22:26:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2021-11-02 22:26:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-02 22:26:47,440 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:47,440 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 1, 1, 1, 1] [2021-11-02 22:26:47,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-02 22:26:47,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-02 22:26:47,640 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1671747315, now seen corresponding path program 51 times [2021-11-02 22:26:47,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:47,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423381983] [2021-11-02 22:26:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:47,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:50,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:50,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423381983] [2021-11-02 22:26:50,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423381983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:50,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987663416] [2021-11-02 22:26:50,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:26:50,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:50,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:50,626 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:50,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 22:26:52,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-02 22:26:52,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:26:52,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-02 22:26:52,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:26:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:53,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987663416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:53,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:26:53,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2021-11-02 22:26:53,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481609498] [2021-11-02 22:26:53,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-02 22:26:53,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:26:53,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-02 22:26:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2021-11-02 22:26:53,673 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand has 106 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 106 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:26:55,441 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2021-11-02 22:26:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-02 22:26:55,441 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 106 states have internal predecessors, (262), 0 states have call successors, (0), 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 262 [2021-11-02 22:26:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:26:55,443 INFO L225 Difference]: With dead ends: 270 [2021-11-02 22:26:55,443 INFO L226 Difference]: Without dead ends: 269 [2021-11-02 22:26:55,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=7047, Invalid=17759, Unknown=0, NotChecked=0, Total=24806 [2021-11-02 22:26:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-11-02 22:26:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 268. [2021-11-02 22:26:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.00374531835206) internal successors, (268), 267 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 268 transitions. [2021-11-02 22:26:55,451 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 268 transitions. Word has length 262 [2021-11-02 22:26:55,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:26:55,452 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 268 transitions. [2021-11-02 22:26:55,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 106 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:26:55,452 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 268 transitions. [2021-11-02 22:26:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-02 22:26:55,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:26:55,454 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 1, 1, 1, 1] [2021-11-02 22:26:55,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-11-02 22:26:55,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-02 22:26:55,672 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:26:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:26:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 296296871, now seen corresponding path program 52 times [2021-11-02 22:26:55,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:26:55,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220139083] [2021-11-02 22:26:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:26:55,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:26:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:26:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:26:58,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:26:58,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220139083] [2021-11-02 22:26:58,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220139083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:26:58,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080114375] [2021-11-02 22:26:58,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:26:58,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:26:58,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:26:58,658 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:26:58,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 22:27:00,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:27:00,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:00,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-02 22:27:00,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:01,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080114375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:01,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:01,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2021-11-02 22:27:01,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138934196] [2021-11-02 22:27:01,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-02 22:27:01,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-02 22:27:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2021-11-02 22:27:01,671 INFO L87 Difference]: Start difference. First operand 268 states and 268 transitions. Second operand has 108 states, 107 states have (on average 2.4953271028037385) internal successors, (267), 108 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:03,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:03,540 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2021-11-02 22:27:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-02 22:27:03,541 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.4953271028037385) internal successors, (267), 108 states have internal predecessors, (267), 0 states have call successors, (0), 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 267 [2021-11-02 22:27:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:03,542 INFO L225 Difference]: With dead ends: 275 [2021-11-02 22:27:03,542 INFO L226 Difference]: Without dead ends: 274 [2021-11-02 22:27:03,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7315, Invalid=18445, Unknown=0, NotChecked=0, Total=25760 [2021-11-02 22:27:03,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-02 22:27:03,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2021-11-02 22:27:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.0036764705882353) internal successors, (273), 272 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2021-11-02 22:27:03,550 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 267 [2021-11-02 22:27:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:03,550 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2021-11-02 22:27:03,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.4953271028037385) internal successors, (267), 108 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2021-11-02 22:27:03,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-02 22:27:03,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:03,552 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1, 1] [2021-11-02 22:27:03,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:03,776 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:03,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1349773, now seen corresponding path program 53 times [2021-11-02 22:27:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:03,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200299375] [2021-11-02 22:27:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:03,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:06,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:06,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:06,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200299375] [2021-11-02 22:27:06,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200299375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:06,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115275785] [2021-11-02 22:27:06,835 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:27:06,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:06,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:06,836 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:06,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 22:27:09,309 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-02 22:27:09,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:09,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-02 22:27:09,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:09,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115275785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:09,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:09,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2021-11-02 22:27:09,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919222168] [2021-11-02 22:27:09,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-11-02 22:27:09,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-11-02 22:27:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2021-11-02 22:27:09,993 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand has 110 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 110 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:11,863 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions. [2021-11-02 22:27:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-02 22:27:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 110 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2021-11-02 22:27:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:11,865 INFO L225 Difference]: With dead ends: 280 [2021-11-02 22:27:11,865 INFO L226 Difference]: Without dead ends: 279 [2021-11-02 22:27:11,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=7588, Invalid=19144, Unknown=0, NotChecked=0, Total=26732 [2021-11-02 22:27:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-02 22:27:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-11-02 22:27:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.0036101083032491) internal successors, (278), 277 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 22:27:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2021-11-02 22:27:11,875 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 272 [2021-11-02 22:27:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:11,876 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2021-11-02 22:27:11,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 2.4954128440366974) internal successors, (272), 110 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:11,876 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2021-11-02 22:27:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-02 22:27:11,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:11,878 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 1, 1, 1, 1] [2021-11-02 22:27:11,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:12,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-02 22:27:12,096 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:12,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:12,096 INFO L85 PathProgramCache]: Analyzing trace with hash -982982361, now seen corresponding path program 54 times [2021-11-02 22:27:12,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:12,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585801523] [2021-11-02 22:27:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:12,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:15,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:15,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585801523] [2021-11-02 22:27:15,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585801523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:15,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446850602] [2021-11-02 22:27:15,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:27:15,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:15,363 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:15,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-02 22:27:17,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-02 22:27:17,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:17,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-02 22:27:17,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:18,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446850602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:18,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:18,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2021-11-02 22:27:18,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133598566] [2021-11-02 22:27:18,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-02 22:27:18,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-02 22:27:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2021-11-02 22:27:18,779 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand has 112 states, 111 states have (on average 2.4954954954954953) internal successors, (277), 112 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 22:27:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:21,161 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2021-11-02 22:27:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-11-02 22:27:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.4954954954954953) internal successors, (277), 112 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 277 [2021-11-02 22:27:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:21,162 INFO L225 Difference]: With dead ends: 285 [2021-11-02 22:27:21,162 INFO L226 Difference]: Without dead ends: 284 [2021-11-02 22:27:21,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7866, Invalid=19856, Unknown=0, NotChecked=0, Total=27722 [2021-11-02 22:27:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-02 22:27:21,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2021-11-02 22:27:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.00354609929078) internal successors, (283), 282 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2021-11-02 22:27:21,170 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 277 [2021-11-02 22:27:21,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:21,171 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2021-11-02 22:27:21,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.4954954954954953) internal successors, (277), 112 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 22:27:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2021-11-02 22:27:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-02 22:27:21,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:21,173 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 1, 1, 1, 1] [2021-11-02 22:27:21,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-11-02 22:27:21,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:27:21,392 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1818798093, now seen corresponding path program 55 times [2021-11-02 22:27:21,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:21,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808823115] [2021-11-02 22:27:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:21,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:24,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:24,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808823115] [2021-11-02 22:27:24,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808823115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:24,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898308412] [2021-11-02 22:27:24,714 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:27:24,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:24,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:24,715 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:24,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-02 22:27:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:27,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-02 22:27:27,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:28,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898308412] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:28,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:28,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2021-11-02 22:27:28,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081643576] [2021-11-02 22:27:28,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-02 22:27:28,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-02 22:27:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2021-11-02 22:27:28,012 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand has 114 states, 113 states have (on average 2.495575221238938) internal successors, (282), 114 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:30,024 INFO L93 Difference]: Finished difference Result 290 states and 290 transitions. [2021-11-02 22:27:30,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-02 22:27:30,024 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.495575221238938) internal successors, (282), 114 states have internal predecessors, (282), 0 states have call successors, (0), 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 282 [2021-11-02 22:27:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:30,026 INFO L225 Difference]: With dead ends: 290 [2021-11-02 22:27:30,026 INFO L226 Difference]: Without dead ends: 289 [2021-11-02 22:27:30,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=8149, Invalid=20581, Unknown=0, NotChecked=0, Total=28730 [2021-11-02 22:27:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-02 22:27:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-11-02 22:27:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.0034843205574913) internal successors, (288), 287 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2021-11-02 22:27:30,033 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 282 [2021-11-02 22:27:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:30,033 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2021-11-02 22:27:30,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.495575221238938) internal successors, (282), 114 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2021-11-02 22:27:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-02 22:27:30,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:30,035 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 1, 1, 1, 1] [2021-11-02 22:27:30,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:30,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:30,240 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash 706691239, now seen corresponding path program 56 times [2021-11-02 22:27:30,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:30,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765591907] [2021-11-02 22:27:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:30,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:33,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:33,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765591907] [2021-11-02 22:27:33,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765591907] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:33,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87960976] [2021-11-02 22:27:33,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:27:33,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:33,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:33,686 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:33,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-02 22:27:36,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:27:36,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:36,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 115 conjunts are in the unsatisfiable core [2021-11-02 22:27:36,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:37,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87960976] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:37,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:37,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2021-11-02 22:27:37,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614460504] [2021-11-02 22:27:37,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-02 22:27:37,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-02 22:27:37,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2021-11-02 22:27:37,069 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand has 116 states, 115 states have (on average 2.4956521739130433) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:39,177 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2021-11-02 22:27:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-02 22:27:39,178 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.4956521739130433) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2021-11-02 22:27:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:39,179 INFO L225 Difference]: With dead ends: 295 [2021-11-02 22:27:39,179 INFO L226 Difference]: Without dead ends: 294 [2021-11-02 22:27:39,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8437, Invalid=21319, Unknown=0, NotChecked=0, Total=29756 [2021-11-02 22:27:39,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-02 22:27:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2021-11-02 22:27:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.0034246575342465) internal successors, (293), 292 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2021-11-02 22:27:39,187 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 287 [2021-11-02 22:27:39,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:39,188 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2021-11-02 22:27:39,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.4956521739130433) internal successors, (287), 116 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2021-11-02 22:27:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-02 22:27:39,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:39,190 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 1, 1, 1, 1] [2021-11-02 22:27:39,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-02 22:27:39,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:39,404 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:39,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1485789069, now seen corresponding path program 57 times [2021-11-02 22:27:39,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:39,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166408538] [2021-11-02 22:27:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:39,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:42,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:42,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166408538] [2021-11-02 22:27:42,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166408538] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:42,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714032188] [2021-11-02 22:27:42,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:27:42,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:42,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:42,928 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:42,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-02 22:27:45,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-02 22:27:45,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:45,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-02 22:27:45,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714032188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:46,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:46,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2021-11-02 22:27:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018665788] [2021-11-02 22:27:46,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-02 22:27:46,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-02 22:27:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2021-11-02 22:27:46,567 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand has 118 states, 117 states have (on average 2.4957264957264957) internal successors, (292), 118 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:48,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:48,767 INFO L93 Difference]: Finished difference Result 300 states and 300 transitions. [2021-11-02 22:27:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-02 22:27:48,768 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.4957264957264957) internal successors, (292), 118 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 292 [2021-11-02 22:27:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:48,769 INFO L225 Difference]: With dead ends: 300 [2021-11-02 22:27:48,769 INFO L226 Difference]: Without dead ends: 299 [2021-11-02 22:27:48,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8730, Invalid=22070, Unknown=0, NotChecked=0, Total=30800 [2021-11-02 22:27:48,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-02 22:27:48,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2021-11-02 22:27:48,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.0033670033670035) internal successors, (298), 297 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2021-11-02 22:27:48,777 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 292 [2021-11-02 22:27:48,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:48,778 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2021-11-02 22:27:48,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.4957264957264957) internal successors, (292), 118 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2021-11-02 22:27:48,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-02 22:27:48,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:48,780 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 1, 1, 1, 1] [2021-11-02 22:27:48,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:49,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-11-02 22:27:49,004 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:49,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:49,004 INFO L85 PathProgramCache]: Analyzing trace with hash -201048025, now seen corresponding path program 58 times [2021-11-02 22:27:49,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:49,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750637134] [2021-11-02 22:27:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:49,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:27:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:52,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:27:52,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750637134] [2021-11-02 22:27:52,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750637134] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:52,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386347964] [2021-11-02 22:27:52,659 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:27:52,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:27:52,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:27:52,660 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:27:52,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-02 22:27:55,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:27:55,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:27:55,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-02 22:27:55,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:27:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:27:56,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386347964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:27:56,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:27:56,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2021-11-02 22:27:56,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444733875] [2021-11-02 22:27:56,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-02 22:27:56,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:27:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-02 22:27:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2021-11-02 22:27:56,244 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand has 120 states, 119 states have (on average 2.495798319327731) internal successors, (297), 120 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 22:27:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:27:58,532 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2021-11-02 22:27:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-11-02 22:27:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.495798319327731) internal successors, (297), 120 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 297 [2021-11-02 22:27:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:27:58,534 INFO L225 Difference]: With dead ends: 305 [2021-11-02 22:27:58,534 INFO L226 Difference]: Without dead ends: 304 [2021-11-02 22:27:58,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=9028, Invalid=22834, Unknown=0, NotChecked=0, Total=31862 [2021-11-02 22:27:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-11-02 22:27:58,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 303. [2021-11-02 22:27:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0033112582781456) internal successors, (303), 302 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:27:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2021-11-02 22:27:58,541 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 297 [2021-11-02 22:27:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:27:58,541 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2021-11-02 22:27:58,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.495798319327731) internal successors, (297), 120 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 22:27:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2021-11-02 22:27:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-02 22:27:58,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:27:58,544 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 1, 1, 1, 1] [2021-11-02 22:27:58,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-02 22:27:58,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-02 22:27:58,764 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:27:58,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:27:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1782536435, now seen corresponding path program 59 times [2021-11-02 22:27:58,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:27:58,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570175487] [2021-11-02 22:27:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:27:58,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:27:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8791 backedges. 0 proven. 8791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:02,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:02,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570175487] [2021-11-02 22:28:02,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570175487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:02,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31921790] [2021-11-02 22:28:02,640 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:28:02,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:02,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:02,641 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:02,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-02 22:28:05,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-02 22:28:05,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:05,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-02 22:28:05,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8791 backedges. 0 proven. 8791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:06,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31921790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:06,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:06,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2021-11-02 22:28:06,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14075104] [2021-11-02 22:28:06,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-11-02 22:28:06,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:06,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-11-02 22:28:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2021-11-02 22:28:06,472 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand has 122 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 122 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 22:28:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:08,826 INFO L93 Difference]: Finished difference Result 310 states and 310 transitions. [2021-11-02 22:28:08,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-11-02 22:28:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 122 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) Word has length 302 [2021-11-02 22:28:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:08,827 INFO L225 Difference]: With dead ends: 310 [2021-11-02 22:28:08,828 INFO L226 Difference]: Without dead ends: 309 [2021-11-02 22:28:08,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9331, Invalid=23611, Unknown=0, NotChecked=0, Total=32942 [2021-11-02 22:28:08,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-02 22:28:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 308. [2021-11-02 22:28:08,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.003257328990228) internal successors, (308), 307 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 308 transitions. [2021-11-02 22:28:08,835 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 308 transitions. Word has length 302 [2021-11-02 22:28:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:08,836 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 308 transitions. [2021-11-02 22:28:08,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 2.4958677685950414) internal successors, (302), 122 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 22:28:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 308 transitions. [2021-11-02 22:28:08,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-02 22:28:08,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:08,838 INFO L513 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 1, 1, 1, 1] [2021-11-02 22:28:08,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-02 22:28:09,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:09,051 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:28:09,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:09,052 INFO L85 PathProgramCache]: Analyzing trace with hash -246423641, now seen corresponding path program 60 times [2021-11-02 22:28:09,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:09,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597255698] [2021-11-02 22:28:09,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:09,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 0 proven. 9090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:13,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:13,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597255698] [2021-11-02 22:28:13,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597255698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:13,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676807924] [2021-11-02 22:28:13,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:28:13,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:13,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:13,053 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:13,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-02 22:28:16,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-02 22:28:16,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:16,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-02 22:28:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 0 proven. 9090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:16,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676807924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:16,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:16,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2021-11-02 22:28:16,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397883563] [2021-11-02 22:28:16,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-02 22:28:16,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-02 22:28:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 22:28:16,975 INFO L87 Difference]: Start difference. First operand 308 states and 308 transitions. Second operand has 124 states, 123 states have (on average 2.4959349593495936) internal successors, (307), 124 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:19,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:19,364 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2021-11-02 22:28:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-11-02 22:28:19,365 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.4959349593495936) internal successors, (307), 124 states have internal predecessors, (307), 0 states have call successors, (0), 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 307 [2021-11-02 22:28:19,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:19,366 INFO L225 Difference]: With dead ends: 315 [2021-11-02 22:28:19,366 INFO L226 Difference]: Without dead ends: 314 [2021-11-02 22:28:19,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=9639, Invalid=24401, Unknown=0, NotChecked=0, Total=34040 [2021-11-02 22:28:19,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-02 22:28:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2021-11-02 22:28:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.0032051282051282) internal successors, (313), 312 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 22:28:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2021-11-02 22:28:19,376 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 307 [2021-11-02 22:28:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:19,377 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2021-11-02 22:28:19,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 2.4959349593495936) internal successors, (307), 124 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2021-11-02 22:28:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-02 22:28:19,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:19,379 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 1, 1, 1, 1] [2021-11-02 22:28:19,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-11-02 22:28:19,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:19,592 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:28:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:19,592 INFO L85 PathProgramCache]: Analyzing trace with hash 818637171, now seen corresponding path program 61 times [2021-11-02 22:28:19,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:19,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21960138] [2021-11-02 22:28:19,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:19,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9394 backedges. 0 proven. 9394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:23,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:23,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21960138] [2021-11-02 22:28:23,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21960138] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:23,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737631170] [2021-11-02 22:28:23,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:28:23,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:23,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:23,582 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:23,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-02 22:28:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 125 conjunts are in the unsatisfiable core [2021-11-02 22:28:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:27,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9394 backedges. 0 proven. 9394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:27,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737631170] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:27,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:27,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2021-11-02 22:28:27,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610648605] [2021-11-02 22:28:27,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-11-02 22:28:27,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-11-02 22:28:27,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2021-11-02 22:28:27,524 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:30,035 INFO L93 Difference]: Finished difference Result 320 states and 320 transitions. [2021-11-02 22:28:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-02 22:28:30,036 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2021-11-02 22:28:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:30,037 INFO L225 Difference]: With dead ends: 320 [2021-11-02 22:28:30,037 INFO L226 Difference]: Without dead ends: 319 [2021-11-02 22:28:30,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9952, Invalid=25204, Unknown=0, NotChecked=0, Total=35156 [2021-11-02 22:28:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-11-02 22:28:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2021-11-02 22:28:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.003154574132492) internal successors, (318), 317 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:30,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 318 transitions. [2021-11-02 22:28:30,046 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 318 transitions. Word has length 312 [2021-11-02 22:28:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:30,046 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 318 transitions. [2021-11-02 22:28:30,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.496) internal successors, (312), 126 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 318 transitions. [2021-11-02 22:28:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-02 22:28:30,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:30,047 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1] [2021-11-02 22:28:30,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:30,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:30,248 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:28:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1975902425, now seen corresponding path program 62 times [2021-11-02 22:28:30,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:30,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176685502] [2021-11-02 22:28:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:30,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:34,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176685502] [2021-11-02 22:28:34,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176685502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:34,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853517883] [2021-11-02 22:28:34,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:28:34,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:34,400 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:34,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-02 22:28:37,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:28:37,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:37,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-02 22:28:37,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:38,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853517883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:38,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:38,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2021-11-02 22:28:38,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435316055] [2021-11-02 22:28:38,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-02 22:28:38,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-02 22:28:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2021-11-02 22:28:38,442 INFO L87 Difference]: Start difference. First operand 318 states and 318 transitions. Second operand has 128 states, 127 states have (on average 2.4960629921259843) internal successors, (317), 128 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 22:28:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:40,979 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2021-11-02 22:28:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-02 22:28:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.4960629921259843) internal successors, (317), 128 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 317 [2021-11-02 22:28:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:40,981 INFO L225 Difference]: With dead ends: 325 [2021-11-02 22:28:40,981 INFO L226 Difference]: Without dead ends: 324 [2021-11-02 22:28:40,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=10270, Invalid=26020, Unknown=0, NotChecked=0, Total=36290 [2021-11-02 22:28:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-02 22:28:40,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 323. [2021-11-02 22:28:40,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.0031055900621118) internal successors, (323), 322 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 22:28:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2021-11-02 22:28:40,990 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 317 [2021-11-02 22:28:40,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:40,990 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2021-11-02 22:28:40,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.4960629921259843) internal successors, (317), 128 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 22:28:40,990 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2021-11-02 22:28:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-02 22:28:40,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:40,992 INFO L513 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 1, 1, 1, 1] [2021-11-02 22:28:41,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:41,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:41,210 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:28:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash -170075661, now seen corresponding path program 63 times [2021-11-02 22:28:41,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:41,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959060679] [2021-11-02 22:28:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:41,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10017 backedges. 0 proven. 10017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:45,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:45,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959060679] [2021-11-02 22:28:45,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959060679] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:45,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040768211] [2021-11-02 22:28:45,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:28:45,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:45,546 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:45,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-02 22:28:49,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-02 22:28:49,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:28:49,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-02 22:28:49,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:28:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10017 backedges. 0 proven. 10017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:49,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040768211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:49,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:28:49,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2021-11-02 22:28:49,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636600651] [2021-11-02 22:28:49,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-02 22:28:49,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:28:49,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-02 22:28:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2021-11-02 22:28:49,921 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand has 130 states, 129 states have (on average 2.496124031007752) internal successors, (322), 130 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:52,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:28:52,611 INFO L93 Difference]: Finished difference Result 330 states and 330 transitions. [2021-11-02 22:28:52,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-11-02 22:28:52,611 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 2.496124031007752) internal successors, (322), 130 states have internal predecessors, (322), 0 states have call successors, (0), 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 322 [2021-11-02 22:28:52,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:28:52,613 INFO L225 Difference]: With dead ends: 330 [2021-11-02 22:28:52,613 INFO L226 Difference]: Without dead ends: 329 [2021-11-02 22:28:52,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=10593, Invalid=26849, Unknown=0, NotChecked=0, Total=37442 [2021-11-02 22:28:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-02 22:28:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 328. [2021-11-02 22:28:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.003058103975535) internal successors, (328), 327 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2021-11-02 22:28:52,625 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 322 [2021-11-02 22:28:52,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:28:52,625 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2021-11-02 22:28:52,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 2.496124031007752) internal successors, (322), 130 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:28:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2021-11-02 22:28:52,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-02 22:28:52,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:28:52,628 INFO L513 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 1, 1, 1, 1] [2021-11-02 22:28:52,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-11-02 22:28:52,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-02 22:28:52,856 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:28:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:28:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1090191015, now seen corresponding path program 64 times [2021-11-02 22:28:52,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:28:52,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427234868] [2021-11-02 22:28:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:28:52,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:28:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:28:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10336 backedges. 0 proven. 10336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:28:57,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:28:57,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427234868] [2021-11-02 22:28:57,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427234868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:28:57,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706335006] [2021-11-02 22:28:57,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:28:57,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:28:57,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:57,244 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:28:57,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-02 22:29:00,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:29:00,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:00,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 131 conjunts are in the unsatisfiable core [2021-11-02 22:29:00,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10336 backedges. 0 proven. 10336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:01,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706335006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:01,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:01,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2021-11-02 22:29:01,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085979965] [2021-11-02 22:29:01,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-02 22:29:01,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:01,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-02 22:29:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2021-11-02 22:29:01,579 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand has 132 states, 131 states have (on average 2.49618320610687) internal successors, (327), 132 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:04,280 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2021-11-02 22:29:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-02 22:29:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 2.49618320610687) internal successors, (327), 132 states have internal predecessors, (327), 0 states have call successors, (0), 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 327 [2021-11-02 22:29:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:04,282 INFO L225 Difference]: With dead ends: 335 [2021-11-02 22:29:04,282 INFO L226 Difference]: Without dead ends: 334 [2021-11-02 22:29:04,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=10921, Invalid=27691, Unknown=0, NotChecked=0, Total=38612 [2021-11-02 22:29:04,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-02 22:29:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 333. [2021-11-02 22:29:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.0030120481927711) internal successors, (333), 332 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 22:29:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2021-11-02 22:29:04,291 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 327 [2021-11-02 22:29:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:04,291 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2021-11-02 22:29:04,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 2.49618320610687) internal successors, (327), 132 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2021-11-02 22:29:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-02 22:29:04,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:04,293 INFO L513 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 1, 1, 1, 1] [2021-11-02 22:29:04,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:04,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-02 22:29:04,493 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:29:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -633623949, now seen corresponding path program 65 times [2021-11-02 22:29:04,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:04,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13546871] [2021-11-02 22:29:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:04,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 10660 backedges. 0 proven. 10660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:09,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:09,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13546871] [2021-11-02 22:29:09,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13546871] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:09,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371238630] [2021-11-02 22:29:09,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:29:09,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:09,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:09,035 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:09,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-02 22:29:12,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-11-02 22:29:12,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-02 22:29:12,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 10660 backedges. 0 proven. 10660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:13,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371238630] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:13,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:13,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2021-11-02 22:29:13,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828723840] [2021-11-02 22:29:13,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2021-11-02 22:29:13,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2021-11-02 22:29:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4555, Invalid=13267, Unknown=0, NotChecked=0, Total=17822 [2021-11-02 22:29:13,524 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand has 134 states, 133 states have (on average 2.4962406015037595) internal successors, (332), 134 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:16,328 INFO L93 Difference]: Finished difference Result 340 states and 340 transitions. [2021-11-02 22:29:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-11-02 22:29:16,328 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 133 states have (on average 2.4962406015037595) internal successors, (332), 134 states have internal predecessors, (332), 0 states have call successors, (0), 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 332 [2021-11-02 22:29:16,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:16,329 INFO L225 Difference]: With dead ends: 340 [2021-11-02 22:29:16,330 INFO L226 Difference]: Without dead ends: 339 [2021-11-02 22:29:16,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=11254, Invalid=28546, Unknown=0, NotChecked=0, Total=39800 [2021-11-02 22:29:16,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-02 22:29:16,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 338. [2021-11-02 22:29:16,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.002967359050445) internal successors, (338), 337 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2021-11-02 22:29:16,337 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 332 [2021-11-02 22:29:16,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:16,338 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2021-11-02 22:29:16,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 133 states have (on average 2.4962406015037595) internal successors, (332), 134 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:16,338 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2021-11-02 22:29:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-02 22:29:16,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:16,340 INFO L513 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 1, 1, 1, 1] [2021-11-02 22:29:16,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:16,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:16,560 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:29:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:16,560 INFO L85 PathProgramCache]: Analyzing trace with hash 835354151, now seen corresponding path program 66 times [2021-11-02 22:29:16,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:16,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829740121] [2021-11-02 22:29:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10989 backedges. 0 proven. 10989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:21,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:21,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829740121] [2021-11-02 22:29:21,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829740121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:21,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718391158] [2021-11-02 22:29:21,174 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:29:21,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:21,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:21,175 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:21,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-02 22:29:24,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-11-02 22:29:24,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:24,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 135 conjunts are in the unsatisfiable core [2021-11-02 22:29:24,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:25,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10989 backedges. 0 proven. 10989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:25,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718391158] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:25,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:25,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2021-11-02 22:29:25,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120686698] [2021-11-02 22:29:25,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2021-11-02 22:29:25,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2021-11-02 22:29:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4691, Invalid=13669, Unknown=0, NotChecked=0, Total=18360 [2021-11-02 22:29:25,787 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand has 136 states, 135 states have (on average 2.4962962962962965) internal successors, (337), 136 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 22:29:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:28,741 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2021-11-02 22:29:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-11-02 22:29:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 2.4962962962962965) internal successors, (337), 136 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 337 [2021-11-02 22:29:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:28,743 INFO L225 Difference]: With dead ends: 345 [2021-11-02 22:29:28,743 INFO L226 Difference]: Without dead ends: 344 [2021-11-02 22:29:28,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=11592, Invalid=29414, Unknown=0, NotChecked=0, Total=41006 [2021-11-02 22:29:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-02 22:29:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2021-11-02 22:29:28,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.0029239766081872) internal successors, (343), 342 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2021-11-02 22:29:28,753 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 337 [2021-11-02 22:29:28,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:28,753 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2021-11-02 22:29:28,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 2.4962962962962965) internal successors, (337), 136 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 22:29:28,753 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2021-11-02 22:29:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-02 22:29:28,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:28,756 INFO L513 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 1, 1, 1, 1] [2021-11-02 22:29:28,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:28,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:28,980 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:29:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1531979021, now seen corresponding path program 67 times [2021-11-02 22:29:28,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:28,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958163595] [2021-11-02 22:29:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:28,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11323 backedges. 0 proven. 11323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:33,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:33,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958163595] [2021-11-02 22:29:33,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958163595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:33,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659325114] [2021-11-02 22:29:33,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:29:33,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:33,698 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:33,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-02 22:29:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:37,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 137 conjunts are in the unsatisfiable core [2021-11-02 22:29:37,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11323 backedges. 0 proven. 11323 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:38,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659325114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:38,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:38,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2021-11-02 22:29:38,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023720100] [2021-11-02 22:29:38,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2021-11-02 22:29:38,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2021-11-02 22:29:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4829, Invalid=14077, Unknown=0, NotChecked=0, Total=18906 [2021-11-02 22:29:38,294 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand has 138 states, 137 states have (on average 2.4963503649635035) internal successors, (342), 138 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:41,347 INFO L93 Difference]: Finished difference Result 350 states and 350 transitions. [2021-11-02 22:29:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-11-02 22:29:41,347 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 137 states have (on average 2.4963503649635035) internal successors, (342), 138 states have internal predecessors, (342), 0 states have call successors, (0), 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 342 [2021-11-02 22:29:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:41,349 INFO L225 Difference]: With dead ends: 350 [2021-11-02 22:29:41,349 INFO L226 Difference]: Without dead ends: 349 [2021-11-02 22:29:41,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=11935, Invalid=30295, Unknown=0, NotChecked=0, Total=42230 [2021-11-02 22:29:41,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-02 22:29:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348. [2021-11-02 22:29:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.0028818443804035) internal successors, (348), 347 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2021-11-02 22:29:41,357 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 342 [2021-11-02 22:29:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:41,357 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2021-11-02 22:29:41,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 137 states have (on average 2.4963503649635035) internal successors, (342), 138 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2021-11-02 22:29:41,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-02 22:29:41,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:41,358 INFO L513 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 1, 1, 1, 1] [2021-11-02 22:29:41,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:41,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-11-02 22:29:41,559 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:29:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:41,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1830773337, now seen corresponding path program 68 times [2021-11-02 22:29:41,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:41,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153687616] [2021-11-02 22:29:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:41,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:46,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11662 backedges. 0 proven. 11662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:46,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:46,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153687616] [2021-11-02 22:29:46,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153687616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:46,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335104003] [2021-11-02 22:29:46,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:29:46,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:46,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:46,439 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:46,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-02 22:29:50,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:29:50,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:29:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 935 conjuncts, 139 conjunts are in the unsatisfiable core [2021-11-02 22:29:50,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:51,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11662 backedges. 0 proven. 11662 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:51,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335104003] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:51,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:29:51,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2021-11-02 22:29:51,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540711778] [2021-11-02 22:29:51,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2021-11-02 22:29:51,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:29:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2021-11-02 22:29:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4969, Invalid=14491, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:29:51,186 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand has 140 states, 139 states have (on average 2.4964028776978417) internal successors, (347), 140 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 22:29:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:54,362 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2021-11-02 22:29:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-02 22:29:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 139 states have (on average 2.4964028776978417) internal successors, (347), 140 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) Word has length 347 [2021-11-02 22:29:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:54,364 INFO L225 Difference]: With dead ends: 355 [2021-11-02 22:29:54,364 INFO L226 Difference]: Without dead ends: 354 [2021-11-02 22:29:54,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=12283, Invalid=31189, Unknown=0, NotChecked=0, Total=43472 [2021-11-02 22:29:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-11-02 22:29:54,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 353. [2021-11-02 22:29:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.0028409090909092) internal successors, (353), 352 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:29:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2021-11-02 22:29:54,372 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 347 [2021-11-02 22:29:54,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:54,372 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2021-11-02 22:29:54,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 139 states have (on average 2.4964028776978417) internal successors, (347), 140 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 22:29:54,372 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2021-11-02 22:29:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-11-02 22:29:54,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:54,373 INFO L513 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 1, 1, 1, 1] [2021-11-02 22:29:54,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:54,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:54,576 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:29:54,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1107389299, now seen corresponding path program 69 times [2021-11-02 22:29:54,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:29:54,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200534437] [2021-11-02 22:29:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:54,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:29:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12006 backedges. 0 proven. 12006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:59,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:29:59,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200534437] [2021-11-02 22:29:59,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200534437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:29:59,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313085300] [2021-11-02 22:29:59,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:29:59,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:29:59,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:29:59,607 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:29:59,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-02 22:30:03,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-11-02 22:30:03,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:03,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 141 conjunts are in the unsatisfiable core [2021-11-02 22:30:03,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12006 backedges. 0 proven. 12006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:04,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313085300] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:04,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:04,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2021-11-02 22:30:04,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978850595] [2021-11-02 22:30:04,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2021-11-02 22:30:04,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2021-11-02 22:30:04,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5111, Invalid=14911, Unknown=0, NotChecked=0, Total=20022 [2021-11-02 22:30:04,622 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand has 142 states, 141 states have (on average 2.49645390070922) internal successors, (352), 142 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:07,911 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2021-11-02 22:30:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2021-11-02 22:30:07,911 INFO L78 Accepts]: Start accepts. Automaton has has 142 states, 141 states have (on average 2.49645390070922) internal successors, (352), 142 states have internal predecessors, (352), 0 states have call successors, (0), 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 352 [2021-11-02 22:30:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:07,913 INFO L225 Difference]: With dead ends: 360 [2021-11-02 22:30:07,913 INFO L226 Difference]: Without dead ends: 359 [2021-11-02 22:30:07,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=12636, Invalid=32096, Unknown=0, NotChecked=0, Total=44732 [2021-11-02 22:30:07,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-11-02 22:30:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 358. [2021-11-02 22:30:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.0028011204481793) internal successors, (358), 357 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:07,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2021-11-02 22:30:07,920 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 352 [2021-11-02 22:30:07,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:07,920 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2021-11-02 22:30:07,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 142 states, 141 states have (on average 2.49645390070922) internal successors, (352), 142 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2021-11-02 22:30:07,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-02 22:30:07,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:07,922 INFO L513 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 1, 1, 1, 1] [2021-11-02 22:30:07,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-11-02 22:30:08,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:08,123 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:30:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 880106791, now seen corresponding path program 70 times [2021-11-02 22:30:08,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:08,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819391087] [2021-11-02 22:30:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:08,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12355 backedges. 0 proven. 12355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:13,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:13,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819391087] [2021-11-02 22:30:13,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819391087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:13,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083294977] [2021-11-02 22:30:13,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:30:13,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:13,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:13,283 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:13,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-02 22:30:17,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:30:17,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:17,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 961 conjuncts, 143 conjunts are in the unsatisfiable core [2021-11-02 22:30:17,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 12355 backedges. 0 proven. 12355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:18,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083294977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:18,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:18,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2021-11-02 22:30:18,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108045434] [2021-11-02 22:30:18,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2021-11-02 22:30:18,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:18,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2021-11-02 22:30:18,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5255, Invalid=15337, Unknown=0, NotChecked=0, Total=20592 [2021-11-02 22:30:18,251 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand has 144 states, 143 states have (on average 2.4965034965034967) internal successors, (357), 144 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 22:30:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:21,624 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2021-11-02 22:30:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-11-02 22:30:21,625 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 2.4965034965034967) internal successors, (357), 144 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 357 [2021-11-02 22:30:21,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:21,626 INFO L225 Difference]: With dead ends: 365 [2021-11-02 22:30:21,626 INFO L226 Difference]: Without dead ends: 364 [2021-11-02 22:30:21,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=12994, Invalid=33016, Unknown=0, NotChecked=0, Total=46010 [2021-11-02 22:30:21,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-11-02 22:30:21,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 363. [2021-11-02 22:30:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.0027624309392265) internal successors, (363), 362 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:21,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2021-11-02 22:30:21,634 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 357 [2021-11-02 22:30:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:21,634 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2021-11-02 22:30:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 2.4965034965034967) internal successors, (357), 144 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 22:30:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2021-11-02 22:30:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-02 22:30:21,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:21,636 INFO L513 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 1, 1, 1, 1] [2021-11-02 22:30:21,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-02 22:30:21,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-02 22:30:21,836 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:30:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1157127155, now seen corresponding path program 71 times [2021-11-02 22:30:21,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:21,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989196932] [2021-11-02 22:30:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:21,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12709 backedges. 0 proven. 12709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:27,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:27,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989196932] [2021-11-02 22:30:27,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989196932] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:27,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994379630] [2021-11-02 22:30:27,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:30:27,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:27,125 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:27,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-02 22:30:31,490 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-11-02 22:30:31,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:31,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 145 conjunts are in the unsatisfiable core [2021-11-02 22:30:31,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:32,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12709 backedges. 0 proven. 12709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:32,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994379630] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:32,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:32,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2021-11-02 22:30:32,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695437247] [2021-11-02 22:30:32,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2021-11-02 22:30:32,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:32,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2021-11-02 22:30:32,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5401, Invalid=15769, Unknown=0, NotChecked=0, Total=21170 [2021-11-02 22:30:32,404 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand has 146 states, 145 states have (on average 2.496551724137931) internal successors, (362), 146 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:35,861 INFO L93 Difference]: Finished difference Result 370 states and 370 transitions. [2021-11-02 22:30:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-11-02 22:30:35,862 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 145 states have (on average 2.496551724137931) internal successors, (362), 146 states have internal predecessors, (362), 0 states have call successors, (0), 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 362 [2021-11-02 22:30:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:35,863 INFO L225 Difference]: With dead ends: 370 [2021-11-02 22:30:35,863 INFO L226 Difference]: Without dead ends: 369 [2021-11-02 22:30:35,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=13357, Invalid=33949, Unknown=0, NotChecked=0, Total=47306 [2021-11-02 22:30:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-02 22:30:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 368. [2021-11-02 22:30:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.002724795640327) internal successors, (368), 367 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 22:30:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 368 transitions. [2021-11-02 22:30:35,871 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 368 transitions. Word has length 362 [2021-11-02 22:30:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:35,872 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 368 transitions. [2021-11-02 22:30:35,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 145 states have (on average 2.496551724137931) internal successors, (362), 146 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 368 transitions. [2021-11-02 22:30:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-02 22:30:35,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:35,873 INFO L513 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 1, 1, 1, 1] [2021-11-02 22:30:35,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-11-02 22:30:36,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-02 22:30:36,074 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:30:36,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash 12631207, now seen corresponding path program 72 times [2021-11-02 22:30:36,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:36,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086954428] [2021-11-02 22:30:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:36,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 13068 backedges. 0 proven. 13068 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:41,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:41,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086954428] [2021-11-02 22:30:41,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086954428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:41,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43702698] [2021-11-02 22:30:41,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:30:41,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:41,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:41,505 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:41,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-02 22:30:45,956 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-11-02 22:30:45,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:45,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 147 conjunts are in the unsatisfiable core [2021-11-02 22:30:45,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13068 backedges. 0 proven. 13068 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:46,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43702698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:46,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:46,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2021-11-02 22:30:46,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125348456] [2021-11-02 22:30:46,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2021-11-02 22:30:46,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:30:46,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2021-11-02 22:30:46,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5549, Invalid=16207, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 22:30:46,926 INFO L87 Difference]: Start difference. First operand 368 states and 368 transitions. Second operand has 148 states, 147 states have (on average 2.496598639455782) internal successors, (367), 148 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 22:30:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:50,379 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2021-11-02 22:30:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2021-11-02 22:30:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 147 states have (on average 2.496598639455782) internal successors, (367), 148 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) Word has length 367 [2021-11-02 22:30:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:50,381 INFO L225 Difference]: With dead ends: 375 [2021-11-02 22:30:50,381 INFO L226 Difference]: Without dead ends: 374 [2021-11-02 22:30:50,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=13725, Invalid=34895, Unknown=0, NotChecked=0, Total=48620 [2021-11-02 22:30:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-02 22:30:50,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 373. [2021-11-02 22:30:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.0026881720430108) internal successors, (373), 372 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:30:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2021-11-02 22:30:50,390 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 367 [2021-11-02 22:30:50,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:50,390 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2021-11-02 22:30:50,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 147 states have (on average 2.496598639455782) internal successors, (367), 148 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 22:30:50,391 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2021-11-02 22:30:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2021-11-02 22:30:50,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:50,392 INFO L513 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 1, 1, 1, 1] [2021-11-02 22:30:50,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-02 22:30:50,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-11-02 22:30:50,592 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:30:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1717349491, now seen corresponding path program 73 times [2021-11-02 22:30:50,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:30:50,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815622163] [2021-11-02 22:30:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:50,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:30:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:56,154 INFO L134 CoverageAnalysis]: Checked inductivity of 13432 backedges. 0 proven. 13432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:30:56,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:30:56,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815622163] [2021-11-02 22:30:56,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815622163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:30:56,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478374038] [2021-11-02 22:30:56,155 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:30:56,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:30:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:30:56,156 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:30:56,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-02 22:31:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:00,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 149 conjunts are in the unsatisfiable core [2021-11-02 22:31:00,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13432 backedges. 0 proven. 13432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:01,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478374038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:01,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:01,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2021-11-02 22:31:01,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747359000] [2021-11-02 22:31:01,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 150 states [2021-11-02 22:31:01,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2021-11-02 22:31:01,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5699, Invalid=16651, Unknown=0, NotChecked=0, Total=22350 [2021-11-02 22:31:01,528 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand has 150 states, 149 states have (on average 2.4966442953020134) internal successors, (372), 150 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:05,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:05,067 INFO L93 Difference]: Finished difference Result 380 states and 380 transitions. [2021-11-02 22:31:05,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2021-11-02 22:31:05,067 INFO L78 Accepts]: Start accepts. Automaton has has 150 states, 149 states have (on average 2.4966442953020134) internal successors, (372), 150 states have internal predecessors, (372), 0 states have call successors, (0), 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 372 [2021-11-02 22:31:05,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:05,069 INFO L225 Difference]: With dead ends: 380 [2021-11-02 22:31:05,069 INFO L226 Difference]: Without dead ends: 379 [2021-11-02 22:31:05,072 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=14098, Invalid=35854, Unknown=0, NotChecked=0, Total=49952 [2021-11-02 22:31:05,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-02 22:31:05,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 378. [2021-11-02 22:31:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.0026525198938991) internal successors, (378), 377 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2021-11-02 22:31:05,079 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 372 [2021-11-02 22:31:05,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:05,080 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2021-11-02 22:31:05,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 150 states, 149 states have (on average 2.4966442953020134) internal successors, (372), 150 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2021-11-02 22:31:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-11-02 22:31:05,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:05,081 INFO L513 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 1, 1, 1, 1] [2021-11-02 22:31:05,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:05,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-11-02 22:31:05,282 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:31:05,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2080029735, now seen corresponding path program 74 times [2021-11-02 22:31:05,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:05,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031625169] [2021-11-02 22:31:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:05,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 13801 backedges. 0 proven. 13801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:10,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:10,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031625169] [2021-11-02 22:31:10,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031625169] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:10,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738737881] [2021-11-02 22:31:10,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:31:10,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:10,987 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:10,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-02 22:31:15,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:31:15,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:15,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 151 conjunts are in the unsatisfiable core [2021-11-02 22:31:15,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13801 backedges. 0 proven. 13801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:16,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738737881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:16,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:16,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2021-11-02 22:31:16,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218249031] [2021-11-02 22:31:16,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2021-11-02 22:31:16,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2021-11-02 22:31:16,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5851, Invalid=17101, Unknown=0, NotChecked=0, Total=22952 [2021-11-02 22:31:16,568 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand has 152 states, 151 states have (on average 2.4966887417218544) internal successors, (377), 152 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 22:31:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:20,163 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2021-11-02 22:31:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2021-11-02 22:31:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 151 states have (on average 2.4966887417218544) internal successors, (377), 152 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 377 [2021-11-02 22:31:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:20,165 INFO L225 Difference]: With dead ends: 385 [2021-11-02 22:31:20,165 INFO L226 Difference]: Without dead ends: 384 [2021-11-02 22:31:20,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=14476, Invalid=36826, Unknown=0, NotChecked=0, Total=51302 [2021-11-02 22:31:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-02 22:31:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 383. [2021-11-02 22:31:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2021-11-02 22:31:20,175 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 377 [2021-11-02 22:31:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:20,175 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2021-11-02 22:31:20,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 151 states have (on average 2.4966887417218544) internal successors, (377), 152 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 22:31:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2021-11-02 22:31:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-02 22:31:20,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:20,177 INFO L513 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 1, 1, 1, 1] [2021-11-02 22:31:20,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-02 22:31:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:20,377 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:31:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash 83254515, now seen corresponding path program 75 times [2021-11-02 22:31:20,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:20,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798634702] [2021-11-02 22:31:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:20,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 14175 backedges. 0 proven. 14175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:26,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:26,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798634702] [2021-11-02 22:31:26,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798634702] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:26,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846193172] [2021-11-02 22:31:26,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:31:26,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:26,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:26,227 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:26,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-02 22:31:31,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-11-02 22:31:31,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:31,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 153 conjunts are in the unsatisfiable core [2021-11-02 22:31:31,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14175 backedges. 0 proven. 14175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:32,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846193172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:32,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:32,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2021-11-02 22:31:32,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745054674] [2021-11-02 22:31:32,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2021-11-02 22:31:32,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:32,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2021-11-02 22:31:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6005, Invalid=17557, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 22:31:32,110 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand has 154 states, 153 states have (on average 2.496732026143791) internal successors, (382), 154 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:35,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:35,814 INFO L93 Difference]: Finished difference Result 390 states and 390 transitions. [2021-11-02 22:31:35,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-11-02 22:31:35,815 INFO L78 Accepts]: Start accepts. Automaton has has 154 states, 153 states have (on average 2.496732026143791) internal successors, (382), 154 states have internal predecessors, (382), 0 states have call successors, (0), 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 382 [2021-11-02 22:31:35,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:35,817 INFO L225 Difference]: With dead ends: 390 [2021-11-02 22:31:35,817 INFO L226 Difference]: Without dead ends: 389 [2021-11-02 22:31:35,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=14859, Invalid=37811, Unknown=0, NotChecked=0, Total=52670 [2021-11-02 22:31:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-02 22:31:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 388. [2021-11-02 22:31:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.0025839793281655) internal successors, (388), 387 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 388 transitions. [2021-11-02 22:31:35,827 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 388 transitions. Word has length 382 [2021-11-02 22:31:35,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:35,827 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 388 transitions. [2021-11-02 22:31:35,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 153 states have (on average 2.496732026143791) internal successors, (382), 154 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:35,827 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 388 transitions. [2021-11-02 22:31:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2021-11-02 22:31:35,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:35,830 INFO L513 BasicCegarLoop]: trace histogram [77, 77, 77, 76, 76, 1, 1, 1, 1] [2021-11-02 22:31:35,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:36,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:36,032 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:31:36,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1146837927, now seen corresponding path program 76 times [2021-11-02 22:31:36,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:36,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447983269] [2021-11-02 22:31:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:36,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 14554 backedges. 0 proven. 14554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:42,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:42,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447983269] [2021-11-02 22:31:42,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447983269] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:42,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919506966] [2021-11-02 22:31:42,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:31:42,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:42,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:42,160 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:42,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-02 22:31:46,961 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:31:46,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:46,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 155 conjunts are in the unsatisfiable core [2021-11-02 22:31:46,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14554 backedges. 0 proven. 14554 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:47,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919506966] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:47,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:31:47,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2021-11-02 22:31:47,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596632041] [2021-11-02 22:31:47,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 156 states [2021-11-02 22:31:47,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:31:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2021-11-02 22:31:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6161, Invalid=18019, Unknown=0, NotChecked=0, Total=24180 [2021-11-02 22:31:47,919 INFO L87 Difference]: Start difference. First operand 388 states and 388 transitions. Second operand has 156 states, 155 states have (on average 2.496774193548387) internal successors, (387), 156 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:51,789 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2021-11-02 22:31:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-11-02 22:31:51,790 INFO L78 Accepts]: Start accepts. Automaton has has 156 states, 155 states have (on average 2.496774193548387) internal successors, (387), 156 states have internal predecessors, (387), 0 states have call successors, (0), 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 387 [2021-11-02 22:31:51,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:51,792 INFO L225 Difference]: With dead ends: 395 [2021-11-02 22:31:51,792 INFO L226 Difference]: Without dead ends: 394 [2021-11-02 22:31:51,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=15247, Invalid=38809, Unknown=0, NotChecked=0, Total=54056 [2021-11-02 22:31:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-11-02 22:31:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 393. [2021-11-02 22:31:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.0025510204081634) internal successors, (393), 392 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2021-11-02 22:31:51,803 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 387 [2021-11-02 22:31:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:51,803 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2021-11-02 22:31:51,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 156 states, 155 states have (on average 2.496774193548387) internal successors, (387), 156 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:31:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2021-11-02 22:31:51,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-02 22:31:51,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:51,805 INFO L513 BasicCegarLoop]: trace histogram [78, 78, 78, 77, 77, 1, 1, 1, 1] [2021-11-02 22:31:51,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-02 22:31:52,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable81 [2021-11-02 22:31:52,005 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:31:52,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1517458061, now seen corresponding path program 77 times [2021-11-02 22:31:52,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:31:52,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674118198] [2021-11-02 22:31:52,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:31:52,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:31:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:31:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14938 backedges. 0 proven. 14938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:31:58,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:31:58,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674118198] [2021-11-02 22:31:58,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674118198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:31:58,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417874422] [2021-11-02 22:31:58,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:31:58,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:31:58,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:31:58,240 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:31:58,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-02 22:32:03,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-11-02 22:32:03,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:03,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 157 conjunts are in the unsatisfiable core [2021-11-02 22:32:03,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14938 backedges. 0 proven. 14938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:04,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417874422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:04,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:04,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2021-11-02 22:32:04,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467365665] [2021-11-02 22:32:04,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2021-11-02 22:32:04,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2021-11-02 22:32:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6319, Invalid=18487, Unknown=0, NotChecked=0, Total=24806 [2021-11-02 22:32:04,292 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand has 158 states, 157 states have (on average 2.4968152866242037) internal successors, (392), 158 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:08,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:08,351 INFO L93 Difference]: Finished difference Result 400 states and 400 transitions. [2021-11-02 22:32:08,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2021-11-02 22:32:08,352 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 157 states have (on average 2.4968152866242037) internal successors, (392), 158 states have internal predecessors, (392), 0 states have call successors, (0), 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 392 [2021-11-02 22:32:08,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:08,353 INFO L225 Difference]: With dead ends: 400 [2021-11-02 22:32:08,353 INFO L226 Difference]: Without dead ends: 399 [2021-11-02 22:32:08,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=15640, Invalid=39820, Unknown=0, NotChecked=0, Total=55460 [2021-11-02 22:32:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-02 22:32:08,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 398. [2021-11-02 22:32:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.0025188916876575) internal successors, (398), 397 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 398 transitions. [2021-11-02 22:32:08,362 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 398 transitions. Word has length 392 [2021-11-02 22:32:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:08,362 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 398 transitions. [2021-11-02 22:32:08,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 157 states have (on average 2.4968152866242037) internal successors, (392), 158 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 398 transitions. [2021-11-02 22:32:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-02 22:32:08,364 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:08,364 INFO L513 BasicCegarLoop]: trace histogram [79, 79, 79, 78, 78, 1, 1, 1, 1] [2021-11-02 22:32:08,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:08,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:08,565 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:32:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1843750105, now seen corresponding path program 78 times [2021-11-02 22:32:08,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:08,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814165754] [2021-11-02 22:32:08,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:08,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15327 backedges. 0 proven. 15327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:14,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:14,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814165754] [2021-11-02 22:32:14,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814165754] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:14,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460301518] [2021-11-02 22:32:14,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:32:14,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:14,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:14,870 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:14,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-02 22:32:20,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-11-02 22:32:20,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 159 conjunts are in the unsatisfiable core [2021-11-02 22:32:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15327 backedges. 0 proven. 15327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:21,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460301518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:21,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:21,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2021-11-02 22:32:21,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655423814] [2021-11-02 22:32:21,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 160 states [2021-11-02 22:32:21,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2021-11-02 22:32:21,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6479, Invalid=18961, Unknown=0, NotChecked=0, Total=25440 [2021-11-02 22:32:21,088 INFO L87 Difference]: Start difference. First operand 398 states and 398 transitions. Second operand has 160 states, 159 states have (on average 2.49685534591195) internal successors, (397), 160 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 22:32:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:25,115 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2021-11-02 22:32:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-11-02 22:32:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 160 states, 159 states have (on average 2.49685534591195) internal successors, (397), 160 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 397 [2021-11-02 22:32:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:25,117 INFO L225 Difference]: With dead ends: 405 [2021-11-02 22:32:25,117 INFO L226 Difference]: Without dead ends: 404 [2021-11-02 22:32:25,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9165 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=16038, Invalid=40844, Unknown=0, NotChecked=0, Total=56882 [2021-11-02 22:32:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-02 22:32:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 403. [2021-11-02 22:32:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.0024875621890548) internal successors, (403), 402 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2021-11-02 22:32:25,126 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 397 [2021-11-02 22:32:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:25,126 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2021-11-02 22:32:25,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 160 states, 159 states have (on average 2.49685534591195) internal successors, (397), 160 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 22:32:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2021-11-02 22:32:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-02 22:32:25,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:25,128 INFO L513 BasicCegarLoop]: trace histogram [80, 80, 80, 79, 79, 1, 1, 1, 1] [2021-11-02 22:32:25,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2021-11-02 22:32:25,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:25,329 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:32:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1927929331, now seen corresponding path program 79 times [2021-11-02 22:32:25,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:25,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669212194] [2021-11-02 22:32:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:25,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15721 backedges. 0 proven. 15721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:31,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:31,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669212194] [2021-11-02 22:32:31,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669212194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:31,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901625452] [2021-11-02 22:32:31,787 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:32:31,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:31,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:31,788 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:31,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-02 22:32:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:37,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1078 conjuncts, 161 conjunts are in the unsatisfiable core [2021-11-02 22:32:37,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15721 backedges. 0 proven. 15721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:38,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901625452] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:38,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:38,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2021-11-02 22:32:38,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705869396] [2021-11-02 22:32:38,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 162 states [2021-11-02 22:32:38,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2021-11-02 22:32:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6641, Invalid=19441, Unknown=0, NotChecked=0, Total=26082 [2021-11-02 22:32:38,045 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand has 162 states, 161 states have (on average 2.4968944099378882) internal successors, (402), 162 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:42,136 INFO L93 Difference]: Finished difference Result 410 states and 410 transitions. [2021-11-02 22:32:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-11-02 22:32:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 162 states, 161 states have (on average 2.4968944099378882) internal successors, (402), 162 states have internal predecessors, (402), 0 states have call successors, (0), 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 402 [2021-11-02 22:32:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:42,139 INFO L225 Difference]: With dead ends: 410 [2021-11-02 22:32:42,139 INFO L226 Difference]: Without dead ends: 409 [2021-11-02 22:32:42,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9401 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=16441, Invalid=41881, Unknown=0, NotChecked=0, Total=58322 [2021-11-02 22:32:42,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-02 22:32:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 408. [2021-11-02 22:32:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.0024570024570025) internal successors, (408), 407 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 408 transitions. [2021-11-02 22:32:42,150 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 408 transitions. Word has length 402 [2021-11-02 22:32:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:42,150 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 408 transitions. [2021-11-02 22:32:42,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 162 states, 161 states have (on average 2.4968944099378882) internal successors, (402), 162 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 408 transitions. [2021-11-02 22:32:42,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-02 22:32:42,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:42,152 INFO L513 BasicCegarLoop]: trace histogram [81, 81, 81, 80, 80, 1, 1, 1, 1] [2021-11-02 22:32:42,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-11-02 22:32:42,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-11-02 22:32:42,353 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:32:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1217365337, now seen corresponding path program 80 times [2021-11-02 22:32:42,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:42,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485162226] [2021-11-02 22:32:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:42,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:32:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:32:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 16120 backedges. 0 proven. 16120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:49,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:32:49,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485162226] [2021-11-02 22:32:49,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485162226] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:49,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661875527] [2021-11-02 22:32:49,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:32:49,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:32:49,045 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:32:49,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-02 22:32:54,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:32:54,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:32:54,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 163 conjunts are in the unsatisfiable core [2021-11-02 22:32:54,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:32:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 16120 backedges. 0 proven. 16120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:32:55,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661875527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:32:55,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:32:55,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2021-11-02 22:32:55,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275140097] [2021-11-02 22:32:55,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2021-11-02 22:32:55,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:32:55,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2021-11-02 22:32:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6805, Invalid=19927, Unknown=0, NotChecked=0, Total=26732 [2021-11-02 22:32:55,376 INFO L87 Difference]: Start difference. First operand 408 states and 408 transitions. Second operand has 164 states, 163 states have (on average 2.496932515337423) internal successors, (407), 164 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:59,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:32:59,701 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2021-11-02 22:32:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2021-11-02 22:32:59,702 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 163 states have (on average 2.496932515337423) internal successors, (407), 164 states have internal predecessors, (407), 0 states have call successors, (0), 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 407 [2021-11-02 22:32:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:32:59,703 INFO L225 Difference]: With dead ends: 415 [2021-11-02 22:32:59,703 INFO L226 Difference]: Without dead ends: 414 [2021-11-02 22:32:59,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9640 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=16849, Invalid=42931, Unknown=0, NotChecked=0, Total=59780 [2021-11-02 22:32:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-02 22:32:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 413. [2021-11-02 22:32:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0024271844660195) internal successors, (413), 412 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 22:32:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2021-11-02 22:32:59,713 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 407 [2021-11-02 22:32:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:32:59,714 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2021-11-02 22:32:59,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 163 states have (on average 2.496932515337423) internal successors, (407), 164 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:32:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2021-11-02 22:32:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-02 22:32:59,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:32:59,716 INFO L513 BasicCegarLoop]: trace histogram [82, 82, 82, 81, 81, 1, 1, 1, 1] [2021-11-02 22:32:59,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-11-02 22:32:59,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:32:59,916 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:32:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:32:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1110200717, now seen corresponding path program 81 times [2021-11-02 22:32:59,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:32:59,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961663149] [2021-11-02 22:32:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:32:59,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16524 backedges. 0 proven. 16524 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:06,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:06,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961663149] [2021-11-02 22:33:06,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961663149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:06,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952999271] [2021-11-02 22:33:06,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:33:06,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:06,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:06,701 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:06,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-02 22:33:12,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2021-11-02 22:33:12,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:12,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 165 conjunts are in the unsatisfiable core [2021-11-02 22:33:12,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16524 backedges. 0 proven. 16524 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:13,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952999271] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:13,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:13,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2021-11-02 22:33:13,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566595056] [2021-11-02 22:33:13,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 166 states [2021-11-02 22:33:13,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2021-11-02 22:33:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6971, Invalid=20419, Unknown=0, NotChecked=0, Total=27390 [2021-11-02 22:33:13,495 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand has 166 states, 165 states have (on average 2.496969696969697) internal successors, (412), 166 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 22:33:17,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:17,862 INFO L93 Difference]: Finished difference Result 420 states and 420 transitions. [2021-11-02 22:33:17,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2021-11-02 22:33:17,862 INFO L78 Accepts]: Start accepts. Automaton has has 166 states, 165 states have (on average 2.496969696969697) internal successors, (412), 166 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) Word has length 412 [2021-11-02 22:33:17,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:17,864 INFO L225 Difference]: With dead ends: 420 [2021-11-02 22:33:17,864 INFO L226 Difference]: Without dead ends: 419 [2021-11-02 22:33:17,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9882 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=17262, Invalid=43994, Unknown=0, NotChecked=0, Total=61256 [2021-11-02 22:33:17,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-02 22:33:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2021-11-02 22:33:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.0023980815347722) internal successors, (418), 417 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2021-11-02 22:33:17,875 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 412 [2021-11-02 22:33:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:17,876 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2021-11-02 22:33:17,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 166 states, 165 states have (on average 2.496969696969697) internal successors, (412), 166 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 22:33:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2021-11-02 22:33:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-02 22:33:17,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:17,877 INFO L513 BasicCegarLoop]: trace histogram [83, 83, 83, 82, 82, 1, 1, 1, 1] [2021-11-02 22:33:17,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-11-02 22:33:18,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:18,078 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:33:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1600849369, now seen corresponding path program 82 times [2021-11-02 22:33:18,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:18,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078987908] [2021-11-02 22:33:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:18,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 16933 backedges. 0 proven. 16933 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:25,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:25,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078987908] [2021-11-02 22:33:25,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078987908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:25,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881111347] [2021-11-02 22:33:25,213 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:33:25,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:25,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:25,214 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:25,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-02 22:33:30,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:33:30,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:30,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 167 conjunts are in the unsatisfiable core [2021-11-02 22:33:30,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 16933 backedges. 0 proven. 16933 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:31,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881111347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:31,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:31,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2021-11-02 22:33:31,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767885389] [2021-11-02 22:33:31,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 168 states [2021-11-02 22:33:31,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2021-11-02 22:33:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7139, Invalid=20917, Unknown=0, NotChecked=0, Total=28056 [2021-11-02 22:33:31,848 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand has 168 states, 167 states have (on average 2.497005988023952) internal successors, (417), 168 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 22:33:36,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:36,413 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2021-11-02 22:33:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-11-02 22:33:36,414 INFO L78 Accepts]: Start accepts. Automaton has has 168 states, 167 states have (on average 2.497005988023952) internal successors, (417), 168 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 417 [2021-11-02 22:33:36,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:36,416 INFO L225 Difference]: With dead ends: 425 [2021-11-02 22:33:36,416 INFO L226 Difference]: Without dead ends: 424 [2021-11-02 22:33:36,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10127 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=17680, Invalid=45070, Unknown=0, NotChecked=0, Total=62750 [2021-11-02 22:33:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-02 22:33:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2021-11-02 22:33:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.0023696682464456) internal successors, (423), 422 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2021-11-02 22:33:36,426 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 417 [2021-11-02 22:33:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:36,426 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2021-11-02 22:33:36,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 168 states, 167 states have (on average 2.497005988023952) internal successors, (417), 168 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 22:33:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2021-11-02 22:33:36,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-02 22:33:36,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:36,428 INFO L513 BasicCegarLoop]: trace histogram [84, 84, 84, 83, 83, 1, 1, 1, 1] [2021-11-02 22:33:36,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-11-02 22:33:36,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:36,629 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:33:36,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2098388723, now seen corresponding path program 83 times [2021-11-02 22:33:36,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:36,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951410384] [2021-11-02 22:33:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:36,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:33:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17347 backedges. 0 proven. 17347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:43,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:33:43,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951410384] [2021-11-02 22:33:43,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951410384] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:43,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665191954] [2021-11-02 22:33:43,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:33:43,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:43,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:43,833 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:33:43,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-02 22:33:49,816 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-11-02 22:33:49,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:33:49,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 169 conjunts are in the unsatisfiable core [2021-11-02 22:33:49,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:33:50,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17347 backedges. 0 proven. 17347 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:33:50,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665191954] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:33:50,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:33:50,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2021-11-02 22:33:50,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375524465] [2021-11-02 22:33:50,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2021-11-02 22:33:50,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:33:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2021-11-02 22:33:50,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7309, Invalid=21421, Unknown=0, NotChecked=0, Total=28730 [2021-11-02 22:33:50,870 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand has 170 states, 169 states have (on average 2.497041420118343) internal successors, (422), 170 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:55,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:33:55,504 INFO L93 Difference]: Finished difference Result 430 states and 430 transitions. [2021-11-02 22:33:55,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-11-02 22:33:55,505 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 169 states have (on average 2.497041420118343) internal successors, (422), 170 states have internal predecessors, (422), 0 states have call successors, (0), 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 422 [2021-11-02 22:33:55,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:33:55,506 INFO L225 Difference]: With dead ends: 430 [2021-11-02 22:33:55,507 INFO L226 Difference]: Without dead ends: 429 [2021-11-02 22:33:55,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10375 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=18103, Invalid=46159, Unknown=0, NotChecked=0, Total=64262 [2021-11-02 22:33:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-02 22:33:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 428. [2021-11-02 22:33:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.0023419203747073) internal successors, (428), 427 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2021-11-02 22:33:55,516 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 422 [2021-11-02 22:33:55,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:33:55,516 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2021-11-02 22:33:55,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 169 states have (on average 2.497041420118343) internal successors, (422), 170 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:33:55,517 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2021-11-02 22:33:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2021-11-02 22:33:55,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:33:55,518 INFO L513 BasicCegarLoop]: trace histogram [85, 85, 85, 84, 84, 1, 1, 1, 1] [2021-11-02 22:33:55,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2021-11-02 22:33:55,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:33:55,719 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:33:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:33:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1405098407, now seen corresponding path program 84 times [2021-11-02 22:33:55,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:33:55,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141181640] [2021-11-02 22:33:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:33:55,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:33:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:03,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:03,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:03,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141181640] [2021-11-02 22:34:03,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141181640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:03,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790191275] [2021-11-02 22:34:03,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:34:03,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:03,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:03,049 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:03,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-11-02 22:34:09,236 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2021-11-02 22:34:09,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:34:09,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 171 conjunts are in the unsatisfiable core [2021-11-02 22:34:09,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:10,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790191275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:10,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:34:10,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2021-11-02 22:34:10,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021146093] [2021-11-02 22:34:10,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 172 states [2021-11-02 22:34:10,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2021-11-02 22:34:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7481, Invalid=21931, Unknown=0, NotChecked=0, Total=29412 [2021-11-02 22:34:10,332 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand has 172 states, 171 states have (on average 2.497076023391813) internal successors, (427), 172 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:15,307 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2021-11-02 22:34:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-11-02 22:34:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 172 states, 171 states have (on average 2.497076023391813) internal successors, (427), 172 states have internal predecessors, (427), 0 states have call successors, (0), 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 427 [2021-11-02 22:34:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:15,310 INFO L225 Difference]: With dead ends: 435 [2021-11-02 22:34:15,310 INFO L226 Difference]: Without dead ends: 434 [2021-11-02 22:34:15,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10626 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=18531, Invalid=47261, Unknown=0, NotChecked=0, Total=65792 [2021-11-02 22:34:15,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-02 22:34:15,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 433. [2021-11-02 22:34:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.0023148148148149) internal successors, (433), 432 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 22:34:15,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2021-11-02 22:34:15,321 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 427 [2021-11-02 22:34:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:15,321 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2021-11-02 22:34:15,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 172 states, 171 states have (on average 2.497076023391813) internal successors, (427), 172 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:34:15,321 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2021-11-02 22:34:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-02 22:34:15,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:15,323 INFO L513 BasicCegarLoop]: trace histogram [86, 86, 86, 85, 85, 1, 1, 1, 1] [2021-11-02 22:34:15,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:15,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:15,524 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:34:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -848334989, now seen corresponding path program 85 times [2021-11-02 22:34:15,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:34:15,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054242178] [2021-11-02 22:34:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:15,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:34:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 18190 backedges. 0 proven. 18190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:23,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:34:23,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054242178] [2021-11-02 22:34:23,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054242178] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:23,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279102733] [2021-11-02 22:34:23,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:34:23,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:34:23,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:34:23,147 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:34:23,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e20c9b4-430d-4b6a-9c2c-e42d214a2e22/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-02 22:34:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 173 conjunts are in the unsatisfiable core [2021-11-02 22:34:29,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18190 backedges. 0 proven. 18190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:30,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279102733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:34:30,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:34:30,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2021-11-02 22:34:30,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766653592] [2021-11-02 22:34:30,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 174 states [2021-11-02 22:34:30,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:34:30,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2021-11-02 22:34:30,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7655, Invalid=22447, Unknown=0, NotChecked=0, Total=30102 [2021-11-02 22:34:30,239 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand has 174 states, 173 states have (on average 2.4971098265895955) internal successors, (432), 174 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)