./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Addition02.c --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_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/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_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Addition02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/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_f1444eda-97f1-4a16-b5b7-94994a0170fe/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 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:53:49,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:53:49,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:53:49,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:53:49,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:53:49,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:53:49,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:53:49,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:53:49,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:53:49,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:53:49,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:53:49,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:53:49,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:53:49,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:53:49,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:53:49,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:53:49,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:53:49,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:53:49,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:53:49,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:53:49,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:53:49,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:53:49,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:53:49,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:53:49,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:53:49,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:53:49,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:53:49,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:53:49,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:53:49,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:53:49,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:53:49,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:53:49,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:53:49,155 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:53:49,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:53:49,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:53:49,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:53:49,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:53:49,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:53:49,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:53:49,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:53:49,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-02 22:53:49,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:53:49,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:53:49,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:53:49,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:53:49,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:53:49,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:53:49,225 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:53:49,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:53:49,225 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:53:49,226 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:53:49,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:53:49,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:53:49,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:53:49,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:53:49,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:53:49,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:53:49,228 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:53:49,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:53:49,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:53:49,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:53:49,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:53:49,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:53:49,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:53:49,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:53:49,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:53:49,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:53:49,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:53:49,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:53:49,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:53:49,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:53:49,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:53:49,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:53:49,234 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_f1444eda-97f1-4a16-b5b7-94994a0170fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 [2021-11-02 22:53:49,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:53:49,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:53:49,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:53:49,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:53:49,609 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:53:49,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/recursive/Addition02.c [2021-11-02 22:53:49,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/data/0c430d156/5d64e9b9960543d0ad507ffb7942f7fd/FLAG3208c21da [2021-11-02 22:53:50,167 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:53:50,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/sv-benchmarks/c/recursive/Addition02.c [2021-11-02 22:53:50,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/data/0c430d156/5d64e9b9960543d0ad507ffb7942f7fd/FLAG3208c21da [2021-11-02 22:53:50,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/data/0c430d156/5d64e9b9960543d0ad507ffb7942f7fd [2021-11-02 22:53:50,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:53:50,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:53:50,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:53:50,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:53:50,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:53:50,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1271d3d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50, skipping insertion in model container [2021-11-02 22:53:50,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:53:50,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:53:50,738 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_f1444eda-97f1-4a16-b5b7-94994a0170fe/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-11-02 22:53:50,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:53:50,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:53:50,766 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_f1444eda-97f1-4a16-b5b7-94994a0170fe/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-11-02 22:53:50,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:53:50,780 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:53:50,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50 WrapperNode [2021-11-02 22:53:50,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:53:50,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:53:50,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:53:50,783 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:53:50,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:53:50,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:53:50,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:53:50,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:53:50,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:53:50,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:53:50,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:53:50,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:53:50,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (1/1) ... [2021-11-02 22:53:50,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:53:50,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:50,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:53:50,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:53:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:53:50,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:53:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:53:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:53:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-11-02 22:53:50,929 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-11-02 22:53:51,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:53:51,260 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-02 22:53:51,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:53:51 BoogieIcfgContainer [2021-11-02 22:53:51,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:53:51,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:53:51,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:53:51,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:53:51,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:53:50" (1/3) ... [2021-11-02 22:53:51,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dbaae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:53:51, skipping insertion in model container [2021-11-02 22:53:51,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:53:50" (2/3) ... [2021-11-02 22:53:51,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dbaae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:53:51, skipping insertion in model container [2021-11-02 22:53:51,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:53:51" (3/3) ... [2021-11-02 22:53:51,282 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2021-11-02 22:53:51,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:53:51,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 22:53:51,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:53:51,361 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 22:53:51,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 22:53:51,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-02 22:53:51,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:53:51,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:51,406 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:51,406 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1314326780, now seen corresponding path program 1 times [2021-11-02 22:53:51,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:51,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466576735] [2021-11-02 22:53:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:51,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:51,710 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 22:53:51,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:51,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466576735] [2021-11-02 22:53:51,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466576735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:51,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:51,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:53:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915493965] [2021-11-02 22:53:51,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:51,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:51,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:51,737 INFO L87 Difference]: Start difference. First operand has 41 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:51,877 INFO L93 Difference]: Finished difference Result 73 states and 82 transitions. [2021-11-02 22:53:51,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:53:51,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-02 22:53:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:51,886 INFO L225 Difference]: With dead ends: 73 [2021-11-02 22:53:51,887 INFO L226 Difference]: Without dead ends: 60 [2021-11-02 22:53:51,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:53:51,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-02 22:53:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-11-02 22:53:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 46 states have internal predecessors, (58), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-02 22:53:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2021-11-02 22:53:51,933 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 9 [2021-11-02 22:53:51,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:51,933 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2021-11-02 22:53:51,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2021-11-02 22:53:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:53:51,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:51,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:51,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:53:51,937 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting additionErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2089424586, now seen corresponding path program 1 times [2021-11-02 22:53:51,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:51,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111966487] [2021-11-02 22:53:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:51,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:51,988 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 22:53:51,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:51,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111966487] [2021-11-02 22:53:51,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111966487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:51,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:51,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:53:51,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626186481] [2021-11-02 22:53:51,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:51,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:51,993 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:52,070 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2021-11-02 22:53:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:53:52,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:53:52,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:52,073 INFO L225 Difference]: With dead ends: 98 [2021-11-02 22:53:52,073 INFO L226 Difference]: Without dead ends: 96 [2021-11-02 22:53:52,074 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:53:52,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-02 22:53:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2021-11-02 22:53:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 76 states have internal predecessors, (104), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-02 22:53:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 122 transitions. [2021-11-02 22:53:52,091 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 122 transitions. Word has length 10 [2021-11-02 22:53:52,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:52,092 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 122 transitions. [2021-11-02 22:53:52,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 122 transitions. [2021-11-02 22:53:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:53:52,093 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:52,093 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:52,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:53:52,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 347527997, now seen corresponding path program 1 times [2021-11-02 22:53:52,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:52,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160920723] [2021-11-02 22:53:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:53:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,175 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 22:53:52,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:52,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160920723] [2021-11-02 22:53:52,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160920723] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:52,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:52,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:53:52,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205638342] [2021-11-02 22:53:52,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:53:52,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:52,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:53:52,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:53:52,186 INFO L87 Difference]: Start difference. First operand 90 states and 122 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:53:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:52,216 INFO L93 Difference]: Finished difference Result 90 states and 122 transitions. [2021-11-02 22:53:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:53:52,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-02 22:53:52,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:52,224 INFO L225 Difference]: With dead ends: 90 [2021-11-02 22:53:52,228 INFO L226 Difference]: Without dead ends: 89 [2021-11-02 22:53:52,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:53:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-02 22:53:52,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-11-02 22:53:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.537313432835821) internal successors, (103), 75 states have internal predecessors, (103), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-02 22:53:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-11-02 22:53:52,244 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 11 [2021-11-02 22:53:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:52,244 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-11-02 22:53:52,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:53:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-11-02 22:53:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 22:53:52,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:52,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:52,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:53:52,246 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting additionErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 347652798, now seen corresponding path program 1 times [2021-11-02 22:53:52,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:52,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652923576] [2021-11-02 22:53:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,305 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 22:53:52,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:52,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652923576] [2021-11-02 22:53:52,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652923576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:52,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:52,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:53:52,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404296562] [2021-11-02 22:53:52,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:52,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:52,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:52,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:52,308 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:52,435 INFO L93 Difference]: Finished difference Result 98 states and 129 transitions. [2021-11-02 22:53:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:53:52,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:53:52,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:52,445 INFO L225 Difference]: With dead ends: 98 [2021-11-02 22:53:52,445 INFO L226 Difference]: Without dead ends: 96 [2021-11-02 22:53:52,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:53:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-02 22:53:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-11-02 22:53:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 74 states have internal predecessors, (97), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-02 22:53:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2021-11-02 22:53:52,477 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 11 [2021-11-02 22:53:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:52,477 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2021-11-02 22:53:52,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,477 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2021-11-02 22:53:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:53:52,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:52,478 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:52,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:53:52,479 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash -2111533933, now seen corresponding path program 1 times [2021-11-02 22:53:52,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:52,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945594742] [2021-11-02 22:53:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-02 22:53:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,561 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 22:53:52,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:52,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945594742] [2021-11-02 22:53:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945594742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:52,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:52,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:53:52,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384983842] [2021-11-02 22:53:52,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:53:52,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:53:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:53:52,564 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:53:52,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:52,582 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2021-11-02 22:53:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:53:52,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-02 22:53:52,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:52,583 INFO L225 Difference]: With dead ends: 88 [2021-11-02 22:53:52,583 INFO L226 Difference]: Without dead ends: 68 [2021-11-02 22:53:52,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:53:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-02 22:53:52,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2021-11-02 22:53:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.380952380952381) internal successors, (58), 49 states have internal predecessors, (58), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-11-02 22:53:52,592 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 12 [2021-11-02 22:53:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:52,592 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-11-02 22:53:52,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:53:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-11-02 22:53:52,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:53:52,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:52,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:52,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:53:52,594 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting additionErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2107665076, now seen corresponding path program 1 times [2021-11-02 22:53:52,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:52,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022422047] [2021-11-02 22:53:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,622 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 22:53:52,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:52,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022422047] [2021-11-02 22:53:52,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022422047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:52,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:52,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:53:52,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420699190] [2021-11-02 22:53:52,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:53:52,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:52,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:53:52,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:53:52,625 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:52,653 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-11-02 22:53:52,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:53:52,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 22:53:52,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:52,654 INFO L225 Difference]: With dead ends: 54 [2021-11-02 22:53:52,654 INFO L226 Difference]: Without dead ends: 53 [2021-11-02 22:53:52,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:53:52,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-02 22:53:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-02 22:53:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 48 states have internal predecessors, (56), 5 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-11-02 22:53:52,661 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 12 [2021-11-02 22:53:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:52,661 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-11-02 22:53:52,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,661 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-11-02 22:53:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-02 22:53:52,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:52,662 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:52,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:53:52,663 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -586735519, now seen corresponding path program 1 times [2021-11-02 22:53:52,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:52,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937391552] [2021-11-02 22:53:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,722 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 22:53:52,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:52,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937391552] [2021-11-02 22:53:52,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937391552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:52,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:52,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:53:52,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349584400] [2021-11-02 22:53:52,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:52,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:52,725 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:52,765 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2021-11-02 22:53:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:53:52,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-02 22:53:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:52,767 INFO L225 Difference]: With dead ends: 77 [2021-11-02 22:53:52,767 INFO L226 Difference]: Without dead ends: 44 [2021-11-02 22:53:52,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:53:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-02 22:53:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-11-02 22:53:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 36 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2021-11-02 22:53:52,773 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 13 [2021-11-02 22:53:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:52,773 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2021-11-02 22:53:52,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:52,774 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2021-11-02 22:53:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:53:52,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:52,775 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:52,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:53:52,775 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:52,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:52,776 INFO L85 PathProgramCache]: Analyzing trace with hash -367240775, now seen corresponding path program 1 times [2021-11-02 22:53:52,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:52,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550183610] [2021-11-02 22:53:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,848 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 22:53:52,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:52,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550183610] [2021-11-02 22:53:52,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550183610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:52,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855149957] [2021-11-02 22:53:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:52,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:52,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:52,857 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:52,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:53:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:52,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:53:52,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:53,097 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 22:53:53,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855149957] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:53,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:53,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-02 22:53:53,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642269887] [2021-11-02 22:53:53,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:53:53,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:53:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:53:53,100 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:53,204 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-11-02 22:53:53,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:53:53,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 22:53:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:53,206 INFO L225 Difference]: With dead ends: 93 [2021-11-02 22:53:53,206 INFO L226 Difference]: Without dead ends: 91 [2021-11-02 22:53:53,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:53:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-02 22:53:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 69. [2021-11-02 22:53:53,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 62 states have internal predecessors, (73), 7 states have call successors, (7), 6 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 80 transitions. [2021-11-02 22:53:53,227 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 80 transitions. Word has length 17 [2021-11-02 22:53:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:53,227 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 80 transitions. [2021-11-02 22:53:53,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 80 transitions. [2021-11-02 22:53:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-02 22:53:53,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:53,228 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:53,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:53,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-02 22:53:53,450 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting additionErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash -2146710882, now seen corresponding path program 1 times [2021-11-02 22:53:53,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:53,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426133126] [2021-11-02 22:53:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:53,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:53,516 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 22:53:53,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:53,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426133126] [2021-11-02 22:53:53,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426133126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:53:53,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:53:53,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:53:53,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429213757] [2021-11-02 22:53:53,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:53:53,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:53:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:53:53,523 INFO L87 Difference]: Start difference. First operand 69 states and 80 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:53,563 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2021-11-02 22:53:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:53:53,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-02 22:53:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:53,564 INFO L225 Difference]: With dead ends: 70 [2021-11-02 22:53:53,564 INFO L226 Difference]: Without dead ends: 26 [2021-11-02 22:53:53,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:53:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-02 22:53:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-02 22:53:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-11-02 22:53:53,576 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 21 [2021-11-02 22:53:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:53,577 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-11-02 22:53:53,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-11-02 22:53:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:53:53,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:53,578 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:53,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:53:53,579 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:53,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash -904422026, now seen corresponding path program 2 times [2021-11-02 22:53:53,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:53,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589401197] [2021-11-02 22:53:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:53,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:53,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:53,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589401197] [2021-11-02 22:53:53,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589401197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:53,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864039672] [2021-11-02 22:53:53,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:53:53,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:53,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:53,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:53:53,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:53:53,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:53,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:53:53,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:53,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864039672] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:53,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:53,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-02 22:53:53,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540854593] [2021-11-02 22:53:53,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:53:53,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:53:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:53:53,919 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:53,979 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-11-02 22:53:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:53:53,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 22:53:53,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:53,981 INFO L225 Difference]: With dead ends: 39 [2021-11-02 22:53:53,981 INFO L226 Difference]: Without dead ends: 38 [2021-11-02 22:53:53,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:53:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-02 22:53:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-11-02 22:53:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-11-02 22:53:53,986 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2021-11-02 22:53:53,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:53,990 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-11-02 22:53:53,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:53,991 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-11-02 22:53:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 22:53:53,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:53,995 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:54,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:54,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:54,213 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:54,214 INFO L85 PathProgramCache]: Analyzing trace with hash -559557581, now seen corresponding path program 3 times [2021-11-02 22:53:54,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:54,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42611437] [2021-11-02 22:53:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:54,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:54,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:54,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42611437] [2021-11-02 22:53:54,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42611437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:54,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890658067] [2021-11-02 22:53:54,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:53:54,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:54,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:54,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:54,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:53:54,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-02 22:53:54,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:54,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:53:54,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:54,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890658067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:54,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:54,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-02 22:53:54,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103789267] [2021-11-02 22:53:54,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:53:54,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:54,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:53:54,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:53:54,583 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 11 states, 10 states have (on average 2.9) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:54,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:54,658 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-11-02 22:53:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:53:54,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-02 22:53:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:54,661 INFO L225 Difference]: With dead ends: 47 [2021-11-02 22:53:54,661 INFO L226 Difference]: Without dead ends: 46 [2021-11-02 22:53:54,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:53:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-02 22:53:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2021-11-02 22:53:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-11-02 22:53:54,672 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 33 [2021-11-02 22:53:54,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:54,677 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-11-02 22:53:54,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.9) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-11-02 22:53:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 22:53:54,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:54,685 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:54,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:54,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:54,901 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1797520880, now seen corresponding path program 4 times [2021-11-02 22:53:54,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:54,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086305272] [2021-11-02 22:53:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:54,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:54,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:55,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:55,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086305272] [2021-11-02 22:53:55,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086305272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:55,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729566343] [2021-11-02 22:53:55,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:53:55,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:55,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:55,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:55,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:53:55,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:53:55,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:55,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:53:55,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:55,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729566343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:55,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:55,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-11-02 22:53:55,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902408673] [2021-11-02 22:53:55,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:53:55,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:53:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:53:55,269 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:55,356 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2021-11-02 22:53:55,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:53:55,357 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 22:53:55,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:55,358 INFO L225 Difference]: With dead ends: 55 [2021-11-02 22:53:55,358 INFO L226 Difference]: Without dead ends: 54 [2021-11-02 22:53:55,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:53:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-02 22:53:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2021-11-02 22:53:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-02 22:53:55,363 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 41 [2021-11-02 22:53:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:55,364 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-02 22:53:55,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:55,364 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-02 22:53:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 22:53:55,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:55,366 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:55,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:55,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-02 22:53:55,580 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:55,581 INFO L85 PathProgramCache]: Analyzing trace with hash 99556013, now seen corresponding path program 5 times [2021-11-02 22:53:55,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:55,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711833811] [2021-11-02 22:53:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:55,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:55,756 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:55,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:55,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711833811] [2021-11-02 22:53:55,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711833811] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:55,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113819] [2021-11-02 22:53:55,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:53:55,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:55,759 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:55,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:53:55,859 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:53:55,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:55,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:53:55,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:56,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:56,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:56,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-11-02 22:53:56,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801633376] [2021-11-02 22:53:56,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:53:56,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:53:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:53:56,032 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 9 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:56,143 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-11-02 22:53:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:53:56,144 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 9 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-02 22:53:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:56,145 INFO L225 Difference]: With dead ends: 63 [2021-11-02 22:53:56,146 INFO L226 Difference]: Without dead ends: 62 [2021-11-02 22:53:56,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2021-11-02 22:53:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-02 22:53:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-11-02 22:53:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-02 22:53:56,151 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 49 [2021-11-02 22:53:56,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:56,151 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-02 22:53:56,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 9 states have internal predecessors, (43), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:56,152 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-02 22:53:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:53:56,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:56,154 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:56,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:56,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:53:56,378 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1738266006, now seen corresponding path program 6 times [2021-11-02 22:53:56,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:56,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59921861] [2021-11-02 22:53:56,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:56,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:56,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:56,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59921861] [2021-11-02 22:53:56,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59921861] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:56,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180964324] [2021-11-02 22:53:56,531 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:53:56,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:56,532 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:56,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:53:56,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-02 22:53:56,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:56,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:53:56,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:56,844 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:56,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180964324] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:56,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:56,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-11-02 22:53:56,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779971901] [2021-11-02 22:53:56,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:53:56,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:56,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:53:56,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:53:56,846 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 17 states, 16 states have (on average 3.125) internal successors, (50), 10 states have internal predecessors, (50), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:56,979 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-11-02 22:53:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 22:53:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.125) internal successors, (50), 10 states have internal predecessors, (50), 7 states have call successors, (7), 7 states have call predecessors, (7), 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 22:53:56,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:56,981 INFO L225 Difference]: With dead ends: 71 [2021-11-02 22:53:56,981 INFO L226 Difference]: Without dead ends: 70 [2021-11-02 22:53:56,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:53:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-02 22:53:56,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2021-11-02 22:53:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2021-11-02 22:53:56,987 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 57 [2021-11-02 22:53:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:56,989 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2021-11-02 22:53:56,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.125) internal successors, (50), 10 states have internal predecessors, (50), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2021-11-02 22:53:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 22:53:56,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:56,991 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:57,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:57,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:57,217 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:57,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1591749927, now seen corresponding path program 7 times [2021-11-02 22:53:57,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:57,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805118892] [2021-11-02 22:53:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:57,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:57,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:57,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805118892] [2021-11-02 22:53:57,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805118892] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:57,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122673887] [2021-11-02 22:53:57,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:53:57,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:57,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:57,418 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:57,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:53:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:57,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:53:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:57,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122673887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:57,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:57,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-11-02 22:53:57,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594138187] [2021-11-02 22:53:57,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 22:53:57,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 22:53:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:53:57,750 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 11 states have internal predecessors, (57), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:57,880 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-11-02 22:53:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:53:57,880 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 11 states have internal predecessors, (57), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-02 22:53:57,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:57,881 INFO L225 Difference]: With dead ends: 79 [2021-11-02 22:53:57,882 INFO L226 Difference]: Without dead ends: 78 [2021-11-02 22:53:57,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:53:57,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-02 22:53:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2021-11-02 22:53:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.015625) internal successors, (65), 64 states have internal predecessors, (65), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:57,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-11-02 22:53:57,888 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 65 [2021-11-02 22:53:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:57,889 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-11-02 22:53:57,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 11 states have internal predecessors, (57), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-11-02 22:53:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 22:53:57,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:57,890 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:57,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:58,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:58,106 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash -390061340, now seen corresponding path program 8 times [2021-11-02 22:53:58,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:58,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943466308] [2021-11-02 22:53:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:58,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:58,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:58,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943466308] [2021-11-02 22:53:58,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943466308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:58,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436312021] [2021-11-02 22:53:58,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:53:58,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:58,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:58,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:58,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:53:58,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:53:58,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:58,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:53:58,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:58,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436312021] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:58,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:58,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-11-02 22:53:58,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898635169] [2021-11-02 22:53:58,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 22:53:58,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 22:53:58,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-02 22:53:58,830 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 21 states, 20 states have (on average 3.2) internal successors, (64), 12 states have internal predecessors, (64), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:53:58,997 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-11-02 22:53:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-02 22:53:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.2) internal successors, (64), 12 states have internal predecessors, (64), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-02 22:53:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:53:58,999 INFO L225 Difference]: With dead ends: 87 [2021-11-02 22:53:58,999 INFO L226 Difference]: Without dead ends: 86 [2021-11-02 22:53:59,000 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:53:59,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-02 22:53:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2021-11-02 22:53:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-11-02 22:53:59,008 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 73 [2021-11-02 22:53:59,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:53:59,009 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-11-02 22:53:59,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.2) internal successors, (64), 12 states have internal predecessors, (64), 9 states have call successors, (9), 9 states have call predecessors, (9), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:53:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-11-02 22:53:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 22:53:59,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:53:59,010 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2021-11-02 22:53:59,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:53:59,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:53:59,229 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:53:59,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:53:59,230 INFO L85 PathProgramCache]: Analyzing trace with hash 409013153, now seen corresponding path program 9 times [2021-11-02 22:53:59,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:53:59,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195289052] [2021-11-02 22:53:59,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:53:59,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:53:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:53:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:59,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:53:59,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195289052] [2021-11-02 22:53:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195289052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:59,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972397743] [2021-11-02 22:53:59,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:53:59,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:53:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:53:59,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:53:59,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:53:59,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:53:59,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:53:59,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:53:59,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:53:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:53:59,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972397743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:53:59,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:53:59,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-11-02 22:53:59,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506110136] [2021-11-02 22:53:59,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 22:53:59,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:53:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 22:53:59,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:53:59,990 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 23 states, 22 states have (on average 3.227272727272727) internal successors, (71), 13 states have internal predecessors, (71), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:00,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:00,194 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-11-02 22:54:00,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-02 22:54:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.227272727272727) internal successors, (71), 13 states have internal predecessors, (71), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-02 22:54:00,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:00,196 INFO L225 Difference]: With dead ends: 95 [2021-11-02 22:54:00,196 INFO L226 Difference]: Without dead ends: 94 [2021-11-02 22:54:00,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=308, Invalid=748, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:54:00,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-02 22:54:00,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2021-11-02 22:54:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.0128205128205128) internal successors, (79), 78 states have internal predecessors, (79), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-11-02 22:54:00,207 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 81 [2021-11-02 22:54:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:00,208 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-11-02 22:54:00,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.227272727272727) internal successors, (71), 13 states have internal predecessors, (71), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-11-02 22:54:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:54:00,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:00,214 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:00,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:00,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:00,429 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:00,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:00,430 INFO L85 PathProgramCache]: Analyzing trace with hash 589293406, now seen corresponding path program 10 times [2021-11-02 22:54:00,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:00,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320448032] [2021-11-02 22:54:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:00,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:00,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:00,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320448032] [2021-11-02 22:54:00,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320448032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:00,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022956701] [2021-11-02 22:54:00,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:54:00,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:00,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:00,739 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:00,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:54:00,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:54:00,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:00,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:54:00,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:01,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022956701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:01,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:01,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-11-02 22:54:01,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107008930] [2021-11-02 22:54:01,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 22:54:01,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:01,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 22:54:01,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:54:01,297 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 25 states, 24 states have (on average 3.25) internal successors, (78), 14 states have internal predecessors, (78), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:01,527 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2021-11-02 22:54:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-02 22:54:01,528 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.25) internal successors, (78), 14 states have internal predecessors, (78), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-02 22:54:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:01,529 INFO L225 Difference]: With dead ends: 103 [2021-11-02 22:54:01,529 INFO L226 Difference]: Without dead ends: 102 [2021-11-02 22:54:01,530 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=366, Invalid=894, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:54:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-02 22:54:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2021-11-02 22:54:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-11-02 22:54:01,539 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 89 [2021-11-02 22:54:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:01,540 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-11-02 22:54:01,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.25) internal successors, (78), 14 states have internal predecessors, (78), 11 states have call successors, (11), 11 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:01,540 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-11-02 22:54:01,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-02 22:54:01,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:01,542 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:01,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:01,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:54:01,757 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1856391653, now seen corresponding path program 11 times [2021-11-02 22:54:01,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:01,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313558054] [2021-11-02 22:54:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:01,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:02,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:02,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313558054] [2021-11-02 22:54:02,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313558054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:02,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686656211] [2021-11-02 22:54:02,098 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:54:02,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:02,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:02,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:02,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:54:02,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-02 22:54:02,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:02,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 22:54:02,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:02,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686656211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:02,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:02,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-11-02 22:54:02,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274369008] [2021-11-02 22:54:02,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:54:02,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:02,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:54:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:54:02,658 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 15 states have internal predecessors, (85), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:02,896 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2021-11-02 22:54:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-02 22:54:02,897 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 15 states have internal predecessors, (85), 12 states have call successors, (12), 12 states have call predecessors, (12), 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 22:54:02,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:02,898 INFO L225 Difference]: With dead ends: 111 [2021-11-02 22:54:02,899 INFO L226 Difference]: Without dead ends: 110 [2021-11-02 22:54:02,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=429, Invalid=1053, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:54:02,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-02 22:54:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2021-11-02 22:54:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.0108695652173914) internal successors, (93), 92 states have internal predecessors, (93), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-11-02 22:54:02,909 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 97 [2021-11-02 22:54:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:02,910 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-11-02 22:54:02,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.269230769230769) internal successors, (85), 15 states have internal predecessors, (85), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-11-02 22:54:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-02 22:54:02,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:02,912 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:02,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:03,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:03,137 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1047230424, now seen corresponding path program 12 times [2021-11-02 22:54:03,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:03,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342380695] [2021-11-02 22:54:03,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:03,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:03,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:03,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342380695] [2021-11-02 22:54:03,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342380695] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:03,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606146219] [2021-11-02 22:54:03,522 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:54:03,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:03,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:03,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:03,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:54:03,839 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 22:54:03,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:03,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-02 22:54:03,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 576 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:04,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606146219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:04,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:04,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-11-02 22:54:04,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482726432] [2021-11-02 22:54:04,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-02 22:54:04,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-02 22:54:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=601, Unknown=0, NotChecked=0, Total=812 [2021-11-02 22:54:04,201 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 29 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 16 states have internal predecessors, (92), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:04,457 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2021-11-02 22:54:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-02 22:54:04,457 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 16 states have internal predecessors, (92), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-02 22:54:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:04,458 INFO L225 Difference]: With dead ends: 119 [2021-11-02 22:54:04,459 INFO L226 Difference]: Without dead ends: 118 [2021-11-02 22:54:04,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=497, Invalid=1225, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:54:04,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-02 22:54:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2021-11-02 22:54:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-11-02 22:54:04,468 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 105 [2021-11-02 22:54:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:04,469 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-11-02 22:54:04,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.2857142857142856) internal successors, (92), 16 states have internal predecessors, (92), 13 states have call successors, (13), 13 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-11-02 22:54:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 22:54:04,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:04,471 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:04,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:04,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:04,671 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:04,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1488071829, now seen corresponding path program 13 times [2021-11-02 22:54:04,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:04,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643196552] [2021-11-02 22:54:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:04,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:05,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:05,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643196552] [2021-11-02 22:54:05,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643196552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:05,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414717242] [2021-11-02 22:54:05,046 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:54:05,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:05,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:05,058 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:05,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:54:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:05,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-02 22:54:05,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:05,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414717242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:05,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:05,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-11-02 22:54:05,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903020891] [2021-11-02 22:54:05,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 22:54:05,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:05,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 22:54:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=689, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:54:05,728 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 31 states, 30 states have (on average 3.3) internal successors, (99), 17 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:06,016 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2021-11-02 22:54:06,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:54:06,017 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 17 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-02 22:54:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:06,018 INFO L225 Difference]: With dead ends: 127 [2021-11-02 22:54:06,018 INFO L226 Difference]: Without dead ends: 126 [2021-11-02 22:54:06,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=570, Invalid=1410, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 22:54:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-02 22:54:06,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2021-11-02 22:54:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 106 states have (on average 1.009433962264151) internal successors, (107), 106 states have internal predecessors, (107), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-11-02 22:54:06,033 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 113 [2021-11-02 22:54:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:06,033 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-11-02 22:54:06,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.3) internal successors, (99), 17 states have internal predecessors, (99), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:06,034 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-11-02 22:54:06,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:54:06,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:06,037 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:06,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:06,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-02 22:54:06,265 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:06,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1636488274, now seen corresponding path program 14 times [2021-11-02 22:54:06,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:06,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380757844] [2021-11-02 22:54:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:06,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:06,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:06,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380757844] [2021-11-02 22:54:06,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380757844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:06,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788843298] [2021-11-02 22:54:06,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:54:06,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:06,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:06,705 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:06,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:54:07,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:54:07,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:07,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-02 22:54:07,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:07,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788843298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:07,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:07,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-11-02 22:54:07,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844054451] [2021-11-02 22:54:07,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 22:54:07,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 22:54:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:54:07,400 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 33 states, 32 states have (on average 3.3125) internal successors, (106), 18 states have internal predecessors, (106), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:07,698 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2021-11-02 22:54:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-02 22:54:07,699 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.3125) internal successors, (106), 18 states have internal predecessors, (106), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-02 22:54:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:07,706 INFO L225 Difference]: With dead ends: 135 [2021-11-02 22:54:07,706 INFO L226 Difference]: Without dead ends: 134 [2021-11-02 22:54:07,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=648, Invalid=1608, Unknown=0, NotChecked=0, Total=2256 [2021-11-02 22:54:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-02 22:54:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2021-11-02 22:54:07,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 113 states have (on average 1.008849557522124) internal successors, (114), 113 states have internal predecessors, (114), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:07,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2021-11-02 22:54:07,723 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 121 [2021-11-02 22:54:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:07,724 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2021-11-02 22:54:07,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.3125) internal successors, (106), 18 states have internal predecessors, (106), 15 states have call successors, (15), 15 states have call predecessors, (15), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:07,724 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2021-11-02 22:54:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-02 22:54:07,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:07,726 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:07,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:07,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:07,948 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash 760377103, now seen corresponding path program 15 times [2021-11-02 22:54:07,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:07,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435988735] [2021-11-02 22:54:07,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:07,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:08,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:08,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435988735] [2021-11-02 22:54:08,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435988735] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:08,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893135637] [2021-11-02 22:54:08,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:54:08,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:08,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:08,422 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:08,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:54:08,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-02 22:54:08,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:08,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-02 22:54:08,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:09,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893135637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:09,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:09,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-11-02 22:54:09,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422204505] [2021-11-02 22:54:09,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 22:54:09,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:09,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 22:54:09,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 22:54:09,223 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand has 35 states, 34 states have (on average 3.323529411764706) internal successors, (113), 19 states have internal predecessors, (113), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:09,604 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2021-11-02 22:54:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-02 22:54:09,617 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.323529411764706) internal successors, (113), 19 states have internal predecessors, (113), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-02 22:54:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:09,619 INFO L225 Difference]: With dead ends: 143 [2021-11-02 22:54:09,619 INFO L226 Difference]: Without dead ends: 142 [2021-11-02 22:54:09,621 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=731, Invalid=1819, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 22:54:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-02 22:54:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2021-11-02 22:54:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 120 states have (on average 1.0083333333333333) internal successors, (121), 120 states have internal predecessors, (121), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2021-11-02 22:54:09,631 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 129 [2021-11-02 22:54:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:09,632 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2021-11-02 22:54:09,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.323529411764706) internal successors, (113), 19 states have internal predecessors, (113), 16 states have call successors, (16), 16 states have call predecessors, (16), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2021-11-02 22:54:09,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-02 22:54:09,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:09,634 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:09,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:09,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 22:54:09,849 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:09,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -479855412, now seen corresponding path program 16 times [2021-11-02 22:54:09,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:09,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013294845] [2021-11-02 22:54:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:09,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:10,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:10,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013294845] [2021-11-02 22:54:10,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013294845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:10,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610158628] [2021-11-02 22:54:10,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:54:10,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:10,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:10,393 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:10,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:54:10,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:54:10,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:10,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-02 22:54:10,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 0 proven. 1024 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:11,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610158628] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:11,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:11,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-11-02 22:54:11,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058576025] [2021-11-02 22:54:11,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 22:54:11,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:11,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 22:54:11,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=989, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 22:54:11,264 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 37 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 20 states have internal predecessors, (120), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:11,652 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2021-11-02 22:54:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-02 22:54:11,653 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 20 states have internal predecessors, (120), 17 states have call successors, (17), 17 states have call predecessors, (17), 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 22:54:11,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:11,655 INFO L225 Difference]: With dead ends: 151 [2021-11-02 22:54:11,655 INFO L226 Difference]: Without dead ends: 150 [2021-11-02 22:54:11,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=819, Invalid=2043, Unknown=0, NotChecked=0, Total=2862 [2021-11-02 22:54:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-02 22:54:11,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2021-11-02 22:54:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 127 states have (on average 1.0078740157480315) internal successors, (128), 127 states have internal predecessors, (128), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-11-02 22:54:11,666 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 137 [2021-11-02 22:54:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:11,666 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-11-02 22:54:11,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.3333333333333335) internal successors, (120), 20 states have internal predecessors, (120), 17 states have call successors, (17), 17 states have call predecessors, (17), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-11-02 22:54:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 22:54:11,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:11,669 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:11,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:11,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:11,893 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:11,893 INFO L85 PathProgramCache]: Analyzing trace with hash -31294071, now seen corresponding path program 17 times [2021-11-02 22:54:11,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:11,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841099825] [2021-11-02 22:54:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:11,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:12,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:12,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841099825] [2021-11-02 22:54:12,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841099825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:12,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103269420] [2021-11-02 22:54:12,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:54:12,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:12,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:12,463 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:12,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:54:13,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-02 22:54:13,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:13,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 22:54:13,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:13,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103269420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:13,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:13,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-11-02 22:54:13,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128585378] [2021-11-02 22:54:13,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-02 22:54:13,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-02 22:54:13,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1101, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:54:13,519 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 39 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 21 states have internal predecessors, (127), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:13,940 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2021-11-02 22:54:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-02 22:54:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 21 states have internal predecessors, (127), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-02 22:54:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:13,943 INFO L225 Difference]: With dead ends: 159 [2021-11-02 22:54:13,943 INFO L226 Difference]: Without dead ends: 158 [2021-11-02 22:54:13,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=912, Invalid=2280, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 22:54:13,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-02 22:54:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 154. [2021-11-02 22:54:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.007462686567164) internal successors, (135), 134 states have internal predecessors, (135), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-11-02 22:54:13,955 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 145 [2021-11-02 22:54:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:13,955 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-11-02 22:54:13,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.3421052631578947) internal successors, (127), 21 states have internal predecessors, (127), 18 states have call successors, (18), 18 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:13,956 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-11-02 22:54:13,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-02 22:54:13,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:13,966 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:14,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:14,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 22:54:14,186 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:14,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1256517958, now seen corresponding path program 18 times [2021-11-02 22:54:14,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:14,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417927007] [2021-11-02 22:54:14,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:14,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:14,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:14,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417927007] [2021-11-02 22:54:14,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417927007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:14,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665000675] [2021-11-02 22:54:14,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:54:14,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:14,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:14,819 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:14,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:54:15,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-02 22:54:15,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:15,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-02 22:54:15,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:15,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665000675] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:15,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:15,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-11-02 22:54:15,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524892206] [2021-11-02 22:54:15,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-02 22:54:15,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:15,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-02 22:54:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:54:15,784 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 41 states, 40 states have (on average 3.35) internal successors, (134), 22 states have internal predecessors, (134), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:16,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:16,246 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2021-11-02 22:54:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-02 22:54:16,246 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.35) internal successors, (134), 22 states have internal predecessors, (134), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-02 22:54:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:16,248 INFO L225 Difference]: With dead ends: 167 [2021-11-02 22:54:16,248 INFO L226 Difference]: Without dead ends: 166 [2021-11-02 22:54:16,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1010, Invalid=2530, Unknown=0, NotChecked=0, Total=3540 [2021-11-02 22:54:16,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-02 22:54:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2021-11-02 22:54:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 states have internal predecessors, (142), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-11-02 22:54:16,261 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 153 [2021-11-02 22:54:16,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:16,262 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-11-02 22:54:16,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.35) internal successors, (134), 22 states have internal predecessors, (134), 19 states have call successors, (19), 19 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-11-02 22:54:16,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-02 22:54:16,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:16,264 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:16,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:16,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 22:54:16,479 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash -368420861, now seen corresponding path program 19 times [2021-11-02 22:54:16,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:16,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814772595] [2021-11-02 22:54:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:16,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:17,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:17,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814772595] [2021-11-02 22:54:17,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814772595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:17,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289348773] [2021-11-02 22:54:17,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:54:17,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:17,269 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:17,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:54:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:17,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-02 22:54:17,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289348773] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:18,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-11-02 22:54:18,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465781399] [2021-11-02 22:54:18,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-02 22:54:18,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:18,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-02 22:54:18,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1343, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 22:54:18,376 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 43 states, 42 states have (on average 3.357142857142857) internal successors, (141), 23 states have internal predecessors, (141), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:18,758 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2021-11-02 22:54:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-02 22:54:18,759 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 3.357142857142857) internal successors, (141), 23 states have internal predecessors, (141), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2021-11-02 22:54:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:18,760 INFO L225 Difference]: With dead ends: 175 [2021-11-02 22:54:18,760 INFO L226 Difference]: Without dead ends: 174 [2021-11-02 22:54:18,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1113, Invalid=2793, Unknown=0, NotChecked=0, Total=3906 [2021-11-02 22:54:18,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-02 22:54:18,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2021-11-02 22:54:18,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 148 states have (on average 1.0067567567567568) internal successors, (149), 148 states have internal predecessors, (149), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-11-02 22:54:18,774 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 161 [2021-11-02 22:54:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:18,775 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-11-02 22:54:18,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 3.357142857142857) internal successors, (141), 23 states have internal predecessors, (141), 20 states have call successors, (20), 20 states have call predecessors, (20), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-11-02 22:54:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-02 22:54:18,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:18,777 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:18,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:19,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 22:54:19,001 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:19,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:19,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1324331456, now seen corresponding path program 20 times [2021-11-02 22:54:19,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:19,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125715619] [2021-11-02 22:54:19,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:19,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:19,670 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 22:54:19,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:19,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125715619] [2021-11-02 22:54:19,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125715619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:19,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831782208] [2021-11-02 22:54:19,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:54:19,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:19,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:19,673 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:19,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:54:20,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:54:20,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:20,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-02 22:54:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:20,751 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 22:54:20,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831782208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:20,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:20,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-11-02 22:54:20,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723344042] [2021-11-02 22:54:20,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-02 22:54:20,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-02 22:54:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 22:54:20,754 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 45 states, 44 states have (on average 3.3636363636363638) internal successors, (148), 24 states have internal predecessors, (148), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:21,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:21,243 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2021-11-02 22:54:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-02 22:54:21,244 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 3.3636363636363638) internal successors, (148), 24 states have internal predecessors, (148), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-02 22:54:21,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:21,245 INFO L225 Difference]: With dead ends: 183 [2021-11-02 22:54:21,246 INFO L226 Difference]: Without dead ends: 182 [2021-11-02 22:54:21,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:54:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-02 22:54:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2021-11-02 22:54:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.0064516129032257) internal successors, (156), 155 states have internal predecessors, (156), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 178 transitions. [2021-11-02 22:54:21,263 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 178 transitions. Word has length 169 [2021-11-02 22:54:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:21,264 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 178 transitions. [2021-11-02 22:54:21,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 3.3636363636363638) internal successors, (148), 24 states have internal predecessors, (148), 21 states have call successors, (21), 21 states have call predecessors, (21), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 178 transitions. [2021-11-02 22:54:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-02 22:54:21,267 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:21,267 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:21,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:21,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-02 22:54:21,493 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1072823933, now seen corresponding path program 21 times [2021-11-02 22:54:21,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:21,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548185274] [2021-11-02 22:54:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:21,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:22,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:22,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548185274] [2021-11-02 22:54:22,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548185274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:22,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538658110] [2021-11-02 22:54:22,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:54:22,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:22,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:22,313 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:22,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:54:23,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-02 22:54:23,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:23,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-02 22:54:23,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1764 backedges. 0 proven. 1764 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:23,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538658110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:23,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:23,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-11-02 22:54:23,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698639126] [2021-11-02 22:54:23,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-02 22:54:23,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-02 22:54:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1609, Unknown=0, NotChecked=0, Total=2162 [2021-11-02 22:54:23,607 INFO L87 Difference]: Start difference. First operand 178 states and 178 transitions. Second operand has 47 states, 46 states have (on average 3.369565217391304) internal successors, (155), 25 states have internal predecessors, (155), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:24,099 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2021-11-02 22:54:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 22:54:24,099 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.369565217391304) internal successors, (155), 25 states have internal predecessors, (155), 22 states have call successors, (22), 22 states have call predecessors, (22), 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 22:54:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:24,100 INFO L225 Difference]: With dead ends: 191 [2021-11-02 22:54:24,100 INFO L226 Difference]: Without dead ends: 190 [2021-11-02 22:54:24,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1334, Invalid=3358, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 22:54:24,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-02 22:54:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2021-11-02 22:54:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 162 states have (on average 1.0061728395061729) internal successors, (163), 162 states have internal predecessors, (163), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2021-11-02 22:54:24,115 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 177 [2021-11-02 22:54:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:24,116 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2021-11-02 22:54:24,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.369565217391304) internal successors, (155), 25 states have internal predecessors, (155), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2021-11-02 22:54:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-02 22:54:24,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:24,118 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:24,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:24,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 22:54:24,333 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:24,334 INFO L85 PathProgramCache]: Analyzing trace with hash -697418182, now seen corresponding path program 22 times [2021-11-02 22:54:24,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:24,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309167485] [2021-11-02 22:54:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:24,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:25,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:25,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:25,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309167485] [2021-11-02 22:54:25,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309167485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:25,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526600743] [2021-11-02 22:54:25,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:54:25,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:25,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:25,097 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:25,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:54:25,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:54:25,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:25,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-02 22:54:25,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 1936 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:26,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526600743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:26,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:26,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-11-02 22:54:26,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645183118] [2021-11-02 22:54:26,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-02 22:54:26,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-02 22:54:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=1751, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 22:54:26,387 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand has 49 states, 48 states have (on average 3.375) internal successors, (162), 26 states have internal predecessors, (162), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:26,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:26,962 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2021-11-02 22:54:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-02 22:54:26,965 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 3.375) internal successors, (162), 26 states have internal predecessors, (162), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-02 22:54:26,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:26,969 INFO L225 Difference]: With dead ends: 199 [2021-11-02 22:54:26,970 INFO L226 Difference]: Without dead ends: 198 [2021-11-02 22:54:26,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1452, Invalid=3660, Unknown=0, NotChecked=0, Total=5112 [2021-11-02 22:54:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-02 22:54:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2021-11-02 22:54:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 169 states have (on average 1.0059171597633136) internal successors, (170), 169 states have internal predecessors, (170), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-11-02 22:54:26,998 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 185 [2021-11-02 22:54:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:27,000 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-11-02 22:54:27,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 3.375) internal successors, (162), 26 states have internal predecessors, (162), 23 states have call successors, (23), 23 states have call predecessors, (23), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:27,001 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-11-02 22:54:27,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-02 22:54:27,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:27,004 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:27,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:27,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:27,229 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:27,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2126606583, now seen corresponding path program 23 times [2021-11-02 22:54:27,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:27,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322538623] [2021-11-02 22:54:27,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:27,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:28,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:28,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322538623] [2021-11-02 22:54:28,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322538623] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:28,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767162490] [2021-11-02 22:54:28,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:54:28,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:28,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:28,257 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:28,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:54:29,248 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-02 22:54:29,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:29,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-02 22:54:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:29,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767162490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:29,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:29,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-11-02 22:54:29,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323347981] [2021-11-02 22:54:29,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-02 22:54:29,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-02 22:54:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2021-11-02 22:54:29,784 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 51 states, 50 states have (on average 3.38) internal successors, (169), 27 states have internal predecessors, (169), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:30,360 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2021-11-02 22:54:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 22:54:30,361 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.38) internal successors, (169), 27 states have internal predecessors, (169), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-02 22:54:30,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:30,363 INFO L225 Difference]: With dead ends: 207 [2021-11-02 22:54:30,363 INFO L226 Difference]: Without dead ends: 206 [2021-11-02 22:54:30,364 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1575, Invalid=3975, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 22:54:30,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-02 22:54:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 202. [2021-11-02 22:54:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 176 states have (on average 1.0056818181818181) internal successors, (177), 176 states have internal predecessors, (177), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-11-02 22:54:30,379 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 193 [2021-11-02 22:54:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:30,379 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-11-02 22:54:30,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.38) internal successors, (169), 27 states have internal predecessors, (169), 24 states have call successors, (24), 24 states have call predecessors, (24), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-11-02 22:54:30,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-02 22:54:30,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:30,382 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:30,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-02 22:54:30,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:30,601 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash -129460556, now seen corresponding path program 24 times [2021-11-02 22:54:30,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:30,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702446705] [2021-11-02 22:54:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:30,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:31,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:31,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702446705] [2021-11-02 22:54:31,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702446705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:31,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578289836] [2021-11-02 22:54:31,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:54:31,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:31,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:31,664 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:31,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:54:32,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-02 22:54:32,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:32,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-02 22:54:32,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 2304 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:33,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578289836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:33,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:33,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-11-02 22:54:33,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429343252] [2021-11-02 22:54:33,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-02 22:54:33,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:33,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-02 22:54:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=2053, Unknown=0, NotChecked=0, Total=2756 [2021-11-02 22:54:33,297 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 53 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 28 states have internal predecessors, (176), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:33,913 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2021-11-02 22:54:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 22:54:33,913 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 28 states have internal predecessors, (176), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-11-02 22:54:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:33,915 INFO L225 Difference]: With dead ends: 215 [2021-11-02 22:54:33,915 INFO L226 Difference]: Without dead ends: 214 [2021-11-02 22:54:33,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1703, Invalid=4303, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:54:33,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-02 22:54:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2021-11-02 22:54:33,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 183 states have (on average 1.005464480874317) internal successors, (184), 183 states have internal predecessors, (184), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2021-11-02 22:54:33,929 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 201 [2021-11-02 22:54:33,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:33,929 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2021-11-02 22:54:33,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 3.3846153846153846) internal successors, (176), 28 states have internal predecessors, (176), 25 states have call successors, (25), 25 states have call predecessors, (25), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:33,930 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2021-11-02 22:54:33,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-02 22:54:33,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:33,932 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:33,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-02 22:54:34,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:34,133 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1432399729, now seen corresponding path program 25 times [2021-11-02 22:54:34,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:34,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512135328] [2021-11-02 22:54:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:34,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:35,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:35,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:35,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512135328] [2021-11-02 22:54:35,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512135328] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:35,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851764171] [2021-11-02 22:54:35,072 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:54:35,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:35,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:35,084 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:35,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 22:54:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:35,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:54:35,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:36,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 2500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:36,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851764171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:36,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:36,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-11-02 22:54:36,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324132265] [2021-11-02 22:54:36,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-02 22:54:36,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-02 22:54:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=2213, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 22:54:36,642 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand has 55 states, 54 states have (on average 3.388888888888889) internal successors, (183), 29 states have internal predecessors, (183), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:37,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:37,359 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2021-11-02 22:54:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-02 22:54:37,359 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 3.388888888888889) internal successors, (183), 29 states have internal predecessors, (183), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-11-02 22:54:37,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:37,361 INFO L225 Difference]: With dead ends: 223 [2021-11-02 22:54:37,361 INFO L226 Difference]: Without dead ends: 222 [2021-11-02 22:54:37,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1836, Invalid=4644, Unknown=0, NotChecked=0, Total=6480 [2021-11-02 22:54:37,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-02 22:54:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2021-11-02 22:54:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-11-02 22:54:37,379 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 209 [2021-11-02 22:54:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:37,380 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-11-02 22:54:37,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 3.388888888888889) internal successors, (183), 29 states have internal predecessors, (183), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-11-02 22:54:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-02 22:54:37,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:37,383 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:37,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-02 22:54:37,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:37,586 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:37,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:37,586 INFO L85 PathProgramCache]: Analyzing trace with hash -77153490, now seen corresponding path program 26 times [2021-11-02 22:54:37,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:37,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219207662] [2021-11-02 22:54:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:37,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:38,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:38,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219207662] [2021-11-02 22:54:38,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219207662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:38,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520206508] [2021-11-02 22:54:38,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:54:38,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:38,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:38,621 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:54:39,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:54:39,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:39,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-02 22:54:39,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 2704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:40,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520206508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:40,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:40,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-11-02 22:54:40,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983985228] [2021-11-02 22:54:40,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-02 22:54:40,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-02 22:54:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=813, Invalid=2379, Unknown=0, NotChecked=0, Total=3192 [2021-11-02 22:54:40,332 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 57 states, 56 states have (on average 3.392857142857143) internal successors, (190), 30 states have internal predecessors, (190), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:40,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:40,987 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2021-11-02 22:54:40,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-02 22:54:40,988 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.392857142857143) internal successors, (190), 30 states have internal predecessors, (190), 27 states have call successors, (27), 27 states have call predecessors, (27), 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 22:54:40,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:40,989 INFO L225 Difference]: With dead ends: 231 [2021-11-02 22:54:40,989 INFO L226 Difference]: Without dead ends: 230 [2021-11-02 22:54:40,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1974, Invalid=4998, Unknown=0, NotChecked=0, Total=6972 [2021-11-02 22:54:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-02 22:54:40,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 226. [2021-11-02 22:54:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 197 states have (on average 1.0050761421319796) internal successors, (198), 197 states have internal predecessors, (198), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 226 transitions. [2021-11-02 22:54:41,002 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 226 transitions. Word has length 217 [2021-11-02 22:54:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 226 transitions. [2021-11-02 22:54:41,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.392857142857143) internal successors, (190), 30 states have internal predecessors, (190), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 226 transitions. [2021-11-02 22:54:41,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-02 22:54:41,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:41,004 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:41,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:41,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-02 22:54:41,220 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1565017621, now seen corresponding path program 27 times [2021-11-02 22:54:41,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:41,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295497529] [2021-11-02 22:54:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:41,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:42,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:42,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295497529] [2021-11-02 22:54:42,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295497529] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:42,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227239511] [2021-11-02 22:54:42,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:54:42,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:42,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:42,405 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:42,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:54:43,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-02 22:54:43,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:43,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-02 22:54:43,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:43,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227239511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:43,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:43,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-11-02 22:54:43,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714952635] [2021-11-02 22:54:43,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-02 22:54:43,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:43,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-02 22:54:43,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=871, Invalid=2551, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 22:54:43,989 INFO L87 Difference]: Start difference. First operand 226 states and 226 transitions. Second operand has 59 states, 58 states have (on average 3.396551724137931) internal successors, (197), 31 states have internal predecessors, (197), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:44,658 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2021-11-02 22:54:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-02 22:54:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.396551724137931) internal successors, (197), 31 states have internal predecessors, (197), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-11-02 22:54:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:44,660 INFO L225 Difference]: With dead ends: 239 [2021-11-02 22:54:44,660 INFO L226 Difference]: Without dead ends: 238 [2021-11-02 22:54:44,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2117, Invalid=5365, Unknown=0, NotChecked=0, Total=7482 [2021-11-02 22:54:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-02 22:54:44,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2021-11-02 22:54:44,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 204 states have (on average 1.0049019607843137) internal successors, (205), 204 states have internal predecessors, (205), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2021-11-02 22:54:44,679 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 225 [2021-11-02 22:54:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:44,680 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2021-11-02 22:54:44,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.396551724137931) internal successors, (197), 31 states have internal predecessors, (197), 28 states have call successors, (28), 28 states have call predecessors, (28), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2021-11-02 22:54:44,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-02 22:54:44,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:44,682 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:44,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:44,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:54:44,893 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1454418856, now seen corresponding path program 28 times [2021-11-02 22:54:44,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:44,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100292938] [2021-11-02 22:54:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:44,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:46,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:46,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100292938] [2021-11-02 22:54:46,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100292938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:46,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724109044] [2021-11-02 22:54:46,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:54:46,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:46,061 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:46,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 22:54:47,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:54:47,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:47,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-02 22:54:47,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 3136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:47,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724109044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:47,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:47,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-11-02 22:54:47,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293901967] [2021-11-02 22:54:47,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-02 22:54:47,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-02 22:54:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=2729, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 22:54:47,715 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand has 61 states, 60 states have (on average 3.4) internal successors, (204), 32 states have internal predecessors, (204), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:48,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:48,478 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2021-11-02 22:54:48,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-02 22:54:48,479 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 3.4) internal successors, (204), 32 states have internal predecessors, (204), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-02 22:54:48,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:48,481 INFO L225 Difference]: With dead ends: 247 [2021-11-02 22:54:48,481 INFO L226 Difference]: Without dead ends: 246 [2021-11-02 22:54:48,482 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2265, Invalid=5745, Unknown=0, NotChecked=0, Total=8010 [2021-11-02 22:54:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-02 22:54:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 242. [2021-11-02 22:54:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 211 states have (on average 1.004739336492891) internal successors, (212), 211 states have internal predecessors, (212), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-11-02 22:54:48,504 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 233 [2021-11-02 22:54:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:48,504 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-11-02 22:54:48,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 3.4) internal successors, (204), 32 states have internal predecessors, (204), 29 states have call successors, (29), 29 states have call predecessors, (29), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-11-02 22:54:48,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-02 22:54:48,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:48,507 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:48,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:48,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-02 22:54:48,720 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:48,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1974374501, now seen corresponding path program 29 times [2021-11-02 22:54:48,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:48,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437599964] [2021-11-02 22:54:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:48,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:50,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:50,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437599964] [2021-11-02 22:54:50,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437599964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:50,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794852088] [2021-11-02 22:54:50,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:54:50,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:50,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:50,131 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:50,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 22:54:51,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-02 22:54:51,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:51,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-02 22:54:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:51,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794852088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:51,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:51,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-11-02 22:54:51,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780696486] [2021-11-02 22:54:51,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-02 22:54:51,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-02 22:54:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=993, Invalid=2913, Unknown=0, NotChecked=0, Total=3906 [2021-11-02 22:54:51,994 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 63 states, 62 states have (on average 3.403225806451613) internal successors, (211), 33 states have internal predecessors, (211), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:52,841 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2021-11-02 22:54:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:54:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.403225806451613) internal successors, (211), 33 states have internal predecessors, (211), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-11-02 22:54:52,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:52,846 INFO L225 Difference]: With dead ends: 255 [2021-11-02 22:54:52,846 INFO L226 Difference]: Without dead ends: 254 [2021-11-02 22:54:52,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2418, Invalid=6138, Unknown=0, NotChecked=0, Total=8556 [2021-11-02 22:54:52,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-02 22:54:52,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2021-11-02 22:54:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 218 states have (on average 1.0045871559633028) internal successors, (219), 218 states have internal predecessors, (219), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:52,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2021-11-02 22:54:52,870 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 241 [2021-11-02 22:54:52,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:52,871 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2021-11-02 22:54:52,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.403225806451613) internal successors, (211), 33 states have internal predecessors, (211), 30 states have call successors, (30), 30 states have call predecessors, (30), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:52,871 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2021-11-02 22:54:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-02 22:54:52,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:52,873 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:52,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:53,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-02 22:54:53,085 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:53,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1324455902, now seen corresponding path program 30 times [2021-11-02 22:54:53,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:53,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863614198] [2021-11-02 22:54:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:53,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:54,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:54,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:54,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863614198] [2021-11-02 22:54:54,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863614198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:54,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601010301] [2021-11-02 22:54:54,413 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:54:54,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:54,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:54,414 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:54,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 22:54:55,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-02 22:54:55,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:54:55,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-02 22:54:55,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:56,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601010301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:56,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:56,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-11-02 22:54:56,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782450507] [2021-11-02 22:54:56,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-02 22:54:56,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-02 22:54:56,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1057, Invalid=3103, Unknown=0, NotChecked=0, Total=4160 [2021-11-02 22:54:56,330 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand has 65 states, 64 states have (on average 3.40625) internal successors, (218), 34 states have internal predecessors, (218), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:57,146 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2021-11-02 22:54:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-02 22:54:57,146 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 3.40625) internal successors, (218), 34 states have internal predecessors, (218), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2021-11-02 22:54:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:57,148 INFO L225 Difference]: With dead ends: 263 [2021-11-02 22:54:57,148 INFO L226 Difference]: Without dead ends: 262 [2021-11-02 22:54:57,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2576, Invalid=6544, Unknown=0, NotChecked=0, Total=9120 [2021-11-02 22:54:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-02 22:54:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2021-11-02 22:54:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 225 states have (on average 1.0044444444444445) internal successors, (226), 225 states have internal predecessors, (226), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:57,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 258 transitions. [2021-11-02 22:54:57,162 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 258 transitions. Word has length 249 [2021-11-02 22:54:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:57,163 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 258 transitions. [2021-11-02 22:54:57,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 3.40625) internal successors, (218), 34 states have internal predecessors, (218), 31 states have call successors, (31), 31 states have call predecessors, (31), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:57,163 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 258 transitions. [2021-11-02 22:54:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-02 22:54:57,164 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:57,164 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:57,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:57,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 22:54:57,365 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:54:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash 221065951, now seen corresponding path program 31 times [2021-11-02 22:54:57,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:57,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587381016] [2021-11-02 22:54:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:57,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:58,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:58,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587381016] [2021-11-02 22:54:58,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587381016] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:58,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427792640] [2021-11-02 22:54:58,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:54:58,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:58,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:58,816 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:58,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 22:55:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:00,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-02 22:55:00,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:00,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427792640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:00,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:00,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2021-11-02 22:55:00,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446989975] [2021-11-02 22:55:00,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-02 22:55:00,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-02 22:55:00,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1123, Invalid=3299, Unknown=0, NotChecked=0, Total=4422 [2021-11-02 22:55:00,774 INFO L87 Difference]: Start difference. First operand 258 states and 258 transitions. Second operand has 67 states, 66 states have (on average 3.409090909090909) internal successors, (225), 35 states have internal predecessors, (225), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:01,622 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2021-11-02 22:55:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-02 22:55:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 3.409090909090909) internal successors, (225), 35 states have internal predecessors, (225), 32 states have call successors, (32), 32 states have call predecessors, (32), 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 22:55:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:01,625 INFO L225 Difference]: With dead ends: 271 [2021-11-02 22:55:01,625 INFO L226 Difference]: Without dead ends: 270 [2021-11-02 22:55:01,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2739, Invalid=6963, Unknown=0, NotChecked=0, Total=9702 [2021-11-02 22:55:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-02 22:55:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 266. [2021-11-02 22:55:01,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 232 states have (on average 1.0043103448275863) internal successors, (233), 232 states have internal predecessors, (233), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2021-11-02 22:55:01,648 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 257 [2021-11-02 22:55:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:01,648 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2021-11-02 22:55:01,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 3.409090909090909) internal successors, (225), 35 states have internal predecessors, (225), 32 states have call successors, (32), 32 states have call predecessors, (32), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2021-11-02 22:55:01,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-02 22:55:01,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:01,651 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:01,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:01,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:01,877 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -513281892, now seen corresponding path program 32 times [2021-11-02 22:55:01,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:01,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066058942] [2021-11-02 22:55:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:01,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:03,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:03,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066058942] [2021-11-02 22:55:03,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066058942] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:03,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612998186] [2021-11-02 22:55:03,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:55:03,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:03,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:03,501 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:03,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:55:04,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:55:04,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:04,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-02 22:55:04,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 4096 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:05,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612998186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:05,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:05,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2021-11-02 22:55:05,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338151585] [2021-11-02 22:55:05,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-02 22:55:05,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-02 22:55:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1191, Invalid=3501, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 22:55:05,686 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand has 69 states, 68 states have (on average 3.411764705882353) internal successors, (232), 36 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:06,598 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2021-11-02 22:55:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-02 22:55:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 3.411764705882353) internal successors, (232), 36 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-02 22:55:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:06,600 INFO L225 Difference]: With dead ends: 279 [2021-11-02 22:55:06,600 INFO L226 Difference]: Without dead ends: 278 [2021-11-02 22:55:06,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2907, Invalid=7395, Unknown=0, NotChecked=0, Total=10302 [2021-11-02 22:55:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-02 22:55:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2021-11-02 22:55:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 239 states have (on average 1.00418410041841) internal successors, (240), 239 states have internal predecessors, (240), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2021-11-02 22:55:06,623 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 265 [2021-11-02 22:55:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:06,624 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2021-11-02 22:55:06,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 3.411764705882353) internal successors, (232), 36 states have internal predecessors, (232), 33 states have call successors, (33), 33 states have call predecessors, (33), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2021-11-02 22:55:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-02 22:55:06,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:06,626 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:06,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:06,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 22:55:06,841 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:06,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:06,841 INFO L85 PathProgramCache]: Analyzing trace with hash -669277863, now seen corresponding path program 33 times [2021-11-02 22:55:06,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:06,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946113390] [2021-11-02 22:55:06,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:06,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:08,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:08,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946113390] [2021-11-02 22:55:08,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946113390] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:08,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733404988] [2021-11-02 22:55:08,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:55:08,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:08,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:08,322 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:08,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 22:55:09,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-02 22:55:09,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:09,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 70 conjunts are in the unsatisfiable core [2021-11-02 22:55:09,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:10,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733404988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:10,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:10,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2021-11-02 22:55:10,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744354564] [2021-11-02 22:55:10,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-02 22:55:10,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-02 22:55:10,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1261, Invalid=3709, Unknown=0, NotChecked=0, Total=4970 [2021-11-02 22:55:10,567 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand has 71 states, 70 states have (on average 3.414285714285714) internal successors, (239), 37 states have internal predecessors, (239), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:11,825 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2021-11-02 22:55:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-02 22:55:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 3.414285714285714) internal successors, (239), 37 states have internal predecessors, (239), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-02 22:55:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:11,828 INFO L225 Difference]: With dead ends: 287 [2021-11-02 22:55:11,829 INFO L226 Difference]: Without dead ends: 286 [2021-11-02 22:55:11,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3080, Invalid=7840, Unknown=0, NotChecked=0, Total=10920 [2021-11-02 22:55:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-02 22:55:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2021-11-02 22:55:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 246 states have (on average 1.0040650406504066) internal successors, (247), 246 states have internal predecessors, (247), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2021-11-02 22:55:11,856 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 273 [2021-11-02 22:55:11,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:11,857 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2021-11-02 22:55:11,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 3.414285714285714) internal successors, (239), 37 states have internal predecessors, (239), 34 states have call successors, (34), 34 states have call predecessors, (34), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2021-11-02 22:55:11,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-02 22:55:11,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:11,860 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:11,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:12,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-02 22:55:12,073 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:12,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash -291158762, now seen corresponding path program 34 times [2021-11-02 22:55:12,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:12,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017957682] [2021-11-02 22:55:12,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:12,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:13,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:13,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017957682] [2021-11-02 22:55:13,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017957682] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:13,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73583919] [2021-11-02 22:55:13,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:55:13,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:13,810 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 22:55:15,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:55:15,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:15,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-02 22:55:15,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 4624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:16,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73583919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:16,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:16,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2021-11-02 22:55:16,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607859368] [2021-11-02 22:55:16,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2021-11-02 22:55:16,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-11-02 22:55:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1333, Invalid=3923, Unknown=0, NotChecked=0, Total=5256 [2021-11-02 22:55:16,141 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand has 73 states, 72 states have (on average 3.4166666666666665) internal successors, (246), 38 states have internal predecessors, (246), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:17,197 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2021-11-02 22:55:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-02 22:55:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 3.4166666666666665) internal successors, (246), 38 states have internal predecessors, (246), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2021-11-02 22:55:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:17,212 INFO L225 Difference]: With dead ends: 295 [2021-11-02 22:55:17,212 INFO L226 Difference]: Without dead ends: 294 [2021-11-02 22:55:17,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3258, Invalid=8298, Unknown=0, NotChecked=0, Total=11556 [2021-11-02 22:55:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-02 22:55:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 290. [2021-11-02 22:55:17,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 253 states have (on average 1.0039525691699605) internal successors, (254), 253 states have internal predecessors, (254), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 290 transitions. [2021-11-02 22:55:17,239 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 290 transitions. Word has length 281 [2021-11-02 22:55:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:17,239 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 290 transitions. [2021-11-02 22:55:17,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 72 states have (on average 3.4166666666666665) internal successors, (246), 38 states have internal predecessors, (246), 35 states have call successors, (35), 35 states have call predecessors, (35), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 290 transitions. [2021-11-02 22:55:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-02 22:55:17,242 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:17,242 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:17,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:17,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:17,465 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:17,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1969347539, now seen corresponding path program 35 times [2021-11-02 22:55:17,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:17,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588847582] [2021-11-02 22:55:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:17,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:19,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:19,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588847582] [2021-11-02 22:55:19,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588847582] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:19,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420862359] [2021-11-02 22:55:19,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:55:19,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:19,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:19,290 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:19,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 22:55:20,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-02 22:55:20,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:20,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-02 22:55:20,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:21,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420862359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:21,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:21,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2021-11-02 22:55:21,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251494717] [2021-11-02 22:55:21,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-02 22:55:21,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:21,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-02 22:55:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=4143, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 22:55:21,697 INFO L87 Difference]: Start difference. First operand 290 states and 290 transitions. Second operand has 75 states, 74 states have (on average 3.418918918918919) internal successors, (253), 39 states have internal predecessors, (253), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:23,066 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2021-11-02 22:55:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-02 22:55:23,066 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 3.418918918918919) internal successors, (253), 39 states have internal predecessors, (253), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2021-11-02 22:55:23,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:23,071 INFO L225 Difference]: With dead ends: 303 [2021-11-02 22:55:23,071 INFO L226 Difference]: Without dead ends: 302 [2021-11-02 22:55:23,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1855 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3441, Invalid=8769, Unknown=0, NotChecked=0, Total=12210 [2021-11-02 22:55:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-02 22:55:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 298. [2021-11-02 22:55:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 260 states have (on average 1.0038461538461538) internal successors, (261), 260 states have internal predecessors, (261), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 298 transitions. [2021-11-02 22:55:23,101 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 298 transitions. Word has length 289 [2021-11-02 22:55:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:23,103 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 298 transitions. [2021-11-02 22:55:23,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 3.418918918918919) internal successors, (253), 39 states have internal predecessors, (253), 36 states have call successors, (36), 36 states have call predecessors, (36), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:23,104 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 298 transitions. [2021-11-02 22:55:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-02 22:55:23,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:23,106 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:23,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:23,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-02 22:55:23,321 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash 263087504, now seen corresponding path program 36 times [2021-11-02 22:55:23,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:23,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359859043] [2021-11-02 22:55:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:23,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:25,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:25,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359859043] [2021-11-02 22:55:25,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359859043] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:25,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898549530] [2021-11-02 22:55:25,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:55:25,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:25,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:25,051 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:25,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 22:55:26,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-02 22:55:26,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:26,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-02 22:55:26,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 5184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:27,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898549530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:27,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:27,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2021-11-02 22:55:27,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642336210] [2021-11-02 22:55:27,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-02 22:55:27,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-02 22:55:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=4369, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 22:55:27,902 INFO L87 Difference]: Start difference. First operand 298 states and 298 transitions. Second operand has 77 states, 76 states have (on average 3.4210526315789473) internal successors, (260), 40 states have internal predecessors, (260), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:29,172 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2021-11-02 22:55:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-02 22:55:29,173 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 3.4210526315789473) internal successors, (260), 40 states have internal predecessors, (260), 37 states have call successors, (37), 37 states have call predecessors, (37), 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 22:55:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:29,175 INFO L225 Difference]: With dead ends: 311 [2021-11-02 22:55:29,175 INFO L226 Difference]: Without dead ends: 310 [2021-11-02 22:55:29,177 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3629, Invalid=9253, Unknown=0, NotChecked=0, Total=12882 [2021-11-02 22:55:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-02 22:55:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 306. [2021-11-02 22:55:29,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 267 states have (on average 1.00374531835206) internal successors, (268), 267 states have internal predecessors, (268), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2021-11-02 22:55:29,209 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 297 [2021-11-02 22:55:29,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:29,210 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2021-11-02 22:55:29,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 3.4210526315789473) internal successors, (260), 40 states have internal predecessors, (260), 37 states have call successors, (37), 37 states have call predecessors, (37), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:29,210 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2021-11-02 22:55:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-02 22:55:29,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:29,213 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:29,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:29,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-02 22:55:29,441 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1276648883, now seen corresponding path program 37 times [2021-11-02 22:55:29,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:29,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818882274] [2021-11-02 22:55:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:29,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:31,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:31,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818882274] [2021-11-02 22:55:31,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818882274] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:31,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78675933] [2021-11-02 22:55:31,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:55:31,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:31,470 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:31,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 22:55:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:33,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 78 conjunts are in the unsatisfiable core [2021-11-02 22:55:33,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:34,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 5476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:34,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78675933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:34,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:34,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2021-11-02 22:55:34,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74340476] [2021-11-02 22:55:34,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-02 22:55:34,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-02 22:55:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1561, Invalid=4601, Unknown=0, NotChecked=0, Total=6162 [2021-11-02 22:55:34,189 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand has 79 states, 78 states have (on average 3.423076923076923) internal successors, (267), 41 states have internal predecessors, (267), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:35,399 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2021-11-02 22:55:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-11-02 22:55:35,400 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 3.423076923076923) internal successors, (267), 41 states have internal predecessors, (267), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2021-11-02 22:55:35,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:35,402 INFO L225 Difference]: With dead ends: 319 [2021-11-02 22:55:35,402 INFO L226 Difference]: Without dead ends: 318 [2021-11-02 22:55:35,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3822, Invalid=9750, Unknown=0, NotChecked=0, Total=13572 [2021-11-02 22:55:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-02 22:55:35,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2021-11-02 22:55:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 274 states have (on average 1.0036496350364963) internal successors, (275), 274 states have internal predecessors, (275), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2021-11-02 22:55:35,431 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 305 [2021-11-02 22:55:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:35,432 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2021-11-02 22:55:35,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 3.423076923076923) internal successors, (267), 41 states have internal predecessors, (267), 38 states have call successors, (38), 38 states have call predecessors, (38), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2021-11-02 22:55:35,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2021-11-02 22:55:35,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:35,435 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:35,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:35,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:35,661 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:35,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1419030006, now seen corresponding path program 38 times [2021-11-02 22:55:35,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:35,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169284392] [2021-11-02 22:55:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:35,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:37,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:37,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169284392] [2021-11-02 22:55:37,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169284392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:37,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623246517] [2021-11-02 22:55:37,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:55:37,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:37,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:37,571 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:37,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 22:55:39,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:55:39,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:39,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 80 conjunts are in the unsatisfiable core [2021-11-02 22:55:39,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 5776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:40,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623246517] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:40,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:40,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2021-11-02 22:55:40,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788095372] [2021-11-02 22:55:40,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-11-02 22:55:40,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:40,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-11-02 22:55:40,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1641, Invalid=4839, Unknown=0, NotChecked=0, Total=6480 [2021-11-02 22:55:40,478 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand has 81 states, 80 states have (on average 3.425) internal successors, (274), 42 states have internal predecessors, (274), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:41,791 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2021-11-02 22:55:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-02 22:55:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 3.425) internal successors, (274), 42 states have internal predecessors, (274), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2021-11-02 22:55:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:41,793 INFO L225 Difference]: With dead ends: 327 [2021-11-02 22:55:41,794 INFO L226 Difference]: Without dead ends: 326 [2021-11-02 22:55:41,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2185 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4020, Invalid=10260, Unknown=0, NotChecked=0, Total=14280 [2021-11-02 22:55:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-02 22:55:41,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 322. [2021-11-02 22:55:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 281 states have (on average 1.00355871886121) internal successors, (282), 281 states have internal predecessors, (282), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2021-11-02 22:55:41,828 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 313 [2021-11-02 22:55:41,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:41,828 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2021-11-02 22:55:41,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 80 states have (on average 3.425) internal successors, (274), 42 states have internal predecessors, (274), 39 states have call successors, (39), 39 states have call predecessors, (39), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:41,829 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2021-11-02 22:55:41,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-02 22:55:41,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:41,831 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:41,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-02 22:55:42,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:42,045 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:42,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:42,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1835682617, now seen corresponding path program 39 times [2021-11-02 22:55:42,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:42,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900980231] [2021-11-02 22:55:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:42,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:42,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:44,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:44,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900980231] [2021-11-02 22:55:44,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900980231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:44,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951124936] [2021-11-02 22:55:44,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:55:44,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:44,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:44,093 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:44,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 22:55:46,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-02 22:55:46,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:46,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-02 22:55:46,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6084 backedges. 0 proven. 6084 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:47,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951124936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:47,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:47,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2021-11-02 22:55:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545233944] [2021-11-02 22:55:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-11-02 22:55:47,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-11-02 22:55:47,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=5083, Unknown=0, NotChecked=0, Total=6806 [2021-11-02 22:55:47,121 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand has 83 states, 82 states have (on average 3.426829268292683) internal successors, (281), 43 states have internal predecessors, (281), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:48,542 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2021-11-02 22:55:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-02 22:55:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 3.426829268292683) internal successors, (281), 43 states have internal predecessors, (281), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2021-11-02 22:55:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:48,544 INFO L225 Difference]: With dead ends: 335 [2021-11-02 22:55:48,544 INFO L226 Difference]: Without dead ends: 334 [2021-11-02 22:55:48,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4223, Invalid=10783, Unknown=0, NotChecked=0, Total=15006 [2021-11-02 22:55:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-02 22:55:48,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 330. [2021-11-02 22:55:48,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 288 states have (on average 1.0034722222222223) internal successors, (289), 288 states have internal predecessors, (289), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2021-11-02 22:55:48,574 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 321 [2021-11-02 22:55:48,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:48,574 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2021-11-02 22:55:48,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 3.426829268292683) internal successors, (281), 43 states have internal predecessors, (281), 40 states have call successors, (40), 40 states have call predecessors, (40), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:48,575 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2021-11-02 22:55:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-02 22:55:48,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:48,577 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:48,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:48,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:48,784 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:48,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1489242756, now seen corresponding path program 40 times [2021-11-02 22:55:48,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:48,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023373163] [2021-11-02 22:55:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:48,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:50,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:50,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023373163] [2021-11-02 22:55:50,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023373163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:50,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432816086] [2021-11-02 22:55:50,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:55:50,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:50,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:50,899 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:50,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 22:55:53,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:55:53,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:55:53,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-02 22:55:53,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:55:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 6400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:54,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432816086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:54,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:55:54,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2021-11-02 22:55:54,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73878527] [2021-11-02 22:55:54,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-02 22:55:54,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-02 22:55:54,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1807, Invalid=5333, Unknown=0, NotChecked=0, Total=7140 [2021-11-02 22:55:54,034 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand has 85 states, 84 states have (on average 3.4285714285714284) internal successors, (288), 44 states have internal predecessors, (288), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:55,373 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2021-11-02 22:55:55,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-11-02 22:55:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 3.4285714285714284) internal successors, (288), 44 states have internal predecessors, (288), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2021-11-02 22:55:55,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:55,378 INFO L225 Difference]: With dead ends: 343 [2021-11-02 22:55:55,378 INFO L226 Difference]: Without dead ends: 342 [2021-11-02 22:55:55,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2420 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4431, Invalid=11319, Unknown=0, NotChecked=0, Total=15750 [2021-11-02 22:55:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-02 22:55:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2021-11-02 22:55:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 295 states have (on average 1.0033898305084745) internal successors, (296), 295 states have internal predecessors, (296), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2021-11-02 22:55:55,410 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 329 [2021-11-02 22:55:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:55,411 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2021-11-02 22:55:55,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 84 states have (on average 3.4285714285714284) internal successors, (288), 44 states have internal predecessors, (288), 41 states have call successors, (41), 41 states have call predecessors, (41), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:55:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2021-11-02 22:55:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-02 22:55:55,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:55,414 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:55,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-02 22:55:55,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-02 22:55:55,637 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:55:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:55,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1079202625, now seen corresponding path program 41 times [2021-11-02 22:55:55,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:55,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705425131] [2021-11-02 22:55:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:55,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:55:57,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:57,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705425131] [2021-11-02 22:55:57,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705425131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:55:57,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339421314] [2021-11-02 22:55:57,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:55:57,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:55:57,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:55:57,738 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:55:57,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 22:56:00,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-02 22:56:00,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:00,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 86 conjunts are in the unsatisfiable core [2021-11-02 22:56:00,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339421314] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:00,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:00,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2021-11-02 22:56:00,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191752868] [2021-11-02 22:56:00,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2021-11-02 22:56:00,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-11-02 22:56:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=5589, Unknown=0, NotChecked=0, Total=7482 [2021-11-02 22:56:00,974 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand has 87 states, 86 states have (on average 3.4302325581395348) internal successors, (295), 45 states have internal predecessors, (295), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:02,564 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2021-11-02 22:56:02,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-11-02 22:56:02,565 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 3.4302325581395348) internal successors, (295), 45 states have internal predecessors, (295), 42 states have call successors, (42), 42 states have call predecessors, (42), 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 22:56:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:02,567 INFO L225 Difference]: With dead ends: 351 [2021-11-02 22:56:02,567 INFO L226 Difference]: Without dead ends: 350 [2021-11-02 22:56:02,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4644, Invalid=11868, Unknown=0, NotChecked=0, Total=16512 [2021-11-02 22:56:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-02 22:56:02,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 346. [2021-11-02 22:56:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 302 states have (on average 1.0033112582781456) internal successors, (303), 302 states have internal predecessors, (303), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 346 transitions. [2021-11-02 22:56:02,602 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 346 transitions. Word has length 337 [2021-11-02 22:56:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:02,602 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 346 transitions. [2021-11-02 22:56:02,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 3.4302325581395348) internal successors, (295), 45 states have internal predecessors, (295), 42 states have call successors, (42), 42 states have call predecessors, (42), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 346 transitions. [2021-11-02 22:56:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-02 22:56:02,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:02,605 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:02,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-02 22:56:02,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 22:56:02,821 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash -559902978, now seen corresponding path program 42 times [2021-11-02 22:56:02,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:02,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410544373] [2021-11-02 22:56:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:02,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:05,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:05,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410544373] [2021-11-02 22:56:05,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410544373] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:05,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052179649] [2021-11-02 22:56:05,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:56:05,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:05,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:05,006 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:05,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 22:56:07,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-02 22:56:07,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:07,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-02 22:56:07,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7056 backedges. 0 proven. 7056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:08,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052179649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:08,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:08,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2021-11-02 22:56:08,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339861776] [2021-11-02 22:56:08,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-02 22:56:08,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-02 22:56:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1981, Invalid=5851, Unknown=0, NotChecked=0, Total=7832 [2021-11-02 22:56:08,269 INFO L87 Difference]: Start difference. First operand 346 states and 346 transitions. Second operand has 89 states, 88 states have (on average 3.4318181818181817) internal successors, (302), 46 states have internal predecessors, (302), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:09,725 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2021-11-02 22:56:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-02 22:56:09,726 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 3.4318181818181817) internal successors, (302), 46 states have internal predecessors, (302), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 345 [2021-11-02 22:56:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:09,728 INFO L225 Difference]: With dead ends: 359 [2021-11-02 22:56:09,728 INFO L226 Difference]: Without dead ends: 358 [2021-11-02 22:56:09,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2667 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4862, Invalid=12430, Unknown=0, NotChecked=0, Total=17292 [2021-11-02 22:56:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-02 22:56:09,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 354. [2021-11-02 22:56:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 309 states have (on average 1.0032362459546926) internal successors, (310), 309 states have internal predecessors, (310), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 354 transitions. [2021-11-02 22:56:09,754 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 354 transitions. Word has length 345 [2021-11-02 22:56:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:09,755 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 354 transitions. [2021-11-02 22:56:09,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 3.4318181818181817) internal successors, (302), 46 states have internal predecessors, (302), 43 states have call successors, (43), 43 states have call predecessors, (43), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:09,755 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 354 transitions. [2021-11-02 22:56:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-02 22:56:09,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:09,758 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:09,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:09,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 22:56:09,973 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash 470334907, now seen corresponding path program 43 times [2021-11-02 22:56:09,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:09,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991584306] [2021-11-02 22:56:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:09,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:12,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:12,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991584306] [2021-11-02 22:56:12,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991584306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:12,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310795416] [2021-11-02 22:56:12,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:56:12,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:12,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:12,296 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:12,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 22:56:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:14,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-02 22:56:14,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7396 backedges. 0 proven. 7396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:15,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310795416] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:15,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:15,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2021-11-02 22:56:15,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813990700] [2021-11-02 22:56:15,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-02 22:56:15,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:15,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-02 22:56:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2071, Invalid=6119, Unknown=0, NotChecked=0, Total=8190 [2021-11-02 22:56:15,655 INFO L87 Difference]: Start difference. First operand 354 states and 354 transitions. Second operand has 91 states, 90 states have (on average 3.433333333333333) internal successors, (309), 47 states have internal predecessors, (309), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:17,370 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2021-11-02 22:56:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-11-02 22:56:17,370 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 3.433333333333333) internal successors, (309), 47 states have internal predecessors, (309), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2021-11-02 22:56:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:17,373 INFO L225 Difference]: With dead ends: 367 [2021-11-02 22:56:17,373 INFO L226 Difference]: Without dead ends: 366 [2021-11-02 22:56:17,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=5085, Invalid=13005, Unknown=0, NotChecked=0, Total=18090 [2021-11-02 22:56:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-02 22:56:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 362. [2021-11-02 22:56:17,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 316 states have (on average 1.0031645569620253) internal successors, (317), 316 states have internal predecessors, (317), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2021-11-02 22:56:17,412 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 353 [2021-11-02 22:56:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:17,413 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2021-11-02 22:56:17,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 3.433333333333333) internal successors, (309), 47 states have internal predecessors, (309), 44 states have call successors, (44), 44 states have call predecessors, (44), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:17,413 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2021-11-02 22:56:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2021-11-02 22:56:17,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:17,416 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:17,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-02 22:56:17,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:17,632 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 870899576, now seen corresponding path program 44 times [2021-11-02 22:56:17,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:17,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83641235] [2021-11-02 22:56:17,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:17,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:20,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:20,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83641235] [2021-11-02 22:56:20,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83641235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:20,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044312361] [2021-11-02 22:56:20,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:56:20,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:20,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:20,152 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:20,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 22:56:22,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:56:22,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:22,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 92 conjunts are in the unsatisfiable core [2021-11-02 22:56:22,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7744 backedges. 0 proven. 7744 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:23,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044312361] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:23,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:23,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2021-11-02 22:56:23,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496670446] [2021-11-02 22:56:23,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-02 22:56:23,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:23,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-02 22:56:23,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2163, Invalid=6393, Unknown=0, NotChecked=0, Total=8556 [2021-11-02 22:56:23,601 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand has 93 states, 92 states have (on average 3.4347826086956523) internal successors, (316), 48 states have internal predecessors, (316), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:25,425 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2021-11-02 22:56:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-11-02 22:56:25,426 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 92 states have (on average 3.4347826086956523) internal successors, (316), 48 states have internal predecessors, (316), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 361 [2021-11-02 22:56:25,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:25,428 INFO L225 Difference]: With dead ends: 375 [2021-11-02 22:56:25,428 INFO L226 Difference]: Without dead ends: 374 [2021-11-02 22:56:25,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2926 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5313, Invalid=13593, Unknown=0, NotChecked=0, Total=18906 [2021-11-02 22:56:25,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-02 22:56:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 370. [2021-11-02 22:56:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 323 states have (on average 1.0030959752321982) internal successors, (324), 323 states have internal predecessors, (324), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 370 transitions. [2021-11-02 22:56:25,464 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 370 transitions. Word has length 361 [2021-11-02 22:56:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:25,464 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 370 transitions. [2021-11-02 22:56:25,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 92 states have (on average 3.4347826086956523) internal successors, (316), 48 states have internal predecessors, (316), 45 states have call successors, (45), 45 states have call predecessors, (45), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 370 transitions. [2021-11-02 22:56:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-02 22:56:25,468 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:25,468 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:25,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-02 22:56:25,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:25,685 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1264716747, now seen corresponding path program 45 times [2021-11-02 22:56:25,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:25,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922637179] [2021-11-02 22:56:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:25,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:28,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:28,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922637179] [2021-11-02 22:56:28,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922637179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:28,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192263125] [2021-11-02 22:56:28,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:56:28,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:28,263 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:28,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 22:56:31,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-02 22:56:31,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:31,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 94 conjunts are in the unsatisfiable core [2021-11-02 22:56:31,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8100 backedges. 0 proven. 8100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:32,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192263125] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:32,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:32,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2021-11-02 22:56:32,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707280581] [2021-11-02 22:56:32,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-02 22:56:32,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-02 22:56:32,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2257, Invalid=6673, Unknown=0, NotChecked=0, Total=8930 [2021-11-02 22:56:32,099 INFO L87 Difference]: Start difference. First operand 370 states and 370 transitions. Second operand has 95 states, 94 states have (on average 3.4361702127659575) internal successors, (323), 49 states have internal predecessors, (323), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:33,833 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2021-11-02 22:56:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-02 22:56:33,833 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 3.4361702127659575) internal successors, (323), 49 states have internal predecessors, (323), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 369 [2021-11-02 22:56:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:33,835 INFO L225 Difference]: With dead ends: 383 [2021-11-02 22:56:33,835 INFO L226 Difference]: Without dead ends: 382 [2021-11-02 22:56:33,837 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3060 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5546, Invalid=14194, Unknown=0, NotChecked=0, Total=19740 [2021-11-02 22:56:33,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-02 22:56:33,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 378. [2021-11-02 22:56:33,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 330 states have (on average 1.003030303030303) internal successors, (331), 330 states have internal predecessors, (331), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 378 transitions. [2021-11-02 22:56:33,869 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 378 transitions. Word has length 369 [2021-11-02 22:56:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:33,870 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 378 transitions. [2021-11-02 22:56:33,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 3.4361702127659575) internal successors, (323), 49 states have internal predecessors, (323), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 378 transitions. [2021-11-02 22:56:33,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-11-02 22:56:33,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:33,873 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:33,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-11-02 22:56:34,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-11-02 22:56:34,089 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:34,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2139421682, now seen corresponding path program 46 times [2021-11-02 22:56:34,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:34,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133994741] [2021-11-02 22:56:34,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:34,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:37,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:37,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133994741] [2021-11-02 22:56:37,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133994741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:37,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232250376] [2021-11-02 22:56:37,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:56:37,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:37,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:37,187 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:37,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 22:56:40,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:56:40,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:40,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-02 22:56:40,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 0 proven. 8464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:41,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232250376] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:41,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:41,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2021-11-02 22:56:41,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259292196] [2021-11-02 22:56:41,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-02 22:56:41,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:41,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-02 22:56:41,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2353, Invalid=6959, Unknown=0, NotChecked=0, Total=9312 [2021-11-02 22:56:41,137 INFO L87 Difference]: Start difference. First operand 378 states and 378 transitions. Second operand has 97 states, 96 states have (on average 3.4375) internal successors, (330), 50 states have internal predecessors, (330), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:42,990 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2021-11-02 22:56:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-02 22:56:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 3.4375) internal successors, (330), 50 states have internal predecessors, (330), 47 states have call successors, (47), 47 states have call predecessors, (47), 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 22:56:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:42,992 INFO L225 Difference]: With dead ends: 391 [2021-11-02 22:56:42,992 INFO L226 Difference]: Without dead ends: 390 [2021-11-02 22:56:42,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5784, Invalid=14808, Unknown=0, NotChecked=0, Total=20592 [2021-11-02 22:56:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-11-02 22:56:43,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 386. [2021-11-02 22:56:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 337 states have (on average 1.002967359050445) internal successors, (338), 337 states have internal predecessors, (338), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2021-11-02 22:56:43,032 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 377 [2021-11-02 22:56:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:43,033 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2021-11-02 22:56:43,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 3.4375) internal successors, (330), 50 states have internal predecessors, (330), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2021-11-02 22:56:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-02 22:56:43,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:43,037 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:43,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-11-02 22:56:43,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:43,265 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:43,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash -923076945, now seen corresponding path program 47 times [2021-11-02 22:56:43,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:43,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290197429] [2021-11-02 22:56:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:43,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:45,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:45,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290197429] [2021-11-02 22:56:45,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290197429] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:45,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748810078] [2021-11-02 22:56:45,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:56:45,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:45,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:45,932 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:45,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 22:56:49,051 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-02 22:56:49,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:49,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-02 22:56:49,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:50,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748810078] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:50,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:50,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2021-11-02 22:56:50,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439035298] [2021-11-02 22:56:50,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2021-11-02 22:56:50,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:50,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-11-02 22:56:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2451, Invalid=7251, Unknown=0, NotChecked=0, Total=9702 [2021-11-02 22:56:50,083 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 51 states have internal predecessors, (337), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:56:52,277 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2021-11-02 22:56:52,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-11-02 22:56:52,277 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 51 states have internal predecessors, (337), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2021-11-02 22:56:52,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:56:52,280 INFO L225 Difference]: With dead ends: 399 [2021-11-02 22:56:52,280 INFO L226 Difference]: Without dead ends: 398 [2021-11-02 22:56:52,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3337 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=6027, Invalid=15435, Unknown=0, NotChecked=0, Total=21462 [2021-11-02 22:56:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-02 22:56:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 394. [2021-11-02 22:56:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 344 states have (on average 1.002906976744186) internal successors, (345), 344 states have internal predecessors, (345), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 394 transitions. [2021-11-02 22:56:52,330 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 394 transitions. Word has length 385 [2021-11-02 22:56:52,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:56:52,330 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 394 transitions. [2021-11-02 22:56:52,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 98 states have (on average 3.438775510204082) internal successors, (337), 51 states have internal predecessors, (337), 48 states have call successors, (48), 48 states have call predecessors, (48), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:56:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 394 transitions. [2021-11-02 22:56:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-11-02 22:56:52,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:56:52,334 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2021-11-02 22:56:52,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-11-02 22:56:52,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:52,557 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:56:52,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:56:52,558 INFO L85 PathProgramCache]: Analyzing trace with hash 408740972, now seen corresponding path program 48 times [2021-11-02 22:56:52,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:56:52,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787550284] [2021-11-02 22:56:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:56:52,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:56:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:56:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:55,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:56:55,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787550284] [2021-11-02 22:56:55,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787550284] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:55,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285362064] [2021-11-02 22:56:55,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:56:55,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:56:55,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:56:55,713 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:56:55,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 22:56:59,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-02 22:56:59,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:56:59,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 100 conjunts are in the unsatisfiable core [2021-11-02 22:56:59,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:56:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9216 backedges. 0 proven. 9216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:56:59,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285362064] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:56:59,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:56:59,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2021-11-02 22:56:59,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29773198] [2021-11-02 22:56:59,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-11-02 22:56:59,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:56:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-11-02 22:56:59,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2551, Invalid=7549, Unknown=0, NotChecked=0, Total=10100 [2021-11-02 22:56:59,965 INFO L87 Difference]: Start difference. First operand 394 states and 394 transitions. Second operand has 101 states, 100 states have (on average 3.44) internal successors, (344), 52 states have internal predecessors, (344), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:01,956 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2021-11-02 22:57:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-02 22:57:01,956 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 3.44) internal successors, (344), 52 states have internal predecessors, (344), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 393 [2021-11-02 22:57:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:57:01,958 INFO L225 Difference]: With dead ends: 407 [2021-11-02 22:57:01,958 INFO L226 Difference]: Without dead ends: 406 [2021-11-02 22:57:01,960 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3480 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6275, Invalid=16075, Unknown=0, NotChecked=0, Total=22350 [2021-11-02 22:57:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-02 22:57:02,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 402. [2021-11-02 22:57:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 351 states have (on average 1.002849002849003) internal successors, (352), 351 states have internal predecessors, (352), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 402 transitions. [2021-11-02 22:57:02,003 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 402 transitions. Word has length 393 [2021-11-02 22:57:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:57:02,004 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 402 transitions. [2021-11-02 22:57:02,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 3.44) internal successors, (344), 52 states have internal predecessors, (344), 49 states have call successors, (49), 49 states have call predecessors, (49), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:02,004 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 402 transitions. [2021-11-02 22:57:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-11-02 22:57:02,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:57:02,007 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:02,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-11-02 22:57:02,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-02 22:57:02,231 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:57:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1208468777, now seen corresponding path program 49 times [2021-11-02 22:57:02,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:02,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963537291] [2021-11-02 22:57:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:02,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:05,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:05,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963537291] [2021-11-02 22:57:05,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963537291] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:05,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852187567] [2021-11-02 22:57:05,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:57:05,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:05,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:05,131 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:05,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 22:57:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:08,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 102 conjunts are in the unsatisfiable core [2021-11-02 22:57:08,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9604 backedges. 0 proven. 9604 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:09,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852187567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:09,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:09,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2021-11-02 22:57:09,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488458775] [2021-11-02 22:57:09,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-02 22:57:09,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-02 22:57:09,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2653, Invalid=7853, Unknown=0, NotChecked=0, Total=10506 [2021-11-02 22:57:09,451 INFO L87 Difference]: Start difference. First operand 402 states and 402 transitions. Second operand has 103 states, 102 states have (on average 3.4411764705882355) internal successors, (351), 53 states have internal predecessors, (351), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:11,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:11,769 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2021-11-02 22:57:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-02 22:57:11,773 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 102 states have (on average 3.4411764705882355) internal successors, (351), 53 states have internal predecessors, (351), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 401 [2021-11-02 22:57:11,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:57:11,777 INFO L225 Difference]: With dead ends: 415 [2021-11-02 22:57:11,777 INFO L226 Difference]: Without dead ends: 414 [2021-11-02 22:57:11,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3626 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6528, Invalid=16728, Unknown=0, NotChecked=0, Total=23256 [2021-11-02 22:57:11,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-02 22:57:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 410. [2021-11-02 22:57:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 358 states have (on average 1.0027932960893855) internal successors, (359), 358 states have internal predecessors, (359), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2021-11-02 22:57:11,849 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 401 [2021-11-02 22:57:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:57:11,850 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2021-11-02 22:57:11,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 102 states have (on average 3.4411764705882355) internal successors, (351), 53 states have internal predecessors, (351), 50 states have call successors, (50), 50 states have call predecessors, (50), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2021-11-02 22:57:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-02 22:57:11,855 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:57:11,856 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:11,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:12,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:12,070 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:57:12,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2057791258, now seen corresponding path program 50 times [2021-11-02 22:57:12,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:12,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035926192] [2021-11-02 22:57:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:12,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:15,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:15,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035926192] [2021-11-02 22:57:15,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035926192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:15,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796807990] [2021-11-02 22:57:15,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:57:15,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:15,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:15,657 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:15,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 22:57:19,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:57:19,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:57:19,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 104 conjunts are in the unsatisfiable core [2021-11-02 22:57:19,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 10000 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:20,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796807990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:20,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:20,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2021-11-02 22:57:20,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854844320] [2021-11-02 22:57:20,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-11-02 22:57:20,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-11-02 22:57:20,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2757, Invalid=8163, Unknown=0, NotChecked=0, Total=10920 [2021-11-02 22:57:20,358 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand has 105 states, 104 states have (on average 3.4423076923076925) internal successors, (358), 54 states have internal predecessors, (358), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:22,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:22,550 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2021-11-02 22:57:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-11-02 22:57:22,550 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 104 states have (on average 3.4423076923076925) internal successors, (358), 54 states have internal predecessors, (358), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2021-11-02 22:57:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:57:22,552 INFO L225 Difference]: With dead ends: 423 [2021-11-02 22:57:22,552 INFO L226 Difference]: Without dead ends: 422 [2021-11-02 22:57:22,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=6786, Invalid=17394, Unknown=0, NotChecked=0, Total=24180 [2021-11-02 22:57:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-02 22:57:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 418. [2021-11-02 22:57:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 365 states have (on average 1.0027397260273974) internal successors, (366), 365 states have internal predecessors, (366), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:22,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2021-11-02 22:57:22,587 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 409 [2021-11-02 22:57:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:57:22,588 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2021-11-02 22:57:22,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 104 states have (on average 3.4423076923076925) internal successors, (358), 54 states have internal predecessors, (358), 51 states have call successors, (51), 51 states have call predecessors, (51), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2021-11-02 22:57:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-02 22:57:22,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:57:22,591 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:22,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:22,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-02 22:57:22,792 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:57:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1353473955, now seen corresponding path program 51 times [2021-11-02 22:57:22,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:22,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285850790] [2021-11-02 22:57:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:22,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:25,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:25,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285850790] [2021-11-02 22:57:25,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285850790] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:25,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631657202] [2021-11-02 22:57:25,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:57:25,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:25,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:25,922 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:25,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 22:57:29,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-02 22:57:29,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:57:29,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 106 conjunts are in the unsatisfiable core [2021-11-02 22:57:29,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10404 backedges. 0 proven. 10404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:30,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631657202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:30,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:30,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2021-11-02 22:57:30,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118897502] [2021-11-02 22:57:30,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2021-11-02 22:57:30,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-11-02 22:57:30,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2863, Invalid=8479, Unknown=0, NotChecked=0, Total=11342 [2021-11-02 22:57:30,726 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand has 107 states, 106 states have (on average 3.443396226415094) internal successors, (365), 55 states have internal predecessors, (365), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:33,408 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2021-11-02 22:57:33,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-02 22:57:33,409 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 106 states have (on average 3.443396226415094) internal successors, (365), 55 states have internal predecessors, (365), 52 states have call successors, (52), 52 states have call predecessors, (52), 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 22:57:33,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:57:33,411 INFO L225 Difference]: With dead ends: 431 [2021-11-02 22:57:33,411 INFO L226 Difference]: Without dead ends: 430 [2021-11-02 22:57:33,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3927 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7049, Invalid=18073, Unknown=0, NotChecked=0, Total=25122 [2021-11-02 22:57:33,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-02 22:57:33,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 426. [2021-11-02 22:57:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 372 states have (on average 1.0026881720430108) internal successors, (373), 372 states have internal predecessors, (373), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 426 transitions. [2021-11-02 22:57:33,460 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 426 transitions. Word has length 417 [2021-11-02 22:57:33,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:57:33,460 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 426 transitions. [2021-11-02 22:57:33,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 106 states have (on average 3.443396226415094) internal successors, (365), 55 states have internal predecessors, (365), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 426 transitions. [2021-11-02 22:57:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-11-02 22:57:33,465 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:57:33,466 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:33,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-02 22:57:33,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-02 22:57:33,689 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:57:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2103449952, now seen corresponding path program 52 times [2021-11-02 22:57:33,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:33,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566118956] [2021-11-02 22:57:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:33,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:37,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:37,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566118956] [2021-11-02 22:57:37,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566118956] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:37,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529951393] [2021-11-02 22:57:37,168 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:57:37,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:37,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:37,169 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:37,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 22:57:40,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:57:40,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:57:40,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 108 conjunts are in the unsatisfiable core [2021-11-02 22:57:40,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10816 backedges. 0 proven. 10816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:41,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529951393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:41,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:41,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2021-11-02 22:57:41,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030429329] [2021-11-02 22:57:41,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2021-11-02 22:57:41,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-11-02 22:57:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2971, Invalid=8801, Unknown=0, NotChecked=0, Total=11772 [2021-11-02 22:57:41,701 INFO L87 Difference]: Start difference. First operand 426 states and 426 transitions. Second operand has 109 states, 108 states have (on average 3.4444444444444446) internal successors, (372), 56 states have internal predecessors, (372), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:43,857 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2021-11-02 22:57:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:57:43,858 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 108 states have (on average 3.4444444444444446) internal successors, (372), 56 states have internal predecessors, (372), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 425 [2021-11-02 22:57:43,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:57:43,859 INFO L225 Difference]: With dead ends: 439 [2021-11-02 22:57:43,860 INFO L226 Difference]: Without dead ends: 438 [2021-11-02 22:57:43,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7317, Invalid=18765, Unknown=0, NotChecked=0, Total=26082 [2021-11-02 22:57:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-02 22:57:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 434. [2021-11-02 22:57:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 379 states have (on average 1.0026385224274406) internal successors, (380), 379 states have internal predecessors, (380), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 434 transitions. [2021-11-02 22:57:43,894 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 434 transitions. Word has length 425 [2021-11-02 22:57:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:57:43,895 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 434 transitions. [2021-11-02 22:57:43,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 108 states have (on average 3.4444444444444446) internal successors, (372), 56 states have internal predecessors, (372), 53 states have call successors, (53), 53 states have call predecessors, (53), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 434 transitions. [2021-11-02 22:57:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-02 22:57:43,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:57:43,898 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:43,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-11-02 22:57:44,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:57:44,113 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:57:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 835765789, now seen corresponding path program 53 times [2021-11-02 22:57:44,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:44,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505028870] [2021-11-02 22:57:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:44,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:47,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:47,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505028870] [2021-11-02 22:57:47,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505028870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:47,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890743242] [2021-11-02 22:57:47,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:57:47,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:47,898 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:47,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 22:57:52,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-02 22:57:52,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:57:52,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 110 conjunts are in the unsatisfiable core [2021-11-02 22:57:52,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:57:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11236 backedges. 0 proven. 11236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:53,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890743242] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:53,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:57:53,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2021-11-02 22:57:53,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707026133] [2021-11-02 22:57:53,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 111 states [2021-11-02 22:57:53,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:57:53,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-11-02 22:57:53,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=9129, Unknown=0, NotChecked=0, Total=12210 [2021-11-02 22:57:53,209 INFO L87 Difference]: Start difference. First operand 434 states and 434 transitions. Second operand has 111 states, 110 states have (on average 3.4454545454545453) internal successors, (379), 57 states have internal predecessors, (379), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:57:55,714 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2021-11-02 22:57:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-02 22:57:55,715 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 110 states have (on average 3.4454545454545453) internal successors, (379), 57 states have internal predecessors, (379), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-11-02 22:57:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:57:55,717 INFO L225 Difference]: With dead ends: 447 [2021-11-02 22:57:55,717 INFO L226 Difference]: Without dead ends: 446 [2021-11-02 22:57:55,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4240 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=7590, Invalid=19470, Unknown=0, NotChecked=0, Total=27060 [2021-11-02 22:57:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-02 22:57:55,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 442. [2021-11-02 22:57:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 386 states have (on average 1.0025906735751295) internal successors, (387), 386 states have internal predecessors, (387), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 442 transitions. [2021-11-02 22:57:55,752 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 442 transitions. Word has length 433 [2021-11-02 22:57:55,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:57:55,753 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 442 transitions. [2021-11-02 22:57:55,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 111 states, 110 states have (on average 3.4454545454545453) internal successors, (379), 57 states have internal predecessors, (379), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:57:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 442 transitions. [2021-11-02 22:57:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-02 22:57:55,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:57:55,756 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2021-11-02 22:57:55,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-11-02 22:57:55,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:55,973 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:57:55,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:57:55,974 INFO L85 PathProgramCache]: Analyzing trace with hash -413440550, now seen corresponding path program 54 times [2021-11-02 22:57:55,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:57:55,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147436389] [2021-11-02 22:57:55,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:57:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:57:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:57:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:57:59,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:57:59,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147436389] [2021-11-02 22:57:59,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147436389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:57:59,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526199528] [2021-11-02 22:57:59,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:57:59,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:57:59,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:57:59,713 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:57:59,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 22:58:03,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-02 22:58:03,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:58:03,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 112 conjunts are in the unsatisfiable core [2021-11-02 22:58:03,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 11664 backedges. 0 proven. 11664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:05,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526199528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:05,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:58:05,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2021-11-02 22:58:05,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183620361] [2021-11-02 22:58:05,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-11-02 22:58:05,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-11-02 22:58:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3193, Invalid=9463, Unknown=0, NotChecked=0, Total=12656 [2021-11-02 22:58:05,150 INFO L87 Difference]: Start difference. First operand 442 states and 442 transitions. Second operand has 113 states, 112 states have (on average 3.4464285714285716) internal successors, (386), 58 states have internal predecessors, (386), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:07,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:07,594 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2021-11-02 22:58:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-11-02 22:58:07,595 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 3.4464285714285716) internal successors, (386), 58 states have internal predecessors, (386), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2021-11-02 22:58:07,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:07,597 INFO L225 Difference]: With dead ends: 455 [2021-11-02 22:58:07,597 INFO L226 Difference]: Without dead ends: 454 [2021-11-02 22:58:07,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4401 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7868, Invalid=20188, Unknown=0, NotChecked=0, Total=28056 [2021-11-02 22:58:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-02 22:58:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 450. [2021-11-02 22:58:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 393 states have (on average 1.0025445292620865) internal successors, (394), 393 states have internal predecessors, (394), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:07,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 450 transitions. [2021-11-02 22:58:07,631 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 450 transitions. Word has length 441 [2021-11-02 22:58:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:07,632 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 450 transitions. [2021-11-02 22:58:07,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 3.4464285714285716) internal successors, (386), 58 states have internal predecessors, (386), 55 states have call successors, (55), 55 states have call predecessors, (55), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 450 transitions. [2021-11-02 22:58:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2021-11-02 22:58:07,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:07,635 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:07,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:07,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:07,841 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:58:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1784477847, now seen corresponding path program 55 times [2021-11-02 22:58:07,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:07,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895694887] [2021-11-02 22:58:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:07,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:11,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:11,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895694887] [2021-11-02 22:58:11,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895694887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:11,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374381441] [2021-11-02 22:58:11,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:58:11,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:58:11,329 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:58:11,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 22:58:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:15,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 114 conjunts are in the unsatisfiable core [2021-11-02 22:58:15,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 0 proven. 12100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:16,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374381441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:16,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:58:16,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2021-11-02 22:58:16,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720282394] [2021-11-02 22:58:16,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2021-11-02 22:58:16,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-11-02 22:58:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3307, Invalid=9803, Unknown=0, NotChecked=0, Total=13110 [2021-11-02 22:58:16,374 INFO L87 Difference]: Start difference. First operand 450 states and 450 transitions. Second operand has 115 states, 114 states have (on average 3.4473684210526314) internal successors, (393), 59 states have internal predecessors, (393), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:18,849 INFO L93 Difference]: Finished difference Result 463 states and 463 transitions. [2021-11-02 22:58:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-02 22:58:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 114 states have (on average 3.4473684210526314) internal successors, (393), 59 states have internal predecessors, (393), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 449 [2021-11-02 22:58:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:18,851 INFO L225 Difference]: With dead ends: 463 [2021-11-02 22:58:18,851 INFO L226 Difference]: Without dead ends: 462 [2021-11-02 22:58:18,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4565 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=8151, Invalid=20919, Unknown=0, NotChecked=0, Total=29070 [2021-11-02 22:58:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-02 22:58:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 458. [2021-11-02 22:58:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 400 states have (on average 1.0025) internal successors, (401), 400 states have internal predecessors, (401), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:18,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 458 transitions. [2021-11-02 22:58:18,890 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 458 transitions. Word has length 449 [2021-11-02 22:58:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:18,890 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 458 transitions. [2021-11-02 22:58:18,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 114 states have (on average 3.4473684210526314) internal successors, (393), 59 states have internal predecessors, (393), 56 states have call successors, (56), 56 states have call predecessors, (56), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 458 transitions. [2021-11-02 22:58:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2021-11-02 22:58:18,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:18,892 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:18,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-11-02 22:58:19,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-11-02 22:58:19,097 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:58:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash -634225068, now seen corresponding path program 56 times [2021-11-02 22:58:19,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:19,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461181220] [2021-11-02 22:58:19,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:19,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 0 proven. 12544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:22,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:22,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461181220] [2021-11-02 22:58:22,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461181220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:22,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039230547] [2021-11-02 22:58:22,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:58:22,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:22,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:58:22,712 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:58:22,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 22:58:26,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:58:26,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:58:26,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 116 conjunts are in the unsatisfiable core [2021-11-02 22:58:26,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:27,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12544 backedges. 0 proven. 12544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:27,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039230547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:27,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:58:27,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2021-11-02 22:58:27,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131639482] [2021-11-02 22:58:27,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2021-11-02 22:58:27,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2021-11-02 22:58:27,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3423, Invalid=10149, Unknown=0, NotChecked=0, Total=13572 [2021-11-02 22:58:27,850 INFO L87 Difference]: Start difference. First operand 458 states and 458 transitions. Second operand has 117 states, 116 states have (on average 3.4482758620689653) internal successors, (400), 60 states have internal predecessors, (400), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:30,291 INFO L93 Difference]: Finished difference Result 471 states and 471 transitions. [2021-11-02 22:58:30,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-11-02 22:58:30,292 INFO L78 Accepts]: Start accepts. Automaton has has 117 states, 116 states have (on average 3.4482758620689653) internal successors, (400), 60 states have internal predecessors, (400), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 457 [2021-11-02 22:58:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:30,294 INFO L225 Difference]: With dead ends: 471 [2021-11-02 22:58:30,294 INFO L226 Difference]: Without dead ends: 470 [2021-11-02 22:58:30,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4732 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8439, Invalid=21663, Unknown=0, NotChecked=0, Total=30102 [2021-11-02 22:58:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-02 22:58:30,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 466. [2021-11-02 22:58:30,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 407 states have (on average 1.0024570024570025) internal successors, (408), 407 states have internal predecessors, (408), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:30,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 466 transitions. [2021-11-02 22:58:30,341 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 466 transitions. Word has length 457 [2021-11-02 22:58:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:30,342 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 466 transitions. [2021-11-02 22:58:30,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 116 states have (on average 3.4482758620689653) internal successors, (400), 60 states have internal predecessors, (400), 57 states have call successors, (57), 57 states have call predecessors, (57), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:30,342 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 466 transitions. [2021-11-02 22:58:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-02 22:58:30,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:30,345 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:30,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-02 22:58:30,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:30,545 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:58:30,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1455884527, now seen corresponding path program 57 times [2021-11-02 22:58:30,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:30,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819458531] [2021-11-02 22:58:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:30,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 0 proven. 12996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:34,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:34,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819458531] [2021-11-02 22:58:34,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819458531] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:34,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397847819] [2021-11-02 22:58:34,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:58:34,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:34,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:58:34,249 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:58:34,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-02 22:58:38,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-02 22:58:38,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:58:38,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 118 conjunts are in the unsatisfiable core [2021-11-02 22:58:38,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12996 backedges. 0 proven. 12996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:39,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397847819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:39,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:58:39,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2021-11-02 22:58:39,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828592833] [2021-11-02 22:58:39,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2021-11-02 22:58:39,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:39,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2021-11-02 22:58:39,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3541, Invalid=10501, Unknown=0, NotChecked=0, Total=14042 [2021-11-02 22:58:39,738 INFO L87 Difference]: Start difference. First operand 466 states and 466 transitions. Second operand has 119 states, 118 states have (on average 3.4491525423728815) internal successors, (407), 61 states have internal predecessors, (407), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:42,263 INFO L93 Difference]: Finished difference Result 479 states and 479 transitions. [2021-11-02 22:58:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2021-11-02 22:58:42,263 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 3.4491525423728815) internal successors, (407), 61 states have internal predecessors, (407), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 465 [2021-11-02 22:58:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:42,265 INFO L225 Difference]: With dead ends: 479 [2021-11-02 22:58:42,265 INFO L226 Difference]: Without dead ends: 478 [2021-11-02 22:58:42,267 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 465 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4902 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8732, Invalid=22420, Unknown=0, NotChecked=0, Total=31152 [2021-11-02 22:58:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-02 22:58:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 474. [2021-11-02 22:58:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 414 states have (on average 1.002415458937198) internal successors, (415), 414 states have internal predecessors, (415), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 474 transitions. [2021-11-02 22:58:42,302 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 474 transitions. Word has length 465 [2021-11-02 22:58:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:42,303 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 474 transitions. [2021-11-02 22:58:42,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 3.4491525423728815) internal successors, (407), 61 states have internal predecessors, (407), 58 states have call successors, (58), 58 states have call predecessors, (58), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 474 transitions. [2021-11-02 22:58:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-02 22:58:42,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:42,305 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:42,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:42,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-11-02 22:58:42,506 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:58:42,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:42,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1664261426, now seen corresponding path program 58 times [2021-11-02 22:58:42,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:42,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761099315] [2021-11-02 22:58:42,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:42,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 0 proven. 13456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:46,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:46,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761099315] [2021-11-02 22:58:46,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761099315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:46,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787635169] [2021-11-02 22:58:46,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:58:46,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:46,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:58:46,500 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:58:46,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-02 22:58:50,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:58:50,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:58:50,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 120 conjunts are in the unsatisfiable core [2021-11-02 22:58:50,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:58:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13456 backedges. 0 proven. 13456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:51,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787635169] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:51,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:58:51,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2021-11-02 22:58:51,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690188655] [2021-11-02 22:58:51,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2021-11-02 22:58:51,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:58:51,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2021-11-02 22:58:51,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3661, Invalid=10859, Unknown=0, NotChecked=0, Total=14520 [2021-11-02 22:58:51,999 INFO L87 Difference]: Start difference. First operand 474 states and 474 transitions. Second operand has 121 states, 120 states have (on average 3.45) internal successors, (414), 62 states have internal predecessors, (414), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:54,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:58:54,666 INFO L93 Difference]: Finished difference Result 487 states and 487 transitions. [2021-11-02 22:58:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2021-11-02 22:58:54,666 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 120 states have (on average 3.45) internal successors, (414), 62 states have internal predecessors, (414), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 473 [2021-11-02 22:58:54,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:58:54,668 INFO L225 Difference]: With dead ends: 487 [2021-11-02 22:58:54,668 INFO L226 Difference]: Without dead ends: 486 [2021-11-02 22:58:54,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5075 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9030, Invalid=23190, Unknown=0, NotChecked=0, Total=32220 [2021-11-02 22:58:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-11-02 22:58:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 482. [2021-11-02 22:58:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 421 states have (on average 1.002375296912114) internal successors, (422), 421 states have internal predecessors, (422), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2021-11-02 22:58:54,734 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 473 [2021-11-02 22:58:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:58:54,735 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2021-11-02 22:58:54,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 120 states have (on average 3.45) internal successors, (414), 62 states have internal predecessors, (414), 59 states have call successors, (59), 59 states have call predecessors, (59), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:58:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2021-11-02 22:58:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-02 22:58:54,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:58:54,737 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2021-11-02 22:58:54,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-02 22:58:54,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-11-02 22:58:54,937 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:58:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:58:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -850607733, now seen corresponding path program 59 times [2021-11-02 22:58:54,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:58:54,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121621294] [2021-11-02 22:58:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:58:54,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:58:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:58:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13924 backedges. 0 proven. 13924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:58:58,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:58:58,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121621294] [2021-11-02 22:58:58,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121621294] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:58:58,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026923887] [2021-11-02 22:58:58,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:58:58,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:58:58,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:58:58,866 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:58:58,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-02 22:59:03,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-02 22:59:03,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:03,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 122 conjunts are in the unsatisfiable core [2021-11-02 22:59:03,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 13924 backedges. 0 proven. 13924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:04,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026923887] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:04,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:04,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2021-11-02 22:59:04,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971212267] [2021-11-02 22:59:04,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 123 states [2021-11-02 22:59:04,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:04,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2021-11-02 22:59:04,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3783, Invalid=11223, Unknown=0, NotChecked=0, Total=15006 [2021-11-02 22:59:04,572 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand has 123 states, 122 states have (on average 3.4508196721311477) internal successors, (421), 63 states have internal predecessors, (421), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:07,467 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2021-11-02 22:59:07,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2021-11-02 22:59:07,468 INFO L78 Accepts]: Start accepts. Automaton has has 123 states, 122 states have (on average 3.4508196721311477) internal successors, (421), 63 states have internal predecessors, (421), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 481 [2021-11-02 22:59:07,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:07,470 INFO L225 Difference]: With dead ends: 495 [2021-11-02 22:59:07,470 INFO L226 Difference]: Without dead ends: 494 [2021-11-02 22:59:07,473 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5251 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9333, Invalid=23973, Unknown=0, NotChecked=0, Total=33306 [2021-11-02 22:59:07,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-02 22:59:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 490. [2021-11-02 22:59:07,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 428 states have (on average 1.0023364485981308) internal successors, (429), 428 states have internal predecessors, (429), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 490 transitions. [2021-11-02 22:59:07,522 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 490 transitions. Word has length 481 [2021-11-02 22:59:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:07,523 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 490 transitions. [2021-11-02 22:59:07,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 123 states, 122 states have (on average 3.4508196721311477) internal successors, (421), 63 states have internal predecessors, (421), 60 states have call successors, (60), 60 states have call predecessors, (60), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 490 transitions. [2021-11-02 22:59:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2021-11-02 22:59:07,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:07,526 INFO L513 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:07,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2021-11-02 22:59:07,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-02 22:59:07,729 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:59:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:07,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1508633784, now seen corresponding path program 60 times [2021-11-02 22:59:07,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:07,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035670961] [2021-11-02 22:59:07,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:07,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 0 proven. 14400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:11,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:11,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035670961] [2021-11-02 22:59:11,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035670961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:11,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962452538] [2021-11-02 22:59:11,793 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:59:11,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:11,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:11,796 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:11,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-02 22:59:16,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-02 22:59:16,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:16,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 124 conjunts are in the unsatisfiable core [2021-11-02 22:59:16,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14400 backedges. 0 proven. 14400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:17,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962452538] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:17,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:17,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2021-11-02 22:59:17,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724765706] [2021-11-02 22:59:17,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2021-11-02 22:59:17,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2021-11-02 22:59:17,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3907, Invalid=11593, Unknown=0, NotChecked=0, Total=15500 [2021-11-02 22:59:17,671 INFO L87 Difference]: Start difference. First operand 490 states and 490 transitions. Second operand has 125 states, 124 states have (on average 3.4516129032258065) internal successors, (428), 64 states have internal predecessors, (428), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:20,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:20,494 INFO L93 Difference]: Finished difference Result 503 states and 503 transitions. [2021-11-02 22:59:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2021-11-02 22:59:20,495 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 3.4516129032258065) internal successors, (428), 64 states have internal predecessors, (428), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 489 [2021-11-02 22:59:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:20,497 INFO L225 Difference]: With dead ends: 503 [2021-11-02 22:59:20,497 INFO L226 Difference]: Without dead ends: 502 [2021-11-02 22:59:20,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5430 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9641, Invalid=24769, Unknown=0, NotChecked=0, Total=34410 [2021-11-02 22:59:20,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-11-02 22:59:20,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 498. [2021-11-02 22:59:20,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 435 states have (on average 1.0022988505747126) internal successors, (436), 435 states have internal predecessors, (436), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:20,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 498 transitions. [2021-11-02 22:59:20,540 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 498 transitions. Word has length 489 [2021-11-02 22:59:20,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:20,540 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 498 transitions. [2021-11-02 22:59:20,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 3.4516129032258065) internal successors, (428), 64 states have internal predecessors, (428), 61 states have call successors, (61), 61 states have call predecessors, (61), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 498 transitions. [2021-11-02 22:59:20,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-11-02 22:59:20,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:20,543 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:20,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-02 22:59:20,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-02 22:59:20,743 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:59:20,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -444573691, now seen corresponding path program 61 times [2021-11-02 22:59:20,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:20,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895391580] [2021-11-02 22:59:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:20,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14884 backedges. 0 proven. 14884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:25,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:25,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895391580] [2021-11-02 22:59:25,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895391580] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:25,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225550551] [2021-11-02 22:59:25,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:59:25,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:25,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:25,269 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:25,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-02 22:59:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:30,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-02 22:59:30,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14884 backedges. 0 proven. 14884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:31,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225550551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:31,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:31,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2021-11-02 22:59:31,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620745465] [2021-11-02 22:59:31,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-11-02 22:59:31,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-11-02 22:59:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4033, Invalid=11969, Unknown=0, NotChecked=0, Total=16002 [2021-11-02 22:59:31,218 INFO L87 Difference]: Start difference. First operand 498 states and 498 transitions. Second operand has 127 states, 126 states have (on average 3.4523809523809526) internal successors, (435), 65 states have internal predecessors, (435), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:34,726 INFO L93 Difference]: Finished difference Result 511 states and 511 transitions. [2021-11-02 22:59:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-02 22:59:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 3.4523809523809526) internal successors, (435), 65 states have internal predecessors, (435), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 497 [2021-11-02 22:59:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:34,737 INFO L225 Difference]: With dead ends: 511 [2021-11-02 22:59:34,737 INFO L226 Difference]: Without dead ends: 510 [2021-11-02 22:59:34,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5612 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=9954, Invalid=25578, Unknown=0, NotChecked=0, Total=35532 [2021-11-02 22:59:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-11-02 22:59:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 506. [2021-11-02 22:59:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 442 states have (on average 1.002262443438914) internal successors, (443), 442 states have internal predecessors, (443), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 506 transitions. [2021-11-02 22:59:34,791 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 506 transitions. Word has length 497 [2021-11-02 22:59:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:34,792 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 506 transitions. [2021-11-02 22:59:34,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 3.4523809523809526) internal successors, (435), 65 states have internal predecessors, (435), 62 states have call successors, (62), 62 states have call predecessors, (62), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:34,792 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 506 transitions. [2021-11-02 22:59:34,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2021-11-02 22:59:34,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:34,796 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:34,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:35,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-02 22:59:35,017 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:59:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1662087230, now seen corresponding path program 62 times [2021-11-02 22:59:35,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:35,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045040176] [2021-11-02 22:59:35,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:35,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 0 proven. 15376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:39,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:39,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045040176] [2021-11-02 22:59:39,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045040176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:39,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917025591] [2021-11-02 22:59:39,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:59:39,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:39,594 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:39,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-02 22:59:44,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:59:44,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:44,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-02 22:59:44,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:59:45,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15376 backedges. 0 proven. 15376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:45,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917025591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:45,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:59:45,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2021-11-02 22:59:45,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560263029] [2021-11-02 22:59:45,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-11-02 22:59:45,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:59:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-11-02 22:59:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4161, Invalid=12351, Unknown=0, NotChecked=0, Total=16512 [2021-11-02 22:59:45,683 INFO L87 Difference]: Start difference. First operand 506 states and 506 transitions. Second operand has 129 states, 128 states have (on average 3.453125) internal successors, (442), 66 states have internal predecessors, (442), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:59:48,970 INFO L93 Difference]: Finished difference Result 519 states and 519 transitions. [2021-11-02 22:59:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-11-02 22:59:48,981 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 128 states have (on average 3.453125) internal successors, (442), 66 states have internal predecessors, (442), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 505 [2021-11-02 22:59:48,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:59:48,985 INFO L225 Difference]: With dead ends: 519 [2021-11-02 22:59:48,985 INFO L226 Difference]: Without dead ends: 518 [2021-11-02 22:59:48,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5797 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=10272, Invalid=26400, Unknown=0, NotChecked=0, Total=36672 [2021-11-02 22:59:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-02 22:59:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 514. [2021-11-02 22:59:49,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 449 states have (on average 1.0022271714922049) internal successors, (450), 449 states have internal predecessors, (450), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:49,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 514 transitions. [2021-11-02 22:59:49,052 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 514 transitions. Word has length 505 [2021-11-02 22:59:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:59:49,053 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 514 transitions. [2021-11-02 22:59:49,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 128 states have (on average 3.453125) internal successors, (442), 66 states have internal predecessors, (442), 63 states have call successors, (63), 63 states have call predecessors, (63), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:59:49,053 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 514 transitions. [2021-11-02 22:59:49,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-11-02 22:59:49,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:59:49,055 INFO L513 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2021-11-02 22:59:49,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-02 22:59:49,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:49,256 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 22:59:49,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:59:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash 817609343, now seen corresponding path program 63 times [2021-11-02 22:59:49,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:59:49,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802368562] [2021-11-02 22:59:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:59:49,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:59:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:59:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:59:53,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:59:53,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802368562] [2021-11-02 22:59:53,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802368562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:59:53,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518282331] [2021-11-02 22:59:53,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:59:53,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:59:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:59:53,793 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:59:53,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-02 22:59:59,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-02 22:59:59,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:59:59,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 130 conjunts are in the unsatisfiable core [2021-11-02 22:59:59,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:00:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 15876 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:00,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518282331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:00,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:00:00,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2021-11-02 23:00:00,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237354297] [2021-11-02 23:00:00,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-02 23:00:00,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-02 23:00:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4291, Invalid=12739, Unknown=0, NotChecked=0, Total=17030 [2021-11-02 23:00:00,294 INFO L87 Difference]: Start difference. First operand 514 states and 514 transitions. Second operand has 131 states, 130 states have (on average 3.453846153846154) internal successors, (449), 67 states have internal predecessors, (449), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:04,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:00:04,032 INFO L93 Difference]: Finished difference Result 527 states and 527 transitions. [2021-11-02 23:00:04,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-11-02 23:00:04,033 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 130 states have (on average 3.453846153846154) internal successors, (449), 67 states have internal predecessors, (449), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2021-11-02 23:00:04,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:00:04,037 INFO L225 Difference]: With dead ends: 527 [2021-11-02 23:00:04,037 INFO L226 Difference]: Without dead ends: 526 [2021-11-02 23:00:04,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5985 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10595, Invalid=27235, Unknown=0, NotChecked=0, Total=37830 [2021-11-02 23:00:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-02 23:00:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 522. [2021-11-02 23:00:04,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 456 states have (on average 1.0021929824561404) internal successors, (457), 456 states have internal predecessors, (457), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 522 transitions. [2021-11-02 23:00:04,121 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 522 transitions. Word has length 513 [2021-11-02 23:00:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:00:04,122 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 522 transitions. [2021-11-02 23:00:04,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 130 states have (on average 3.453846153846154) internal successors, (449), 67 states have internal predecessors, (449), 64 states have call successors, (64), 64 states have call predecessors, (64), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 522 transitions. [2021-11-02 23:00:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2021-11-02 23:00:04,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:00:04,125 INFO L513 BasicCegarLoop]: trace histogram [65, 65, 65, 64, 64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:04,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-02 23:00:04,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:04,325 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:00:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1480906812, now seen corresponding path program 64 times [2021-11-02 23:00:04,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:04,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801861825] [2021-11-02 23:00:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:04,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 0 proven. 16384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:08,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:08,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801861825] [2021-11-02 23:00:08,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801861825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:08,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531063573] [2021-11-02 23:00:08,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:00:08,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:08,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:00:08,903 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:00:08,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-02 23:00:14,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:00:14,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:00:14,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 132 conjunts are in the unsatisfiable core [2021-11-02 23:00:14,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:00:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 16384 backedges. 0 proven. 16384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:15,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531063573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:15,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:00:15,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2021-11-02 23:00:15,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925737027] [2021-11-02 23:00:15,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2021-11-02 23:00:15,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:15,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2021-11-02 23:00:15,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4423, Invalid=13133, Unknown=0, NotChecked=0, Total=17556 [2021-11-02 23:00:15,331 INFO L87 Difference]: Start difference. First operand 522 states and 522 transitions. Second operand has 133 states, 132 states have (on average 3.4545454545454546) internal successors, (456), 68 states have internal predecessors, (456), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:00:18,671 INFO L93 Difference]: Finished difference Result 535 states and 535 transitions. [2021-11-02 23:00:18,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2021-11-02 23:00:18,672 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 132 states have (on average 3.4545454545454546) internal successors, (456), 68 states have internal predecessors, (456), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 521 [2021-11-02 23:00:18,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:00:18,675 INFO L225 Difference]: With dead ends: 535 [2021-11-02 23:00:18,675 INFO L226 Difference]: Without dead ends: 534 [2021-11-02 23:00:18,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6176 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=10923, Invalid=28083, Unknown=0, NotChecked=0, Total=39006 [2021-11-02 23:00:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-02 23:00:18,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 530. [2021-11-02 23:00:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 463 states have (on average 1.0021598272138228) internal successors, (464), 463 states have internal predecessors, (464), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 530 transitions. [2021-11-02 23:00:18,840 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 530 transitions. Word has length 521 [2021-11-02 23:00:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:00:18,840 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 530 transitions. [2021-11-02 23:00:18,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 132 states have (on average 3.4545454545454546) internal successors, (456), 68 states have internal predecessors, (456), 65 states have call successors, (65), 65 states have call predecessors, (65), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 530 transitions. [2021-11-02 23:00:18,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2021-11-02 23:00:18,844 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:00:18,845 INFO L513 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:18,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-02 23:00:19,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-11-02 23:00:19,053 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:00:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:19,054 INFO L85 PathProgramCache]: Analyzing trace with hash 501672185, now seen corresponding path program 65 times [2021-11-02 23:00:19,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:19,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912519696] [2021-11-02 23:00:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:19,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:23,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16900 backedges. 0 proven. 16900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:23,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:23,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912519696] [2021-11-02 23:00:23,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912519696] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:23,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517228611] [2021-11-02 23:00:23,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:00:23,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:23,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:00:23,690 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:00:23,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-02 23:00:29,162 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-11-02 23:00:29,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:00:29,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 134 conjunts are in the unsatisfiable core [2021-11-02 23:00:29,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:00:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 16900 backedges. 0 proven. 16900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:30,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517228611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:30,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:00:30,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2021-11-02 23:00:30,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978698579] [2021-11-02 23:00:30,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 135 states [2021-11-02 23:00:30,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2021-11-02 23:00:30,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4557, Invalid=13533, Unknown=0, NotChecked=0, Total=18090 [2021-11-02 23:00:30,402 INFO L87 Difference]: Start difference. First operand 530 states and 530 transitions. Second operand has 135 states, 134 states have (on average 3.455223880597015) internal successors, (463), 69 states have internal predecessors, (463), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:33,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:00:33,869 INFO L93 Difference]: Finished difference Result 543 states and 543 transitions. [2021-11-02 23:00:33,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-11-02 23:00:33,869 INFO L78 Accepts]: Start accepts. Automaton has has 135 states, 134 states have (on average 3.455223880597015) internal successors, (463), 69 states have internal predecessors, (463), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 529 [2021-11-02 23:00:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:00:33,871 INFO L225 Difference]: With dead ends: 543 [2021-11-02 23:00:33,871 INFO L226 Difference]: Without dead ends: 542 [2021-11-02 23:00:33,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=11256, Invalid=28944, Unknown=0, NotChecked=0, Total=40200 [2021-11-02 23:00:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-02 23:00:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 538. [2021-11-02 23:00:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 470 states have (on average 1.0021276595744681) internal successors, (471), 470 states have internal predecessors, (471), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 538 transitions. [2021-11-02 23:00:33,922 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 538 transitions. Word has length 529 [2021-11-02 23:00:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:00:33,923 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 538 transitions. [2021-11-02 23:00:33,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 135 states, 134 states have (on average 3.455223880597015) internal successors, (463), 69 states have internal predecessors, (463), 66 states have call successors, (66), 66 states have call predecessors, (66), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 538 transitions. [2021-11-02 23:00:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2021-11-02 23:00:33,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:00:33,927 INFO L513 BasicCegarLoop]: trace histogram [67, 67, 67, 66, 66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:33,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-02 23:00:34,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:34,153 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:00:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash -553718602, now seen corresponding path program 66 times [2021-11-02 23:00:34,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:34,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548869451] [2021-11-02 23:00:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:34,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 0 proven. 17424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:38,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:38,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548869451] [2021-11-02 23:00:38,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548869451] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:38,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297962418] [2021-11-02 23:00:38,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:00:38,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:00:38,884 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:00:38,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-02 23:00:44,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-11-02 23:00:44,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:00:44,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 136 conjunts are in the unsatisfiable core [2021-11-02 23:00:44,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:00:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 17424 backedges. 0 proven. 17424 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:45,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297962418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:45,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:00:45,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2021-11-02 23:00:45,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529128780] [2021-11-02 23:00:45,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2021-11-02 23:00:45,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:00:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2021-11-02 23:00:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4693, Invalid=13939, Unknown=0, NotChecked=0, Total=18632 [2021-11-02 23:00:45,872 INFO L87 Difference]: Start difference. First operand 538 states and 538 transitions. Second operand has 137 states, 136 states have (on average 3.4558823529411766) internal successors, (470), 70 states have internal predecessors, (470), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:00:49,473 INFO L93 Difference]: Finished difference Result 551 states and 551 transitions. [2021-11-02 23:00:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-11-02 23:00:49,474 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 3.4558823529411766) internal successors, (470), 70 states have internal predecessors, (470), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 537 [2021-11-02 23:00:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:00:49,476 INFO L225 Difference]: With dead ends: 551 [2021-11-02 23:00:49,476 INFO L226 Difference]: Without dead ends: 550 [2021-11-02 23:00:49,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=11594, Invalid=29818, Unknown=0, NotChecked=0, Total=41412 [2021-11-02 23:00:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-02 23:00:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2021-11-02 23:00:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 477 states have (on average 1.0020964360587001) internal successors, (478), 477 states have internal predecessors, (478), 68 states have call successors, (68), 68 states have call predecessors, (68), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 546 transitions. [2021-11-02 23:00:49,530 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 546 transitions. Word has length 537 [2021-11-02 23:00:49,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:00:49,531 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 546 transitions. [2021-11-02 23:00:49,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 136 states have (on average 3.4558823529411766) internal successors, (470), 70 states have internal predecessors, (470), 67 states have call successors, (67), 67 states have call predecessors, (67), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:00:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 546 transitions. [2021-11-02 23:00:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-11-02 23:00:49,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:00:49,535 INFO L513 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2021-11-02 23:00:49,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-02 23:00:49,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:49,750 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:00:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:00:49,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1273619315, now seen corresponding path program 67 times [2021-11-02 23:00:49,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:00:49,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135876720] [2021-11-02 23:00:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:00:49,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:00:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:00:54,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17956 backedges. 0 proven. 17956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:00:54,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:00:54,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135876720] [2021-11-02 23:00:54,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135876720] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:00:54,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125602002] [2021-11-02 23:00:54,677 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:00:54,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:00:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:00:54,678 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:00:54,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-02 23:01:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:01:00,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 138 conjunts are in the unsatisfiable core [2021-11-02 23:01:00,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:01:01,706 INFO L134 CoverageAnalysis]: Checked inductivity of 17956 backedges. 0 proven. 17956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:01,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125602002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:01,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:01:01,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2021-11-02 23:01:01,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310993042] [2021-11-02 23:01:01,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2021-11-02 23:01:01,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:01:01,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2021-11-02 23:01:01,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4831, Invalid=14351, Unknown=0, NotChecked=0, Total=19182 [2021-11-02 23:01:01,712 INFO L87 Difference]: Start difference. First operand 546 states and 546 transitions. Second operand has 139 states, 138 states have (on average 3.4565217391304346) internal successors, (477), 71 states have internal predecessors, (477), 68 states have call successors, (68), 68 states have call predecessors, (68), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:01:05,341 INFO L93 Difference]: Finished difference Result 559 states and 559 transitions. [2021-11-02 23:01:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-11-02 23:01:05,341 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 138 states have (on average 3.4565217391304346) internal successors, (477), 71 states have internal predecessors, (477), 68 states have call successors, (68), 68 states have call predecessors, (68), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2021-11-02 23:01:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:01:05,344 INFO L225 Difference]: With dead ends: 559 [2021-11-02 23:01:05,344 INFO L226 Difference]: Without dead ends: 558 [2021-11-02 23:01:05,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6767 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=11937, Invalid=30705, Unknown=0, NotChecked=0, Total=42642 [2021-11-02 23:01:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-02 23:01:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 554. [2021-11-02 23:01:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 484 states have (on average 1.0020661157024793) internal successors, (485), 484 states have internal predecessors, (485), 69 states have call successors, (69), 69 states have call predecessors, (69), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 554 transitions. [2021-11-02 23:01:05,397 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 554 transitions. Word has length 545 [2021-11-02 23:01:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:01:05,398 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 554 transitions. [2021-11-02 23:01:05,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 138 states have (on average 3.4565217391304346) internal successors, (477), 71 states have internal predecessors, (477), 68 states have call successors, (68), 68 states have call predecessors, (68), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 554 transitions. [2021-11-02 23:01:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-02 23:01:05,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:01:05,401 INFO L513 BasicCegarLoop]: trace histogram [69, 69, 69, 68, 68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2021-11-02 23:01:05,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-11-02 23:01:05,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-11-02 23:01:05,602 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:01:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:01:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1745145136, now seen corresponding path program 68 times [2021-11-02 23:01:05,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:01:05,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584497352] [2021-11-02 23:01:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:01:05,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:01:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:01:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 0 proven. 18496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:10,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:01:10,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584497352] [2021-11-02 23:01:10,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584497352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:10,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654827632] [2021-11-02 23:01:10,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:01:10,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:01:10,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:01:10,697 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:01:10,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-02 23:01:16,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:01:16,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:01:16,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 140 conjunts are in the unsatisfiable core [2021-11-02 23:01:16,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:01:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18496 backedges. 0 proven. 18496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:17,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654827632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:17,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:01:17,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2021-11-02 23:01:17,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400127166] [2021-11-02 23:01:17,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2021-11-02 23:01:17,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:01:17,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2021-11-02 23:01:17,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4971, Invalid=14769, Unknown=0, NotChecked=0, Total=19740 [2021-11-02 23:01:17,886 INFO L87 Difference]: Start difference. First operand 554 states and 554 transitions. Second operand has 141 states, 140 states have (on average 3.4571428571428573) internal successors, (484), 72 states have internal predecessors, (484), 69 states have call successors, (69), 69 states have call predecessors, (69), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:01:21,665 INFO L93 Difference]: Finished difference Result 567 states and 567 transitions. [2021-11-02 23:01:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-11-02 23:01:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 140 states have (on average 3.4571428571428573) internal successors, (484), 72 states have internal predecessors, (484), 69 states have call successors, (69), 69 states have call predecessors, (69), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 553 [2021-11-02 23:01:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:01:21,668 INFO L225 Difference]: With dead ends: 567 [2021-11-02 23:01:21,668 INFO L226 Difference]: Without dead ends: 566 [2021-11-02 23:01:21,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6970 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=12285, Invalid=31605, Unknown=0, NotChecked=0, Total=43890 [2021-11-02 23:01:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-02 23:01:21,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 562. [2021-11-02 23:01:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 491 states have (on average 1.0020366598778003) internal successors, (492), 491 states have internal predecessors, (492), 70 states have call successors, (70), 70 states have call predecessors, (70), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 562 transitions. [2021-11-02 23:01:21,721 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 562 transitions. Word has length 553 [2021-11-02 23:01:21,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:01:21,722 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 562 transitions. [2021-11-02 23:01:21,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 140 states have (on average 3.4571428571428573) internal successors, (484), 72 states have internal predecessors, (484), 69 states have call successors, (69), 69 states have call predecessors, (69), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 562 transitions. [2021-11-02 23:01:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2021-11-02 23:01:21,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:01:21,724 INFO L513 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2021-11-02 23:01:21,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-11-02 23:01:21,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:01:21,925 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:01:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:01:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1985173011, now seen corresponding path program 69 times [2021-11-02 23:01:21,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:01:21,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123531214] [2021-11-02 23:01:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:01:21,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:01:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:01:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:27,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:01:27,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123531214] [2021-11-02 23:01:27,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123531214] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:27,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417959697] [2021-11-02 23:01:27,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:01:27,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:01:27,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:01:27,059 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:01:27,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-02 23:01:33,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-11-02 23:01:33,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:01:33,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 142 conjunts are in the unsatisfiable core [2021-11-02 23:01:33,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:01:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:34,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417959697] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:34,721 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:01:34,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2021-11-02 23:01:34,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470814538] [2021-11-02 23:01:34,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2021-11-02 23:01:34,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:01:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2021-11-02 23:01:34,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5113, Invalid=15193, Unknown=0, NotChecked=0, Total=20306 [2021-11-02 23:01:34,727 INFO L87 Difference]: Start difference. First operand 562 states and 562 transitions. Second operand has 143 states, 142 states have (on average 3.4577464788732395) internal successors, (491), 73 states have internal predecessors, (491), 70 states have call successors, (70), 70 states have call predecessors, (70), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:38,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:01:38,606 INFO L93 Difference]: Finished difference Result 575 states and 575 transitions. [2021-11-02 23:01:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-11-02 23:01:38,606 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 142 states have (on average 3.4577464788732395) internal successors, (491), 73 states have internal predecessors, (491), 70 states have call successors, (70), 70 states have call predecessors, (70), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 561 [2021-11-02 23:01:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:01:38,609 INFO L225 Difference]: With dead ends: 575 [2021-11-02 23:01:38,609 INFO L226 Difference]: Without dead ends: 574 [2021-11-02 23:01:38,613 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7176 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=12638, Invalid=32518, Unknown=0, NotChecked=0, Total=45156 [2021-11-02 23:01:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-02 23:01:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 570. [2021-11-02 23:01:38,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 498 states have (on average 1.002008032128514) internal successors, (499), 498 states have internal predecessors, (499), 71 states have call successors, (71), 71 states have call predecessors, (71), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 570 transitions. [2021-11-02 23:01:38,757 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 570 transitions. Word has length 561 [2021-11-02 23:01:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:01:38,758 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 570 transitions. [2021-11-02 23:01:38,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 142 states have (on average 3.4577464788732395) internal successors, (491), 73 states have internal predecessors, (491), 70 states have call successors, (70), 70 states have call predecessors, (70), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 570 transitions. [2021-11-02 23:01:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2021-11-02 23:01:38,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:01:38,761 INFO L513 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2021-11-02 23:01:38,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-11-02 23:01:38,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:01:38,961 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:01:38,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:01:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1514043818, now seen corresponding path program 70 times [2021-11-02 23:01:38,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:01:38,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561431936] [2021-11-02 23:01:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:01:38,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:01:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:01:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19600 backedges. 0 proven. 19600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:44,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:01:44,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561431936] [2021-11-02 23:01:44,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561431936] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:44,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834028716] [2021-11-02 23:01:44,225 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:01:44,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:01:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:01:44,226 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:01:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-02 23:01:50,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:01:50,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:01:50,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 144 conjunts are in the unsatisfiable core [2021-11-02 23:01:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:01:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19600 backedges. 0 proven. 19600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:01:51,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834028716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:01:51,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:01:51,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2021-11-02 23:01:51,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381665586] [2021-11-02 23:01:51,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2021-11-02 23:01:51,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:01:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2021-11-02 23:01:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5257, Invalid=15623, Unknown=0, NotChecked=0, Total=20880 [2021-11-02 23:01:51,790 INFO L87 Difference]: Start difference. First operand 570 states and 570 transitions. Second operand has 145 states, 144 states have (on average 3.4583333333333335) internal successors, (498), 74 states have internal predecessors, (498), 71 states have call successors, (71), 71 states have call predecessors, (71), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:01:55,891 INFO L93 Difference]: Finished difference Result 583 states and 583 transitions. [2021-11-02 23:01:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2021-11-02 23:01:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 145 states, 144 states have (on average 3.4583333333333335) internal successors, (498), 74 states have internal predecessors, (498), 71 states have call successors, (71), 71 states have call predecessors, (71), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 569 [2021-11-02 23:01:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:01:55,894 INFO L225 Difference]: With dead ends: 583 [2021-11-02 23:01:55,894 INFO L226 Difference]: Without dead ends: 582 [2021-11-02 23:01:55,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 783 GetRequests, 569 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7385 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=12996, Invalid=33444, Unknown=0, NotChecked=0, Total=46440 [2021-11-02 23:01:55,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-02 23:01:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 578. [2021-11-02 23:01:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 505 states have (on average 1.001980198019802) internal successors, (506), 505 states have internal predecessors, (506), 72 states have call successors, (72), 72 states have call predecessors, (72), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 578 transitions. [2021-11-02 23:01:55,958 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 578 transitions. Word has length 569 [2021-11-02 23:01:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:01:55,958 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 578 transitions. [2021-11-02 23:01:55,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 144 states have (on average 3.4583333333333335) internal successors, (498), 74 states have internal predecessors, (498), 71 states have call successors, (71), 71 states have call predecessors, (71), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:01:55,959 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 578 transitions. [2021-11-02 23:01:55,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2021-11-02 23:01:55,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:01:55,963 INFO L513 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2021-11-02 23:01:56,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-11-02 23:01:56,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-11-02 23:01:56,170 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:01:56,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:01:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash -703120281, now seen corresponding path program 71 times [2021-11-02 23:01:56,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:01:56,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507266160] [2021-11-02 23:01:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:01:56,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:01:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:01,757 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 0 proven. 20164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:01,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:01,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507266160] [2021-11-02 23:02:01,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507266160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:01,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754679723] [2021-11-02 23:02:01,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:02:01,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:01,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:01,758 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:02:01,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-02 23:02:08,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-11-02 23:02:08,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:02:08,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 146 conjunts are in the unsatisfiable core [2021-11-02 23:02:08,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 20164 backedges. 0 proven. 20164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:09,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754679723] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:09,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:02:09,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2021-11-02 23:02:09,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56429139] [2021-11-02 23:02:09,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 147 states [2021-11-02 23:02:09,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2021-11-02 23:02:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5403, Invalid=16059, Unknown=0, NotChecked=0, Total=21462 [2021-11-02 23:02:09,701 INFO L87 Difference]: Start difference. First operand 578 states and 578 transitions. Second operand has 147 states, 146 states have (on average 3.458904109589041) internal successors, (505), 75 states have internal predecessors, (505), 72 states have call successors, (72), 72 states have call predecessors, (72), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:13,748 INFO L93 Difference]: Finished difference Result 591 states and 591 transitions. [2021-11-02 23:02:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-11-02 23:02:13,749 INFO L78 Accepts]: Start accepts. Automaton has has 147 states, 146 states have (on average 3.458904109589041) internal successors, (505), 75 states have internal predecessors, (505), 72 states have call successors, (72), 72 states have call predecessors, (72), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 577 [2021-11-02 23:02:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:13,751 INFO L225 Difference]: With dead ends: 591 [2021-11-02 23:02:13,751 INFO L226 Difference]: Without dead ends: 590 [2021-11-02 23:02:13,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7597 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=13359, Invalid=34383, Unknown=0, NotChecked=0, Total=47742 [2021-11-02 23:02:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-02 23:02:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 586. [2021-11-02 23:02:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 512 states have (on average 1.001953125) internal successors, (513), 512 states have internal predecessors, (513), 73 states have call successors, (73), 73 states have call predecessors, (73), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 586 transitions. [2021-11-02 23:02:13,812 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 586 transitions. Word has length 577 [2021-11-02 23:02:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:13,812 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 586 transitions. [2021-11-02 23:02:13,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 147 states, 146 states have (on average 3.458904109589041) internal successors, (505), 75 states have internal predecessors, (505), 72 states have call successors, (72), 72 states have call predecessors, (72), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 586 transitions. [2021-11-02 23:02:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2021-11-02 23:02:13,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:13,815 INFO L513 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:13,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:14,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:14,017 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:02:14,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:14,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1284764196, now seen corresponding path program 72 times [2021-11-02 23:02:14,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:14,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853718072] [2021-11-02 23:02:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:14,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20736 backedges. 0 proven. 20736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:19,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:19,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853718072] [2021-11-02 23:02:19,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853718072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:19,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370992045] [2021-11-02 23:02:19,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 23:02:19,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:19,706 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:02:19,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-02 23:02:26,435 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-11-02 23:02:26,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:02:26,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 148 conjunts are in the unsatisfiable core [2021-11-02 23:02:26,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20736 backedges. 0 proven. 20736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:27,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370992045] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:27,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:02:27,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2021-11-02 23:02:27,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483598986] [2021-11-02 23:02:27,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2021-11-02 23:02:27,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2021-11-02 23:02:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5551, Invalid=16501, Unknown=0, NotChecked=0, Total=22052 [2021-11-02 23:02:27,948 INFO L87 Difference]: Start difference. First operand 586 states and 586 transitions. Second operand has 149 states, 148 states have (on average 3.4594594594594597) internal successors, (512), 76 states have internal predecessors, (512), 73 states have call successors, (73), 73 states have call predecessors, (73), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:32,214 INFO L93 Difference]: Finished difference Result 599 states and 599 transitions. [2021-11-02 23:02:32,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2021-11-02 23:02:32,214 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 3.4594594594594597) internal successors, (512), 76 states have internal predecessors, (512), 73 states have call successors, (73), 73 states have call predecessors, (73), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 585 [2021-11-02 23:02:32,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:32,217 INFO L225 Difference]: With dead ends: 599 [2021-11-02 23:02:32,217 INFO L226 Difference]: Without dead ends: 598 [2021-11-02 23:02:32,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7812 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=13727, Invalid=35335, Unknown=0, NotChecked=0, Total=49062 [2021-11-02 23:02:32,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-11-02 23:02:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 594. [2021-11-02 23:02:32,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 519 states have (on average 1.001926782273603) internal successors, (520), 519 states have internal predecessors, (520), 74 states have call successors, (74), 74 states have call predecessors, (74), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 594 transitions. [2021-11-02 23:02:32,280 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 594 transitions. Word has length 585 [2021-11-02 23:02:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:32,281 INFO L470 AbstractCegarLoop]: Abstraction has 594 states and 594 transitions. [2021-11-02 23:02:32,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 3.4594594594594597) internal successors, (512), 76 states have internal predecessors, (512), 73 states have call successors, (73), 73 states have call predecessors, (73), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:32,281 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 594 transitions. [2021-11-02 23:02:32,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-11-02 23:02:32,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:32,286 INFO L513 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:32,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-11-02 23:02:32,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-11-02 23:02:32,501 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:02:32,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1611766497, now seen corresponding path program 73 times [2021-11-02 23:02:32,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:32,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726884084] [2021-11-02 23:02:32,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:32,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 21316 backedges. 0 proven. 21316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:38,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:38,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726884084] [2021-11-02 23:02:38,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726884084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:38,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252338970] [2021-11-02 23:02:38,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 23:02:38,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:38,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:38,297 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:02:38,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-02 23:02:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:45,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 150 conjunts are in the unsatisfiable core [2021-11-02 23:02:45,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:02:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21316 backedges. 0 proven. 21316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:46,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252338970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:46,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:02:46,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2021-11-02 23:02:46,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097548626] [2021-11-02 23:02:46,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2021-11-02 23:02:46,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:46,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2021-11-02 23:02:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5701, Invalid=16949, Unknown=0, NotChecked=0, Total=22650 [2021-11-02 23:02:46,533 INFO L87 Difference]: Start difference. First operand 594 states and 594 transitions. Second operand has 151 states, 150 states have (on average 3.46) internal successors, (519), 77 states have internal predecessors, (519), 74 states have call successors, (74), 74 states have call predecessors, (74), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:50,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:50,809 INFO L93 Difference]: Finished difference Result 607 states and 607 transitions. [2021-11-02 23:02:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2021-11-02 23:02:50,809 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 150 states have (on average 3.46) internal successors, (519), 77 states have internal predecessors, (519), 74 states have call successors, (74), 74 states have call predecessors, (74), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2021-11-02 23:02:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:50,812 INFO L225 Difference]: With dead ends: 607 [2021-11-02 23:02:50,812 INFO L226 Difference]: Without dead ends: 606 [2021-11-02 23:02:50,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8030 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=14100, Invalid=36300, Unknown=0, NotChecked=0, Total=50400 [2021-11-02 23:02:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-02 23:02:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 602. [2021-11-02 23:02:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 526 states have (on average 1.0019011406844107) internal successors, (527), 526 states have internal predecessors, (527), 75 states have call successors, (75), 75 states have call predecessors, (75), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 602 transitions. [2021-11-02 23:02:50,873 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 602 transitions. Word has length 593 [2021-11-02 23:02:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:50,874 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 602 transitions. [2021-11-02 23:02:50,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 150 states have (on average 3.46) internal successors, (519), 77 states have internal predecessors, (519), 74 states have call successors, (74), 74 states have call predecessors, (74), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:50,874 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 602 transitions. [2021-11-02 23:02:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2021-11-02 23:02:50,876 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:50,876 INFO L513 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:50,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-02 23:02:51,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:51,077 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:02:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash 99432094, now seen corresponding path program 74 times [2021-11-02 23:02:51,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:51,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282895099] [2021-11-02 23:02:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:51,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 21904 backedges. 0 proven. 21904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:02:57,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:57,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282895099] [2021-11-02 23:02:57,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282895099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:02:57,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193919648] [2021-11-02 23:02:57,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 23:02:57,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:02:57,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:57,044 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:02:57,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-02 23:03:04,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 23:03:04,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:03:04,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1240 conjuncts, 152 conjunts are in the unsatisfiable core [2021-11-02 23:03:04,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:03:05,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21904 backedges. 0 proven. 21904 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193919648] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:03:05,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:03:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2021-11-02 23:03:05,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486638544] [2021-11-02 23:03:05,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2021-11-02 23:03:05,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:05,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2021-11-02 23:03:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5853, Invalid=17403, Unknown=0, NotChecked=0, Total=23256 [2021-11-02 23:03:05,616 INFO L87 Difference]: Start difference. First operand 602 states and 602 transitions. Second operand has 153 states, 152 states have (on average 3.460526315789474) internal successors, (526), 78 states have internal predecessors, (526), 75 states have call successors, (75), 75 states have call predecessors, (75), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:10,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:10,024 INFO L93 Difference]: Finished difference Result 615 states and 615 transitions. [2021-11-02 23:03:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2021-11-02 23:03:10,024 INFO L78 Accepts]: Start accepts. Automaton has has 153 states, 152 states have (on average 3.460526315789474) internal successors, (526), 78 states have internal predecessors, (526), 75 states have call successors, (75), 75 states have call predecessors, (75), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 601 [2021-11-02 23:03:10,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:10,027 INFO L225 Difference]: With dead ends: 615 [2021-11-02 23:03:10,027 INFO L226 Difference]: Without dead ends: 614 [2021-11-02 23:03:10,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8251 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=14478, Invalid=37278, Unknown=0, NotChecked=0, Total=51756 [2021-11-02 23:03:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-02 23:03:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 610. [2021-11-02 23:03:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 533 states have (on average 1.00187617260788) internal successors, (534), 533 states have internal predecessors, (534), 76 states have call successors, (76), 76 states have call predecessors, (76), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 610 transitions. [2021-11-02 23:03:10,092 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 610 transitions. Word has length 601 [2021-11-02 23:03:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:10,093 INFO L470 AbstractCegarLoop]: Abstraction has 610 states and 610 transitions. [2021-11-02 23:03:10,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 153 states, 152 states have (on average 3.460526315789474) internal successors, (526), 78 states have internal predecessors, (526), 75 states have call successors, (75), 75 states have call predecessors, (75), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 610 transitions. [2021-11-02 23:03:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-11-02 23:03:10,095 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:10,096 INFO L513 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:10,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-11-02 23:03:10,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:03:10,297 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:03:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2038184613, now seen corresponding path program 75 times [2021-11-02 23:03:10,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:10,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853437781] [2021-11-02 23:03:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:10,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:16,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:16,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853437781] [2021-11-02 23:03:16,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853437781] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:03:16,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096031359] [2021-11-02 23:03:16,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 23:03:16,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:03:16,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:03:16,428 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:03:16,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-02 23:03:23,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-11-02 23:03:23,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:03:23,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 154 conjunts are in the unsatisfiable core [2021-11-02 23:03:23,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:03:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:25,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096031359] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:03:25,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:03:25,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2021-11-02 23:03:25,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708722637] [2021-11-02 23:03:25,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2021-11-02 23:03:25,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:25,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2021-11-02 23:03:25,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6007, Invalid=17863, Unknown=0, NotChecked=0, Total=23870 [2021-11-02 23:03:25,304 INFO L87 Difference]: Start difference. First operand 610 states and 610 transitions. Second operand has 155 states, 154 states have (on average 3.461038961038961) internal successors, (533), 79 states have internal predecessors, (533), 76 states have call successors, (76), 76 states have call predecessors, (76), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:29,882 INFO L93 Difference]: Finished difference Result 623 states and 623 transitions. [2021-11-02 23:03:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-11-02 23:03:29,883 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 154 states have (on average 3.461038961038961) internal successors, (533), 79 states have internal predecessors, (533), 76 states have call successors, (76), 76 states have call predecessors, (76), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 609 [2021-11-02 23:03:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:29,885 INFO L225 Difference]: With dead ends: 623 [2021-11-02 23:03:29,885 INFO L226 Difference]: Without dead ends: 622 [2021-11-02 23:03:29,889 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8475 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=14861, Invalid=38269, Unknown=0, NotChecked=0, Total=53130 [2021-11-02 23:03:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-02 23:03:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 618. [2021-11-02 23:03:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 540 states have (on average 1.0018518518518518) internal successors, (541), 540 states have internal predecessors, (541), 77 states have call successors, (77), 77 states have call predecessors, (77), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 618 transitions. [2021-11-02 23:03:29,952 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 618 transitions. Word has length 609 [2021-11-02 23:03:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:29,952 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 618 transitions. [2021-11-02 23:03:29,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 154 states have (on average 3.461038961038961) internal successors, (533), 79 states have internal predecessors, (533), 76 states have call successors, (76), 76 states have call predecessors, (76), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 618 transitions. [2021-11-02 23:03:29,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-02 23:03:29,955 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:29,956 INFO L513 BasicCegarLoop]: trace histogram [77, 77, 77, 76, 76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:30,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-02 23:03:30,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:03:30,156 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:03:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:30,156 INFO L85 PathProgramCache]: Analyzing trace with hash 2100447000, now seen corresponding path program 76 times [2021-11-02 23:03:30,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:30,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127456520] [2021-11-02 23:03:30,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:30,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 23104 backedges. 0 proven. 23104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:36,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:36,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127456520] [2021-11-02 23:03:36,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127456520] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:03:36,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535799085] [2021-11-02 23:03:36,658 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 23:03:36,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:03:36,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:03:36,659 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:03:36,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-02 23:03:43,972 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 23:03:43,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:03:43,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 156 conjunts are in the unsatisfiable core [2021-11-02 23:03:43,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:03:45,503 INFO L134 CoverageAnalysis]: Checked inductivity of 23104 backedges. 0 proven. 23104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:45,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535799085] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:03:45,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:03:45,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2021-11-02 23:03:45,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341651961] [2021-11-02 23:03:45,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 157 states [2021-11-02 23:03:45,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:45,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2021-11-02 23:03:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6163, Invalid=18329, Unknown=0, NotChecked=0, Total=24492 [2021-11-02 23:03:45,507 INFO L87 Difference]: Start difference. First operand 618 states and 618 transitions. Second operand has 157 states, 156 states have (on average 3.4615384615384617) internal successors, (540), 80 states have internal predecessors, (540), 77 states have call successors, (77), 77 states have call predecessors, (77), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:50,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:50,145 INFO L93 Difference]: Finished difference Result 631 states and 631 transitions. [2021-11-02 23:03:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2021-11-02 23:03:50,145 INFO L78 Accepts]: Start accepts. Automaton has has 157 states, 156 states have (on average 3.4615384615384617) internal successors, (540), 80 states have internal predecessors, (540), 77 states have call successors, (77), 77 states have call predecessors, (77), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 617 [2021-11-02 23:03:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:50,148 INFO L225 Difference]: With dead ends: 631 [2021-11-02 23:03:50,148 INFO L226 Difference]: Without dead ends: 630 [2021-11-02 23:03:50,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8702 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=15249, Invalid=39273, Unknown=0, NotChecked=0, Total=54522 [2021-11-02 23:03:50,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-11-02 23:03:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 626. [2021-11-02 23:03:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 547 states have (on average 1.0018281535648994) internal successors, (548), 547 states have internal predecessors, (548), 78 states have call successors, (78), 78 states have call predecessors, (78), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:50,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 626 transitions. [2021-11-02 23:03:50,218 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 626 transitions. Word has length 617 [2021-11-02 23:03:50,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:50,218 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 626 transitions. [2021-11-02 23:03:50,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 157 states, 156 states have (on average 3.4615384615384617) internal successors, (540), 80 states have internal predecessors, (540), 77 states have call successors, (77), 77 states have call predecessors, (77), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:50,219 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 626 transitions. [2021-11-02 23:03:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2021-11-02 23:03:50,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:50,222 INFO L513 BasicCegarLoop]: trace histogram [78, 78, 78, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2021-11-02 23:03:50,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-11-02 23:03:50,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:03:50,422 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:03:50,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:50,423 INFO L85 PathProgramCache]: Analyzing trace with hash -665469995, now seen corresponding path program 77 times [2021-11-02 23:03:50,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:50,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083557204] [2021-11-02 23:03:50,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:50,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 23716 backedges. 0 proven. 23716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:03:57,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:57,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083557204] [2021-11-02 23:03:57,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083557204] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:03:57,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668143264] [2021-11-02 23:03:57,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 23:03:57,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 23:03:57,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:03:57,033 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 23:03:57,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-02 23:04:04,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-11-02 23:04:04,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 23:04:04,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 158 conjunts are in the unsatisfiable core [2021-11-02 23:04:04,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 23:04:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 23716 backedges. 0 proven. 23716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 23:04:06,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668143264] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 23:04:06,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 23:04:06,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2021-11-02 23:04:06,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798991641] [2021-11-02 23:04:06,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 159 states [2021-11-02 23:04:06,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:04:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2021-11-02 23:04:06,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6321, Invalid=18801, Unknown=0, NotChecked=0, Total=25122 [2021-11-02 23:04:06,211 INFO L87 Difference]: Start difference. First operand 626 states and 626 transitions. Second operand has 159 states, 158 states have (on average 3.462025316455696) internal successors, (547), 81 states have internal predecessors, (547), 78 states have call successors, (78), 78 states have call predecessors, (78), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:04:10,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:04:10,925 INFO L93 Difference]: Finished difference Result 639 states and 639 transitions. [2021-11-02 23:04:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2021-11-02 23:04:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 159 states, 158 states have (on average 3.462025316455696) internal successors, (547), 81 states have internal predecessors, (547), 78 states have call successors, (78), 78 states have call predecessors, (78), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 625 [2021-11-02 23:04:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:04:10,928 INFO L225 Difference]: With dead ends: 639 [2021-11-02 23:04:10,928 INFO L226 Difference]: Without dead ends: 638 [2021-11-02 23:04:10,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=15642, Invalid=40290, Unknown=0, NotChecked=0, Total=55932 [2021-11-02 23:04:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-02 23:04:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 634. [2021-11-02 23:04:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 554 states have (on average 1.0018050541516246) internal successors, (555), 554 states have internal predecessors, (555), 79 states have call successors, (79), 79 states have call predecessors, (79), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:04:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 634 transitions. [2021-11-02 23:04:11,049 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 634 transitions. Word has length 625 [2021-11-02 23:04:11,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:04:11,049 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 634 transitions. [2021-11-02 23:04:11,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 159 states, 158 states have (on average 3.462025316455696) internal successors, (547), 81 states have internal predecessors, (547), 78 states have call successors, (78), 78 states have call predecessors, (78), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:04:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 634 transitions. [2021-11-02 23:04:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 634 [2021-11-02 23:04:11,053 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:04:11,053 INFO L513 BasicCegarLoop]: trace histogram [79, 79, 79, 78, 78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2021-11-02 23:04:11,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-02 23:04:11,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1444eda-97f1-4a16-b5b7-94994a0170fe/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-11-02 23:04:11,253 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, additionErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-02 23:04:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:04:11,254 INFO L85 PathProgramCache]: Analyzing trace with hash -649387118, now seen corresponding path program 78 times [2021-11-02 23:04:11,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:04:11,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886923010] [2021-11-02 23:04:11,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:04:11,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:04:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat