./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX --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 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:39:12,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:39:12,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:39:12,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:39:12,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:39:12,718 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:39:12,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:39:12,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:39:12,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:39:12,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:39:12,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:39:12,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:39:12,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:39:12,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:39:12,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:39:12,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:39:12,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:39:12,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:39:12,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:39:12,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:39:12,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:39:12,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:39:12,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:39:12,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:39:12,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:39:12,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:39:12,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:39:12,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:39:12,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:39:12,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:39:12,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:39:12,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:39:12,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:39:12,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:39:12,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:39:12,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:39:12,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:39:12,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:39:12,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:39:12,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:39:12,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:39:12,776 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-09 10:39:12,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:39:12,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:39:12,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:39:12,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:39:12,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:39:12,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:39:12,807 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:39:12,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:39:12,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:39:12,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 10:39:12,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:39:12,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:39:12,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:39:12,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:39:12,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:39:12,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:39:12,809 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 10:39:12,809 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:39:12,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:39:12,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:39:12,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:39:12,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:39:12,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:39:12,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:39:12,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:39:12,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:39:12,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:39:12,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:39:12,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:39:12,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:39:12,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:39:12,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:39:12,813 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_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a34048511216dfe9a14f70dd929fd2de5a6eaf4560cb9e9e466dd0467a1d6d7 [2021-11-09 10:39:13,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:39:13,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:39:13,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:39:13,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:39:13,085 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:39:13,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-09 10:39:13,171 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/data/7c0808942/d7edce0dedd0475ba2684ee31a7c2310/FLAGcd48919f1 [2021-11-09 10:39:13,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:39:13,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i [2021-11-09 10:39:13,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/data/7c0808942/d7edce0dedd0475ba2684ee31a7c2310/FLAGcd48919f1 [2021-11-09 10:39:14,045 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/data/7c0808942/d7edce0dedd0475ba2684ee31a7c2310 [2021-11-09 10:39:14,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:39:14,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:39:14,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:39:14,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:39:14,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:39:14,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2004dd0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14, skipping insertion in model container [2021-11-09 10:39:14,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:39:14,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:39:14,567 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_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-09 10:39:14,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:39:14,662 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:39:14,692 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_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-1.i[33021,33034] [2021-11-09 10:39:14,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:39:14,806 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:39:14,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14 WrapperNode [2021-11-09 10:39:14,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:39:14,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:39:14,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:39:14,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:39:14,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:39:14,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:39:14,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:39:14,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:39:14,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:14,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:15,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:15,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:15,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:15,057 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:39:15,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:39:15,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:39:15,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:39:15,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (1/1) ... [2021-11-09 10:39:15,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:39:15,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:15,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:39:15,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:39:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 10:39:15,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 10:39:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 10:39:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 10:39:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:39:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 10:39:15,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 10:39:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:39:15,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:39:15,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:39:16,392 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:39:16,395 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 10:39:16,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:16 BoogieIcfgContainer [2021-11-09 10:39:16,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:39:16,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:39:16,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:39:16,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:39:16,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:39:14" (1/3) ... [2021-11-09 10:39:16,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5337e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:16, skipping insertion in model container [2021-11-09 10:39:16,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:14" (2/3) ... [2021-11-09 10:39:16,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5337e86e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:16, skipping insertion in model container [2021-11-09 10:39:16,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:16" (3/3) ... [2021-11-09 10:39:16,412 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-1.i [2021-11-09 10:39:16,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:39:16,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 10:39:16,484 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:39:16,493 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 [2021-11-09 10:39:16,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 10:39:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 129 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 10:39:16,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:16,516 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 10:39:16,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:16,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:16,521 INFO L85 PathProgramCache]: Analyzing trace with hash 889985515, now seen corresponding path program 1 times [2021-11-09 10:39:16,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:16,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088612954] [2021-11-09 10:39:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:16,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:16,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:16,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088612954] [2021-11-09 10:39:16,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088612954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:16,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:16,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:16,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305786651] [2021-11-09 10:39:16,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:39:16,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:39:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:16,726 INFO L87 Difference]: Start difference. First operand has 130 states, 123 states have (on average 1.7317073170731707) internal successors, (213), 129 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:16,895 INFO L93 Difference]: Finished difference Result 350 states and 581 transitions. [2021-11-09 10:39:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:16,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-09 10:39:16,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:16,917 INFO L225 Difference]: With dead ends: 350 [2021-11-09 10:39:16,917 INFO L226 Difference]: Without dead ends: 218 [2021-11-09 10:39:16,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-09 10:39:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 129. [2021-11-09 10:39:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 124 states have (on average 1.346774193548387) internal successors, (167), 128 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2021-11-09 10:39:17,002 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 6 [2021-11-09 10:39:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:17,003 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2021-11-09 10:39:17,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2021-11-09 10:39:17,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:39:17,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:17,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:17,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:39:17,007 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:17,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:17,010 INFO L85 PathProgramCache]: Analyzing trace with hash 703481080, now seen corresponding path program 1 times [2021-11-09 10:39:17,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:17,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726375854] [2021-11-09 10:39:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:17,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:17,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:17,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482778277] [2021-11-09 10:39:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:17,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:17,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:17,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:17,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:39:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:17,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:17,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:17,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:17,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726375854] [2021-11-09 10:39:17,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:17,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482778277] [2021-11-09 10:39:17,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482778277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:17,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:17,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:17,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024776564] [2021-11-09 10:39:17,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:39:17,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:39:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:17,530 INFO L87 Difference]: Start difference. First operand 129 states and 167 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:17,654 INFO L93 Difference]: Finished difference Result 273 states and 359 transitions. [2021-11-09 10:39:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:17,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 10:39:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:17,658 INFO L225 Difference]: With dead ends: 273 [2021-11-09 10:39:17,659 INFO L226 Difference]: Without dead ends: 150 [2021-11-09 10:39:17,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-09 10:39:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-11-09 10:39:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 144 states have (on average 1.2986111111111112) internal successors, (187), 148 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 187 transitions. [2021-11-09 10:39:17,677 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 187 transitions. Word has length 56 [2021-11-09 10:39:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:17,679 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 187 transitions. [2021-11-09 10:39:17,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 187 transitions. [2021-11-09 10:39:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:39:17,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:17,690 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:17,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-09 10:39:17,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:17,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:17,892 INFO L85 PathProgramCache]: Analyzing trace with hash 680848826, now seen corresponding path program 1 times [2021-11-09 10:39:17,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:17,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220483722] [2021-11-09 10:39:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:17,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:17,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:17,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726521012] [2021-11-09 10:39:17,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:17,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:17,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:17,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:17,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:39:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:18,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:18,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:18,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:18,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:18,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220483722] [2021-11-09 10:39:18,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:18,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726521012] [2021-11-09 10:39:18,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726521012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:18,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:18,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:39:18,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497519809] [2021-11-09 10:39:18,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:18,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:18,253 INFO L87 Difference]: Start difference. First operand 149 states and 187 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:18,333 INFO L93 Difference]: Finished difference Result 283 states and 359 transitions. [2021-11-09 10:39:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 10:39:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:18,336 INFO L225 Difference]: With dead ends: 283 [2021-11-09 10:39:18,337 INFO L226 Difference]: Without dead ends: 140 [2021-11-09 10:39:18,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-09 10:39:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 135. [2021-11-09 10:39:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.2769230769230768) internal successors, (166), 134 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 166 transitions. [2021-11-09 10:39:18,363 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 166 transitions. Word has length 56 [2021-11-09 10:39:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:18,363 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 166 transitions. [2021-11-09 10:39:18,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 166 transitions. [2021-11-09 10:39:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:39:18,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:18,370 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:18,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:18,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:18,592 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1567550038, now seen corresponding path program 1 times [2021-11-09 10:39:18,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:18,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407310920] [2021-11-09 10:39:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:18,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:18,627 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:18,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696974360] [2021-11-09 10:39:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:18,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:18,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:18,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:18,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 10:39:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:18,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:39:18,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:18,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:18,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:18,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407310920] [2021-11-09 10:39:18,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:18,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696974360] [2021-11-09 10:39:18,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696974360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:18,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:18,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:39:18,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634443626] [2021-11-09 10:39:18,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:39:18,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:39:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:18,972 INFO L87 Difference]: Start difference. First operand 135 states and 166 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:19,114 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2021-11-09 10:39:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:19,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 10:39:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:19,116 INFO L225 Difference]: With dead ends: 395 [2021-11-09 10:39:19,117 INFO L226 Difference]: Without dead ends: 266 [2021-11-09 10:39:19,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-09 10:39:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 158. [2021-11-09 10:39:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.2483660130718954) internal successors, (191), 157 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:19,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 191 transitions. [2021-11-09 10:39:19,126 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 191 transitions. Word has length 56 [2021-11-09 10:39:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:19,127 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 191 transitions. [2021-11-09 10:39:19,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 191 transitions. [2021-11-09 10:39:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:39:19,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:19,129 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:19,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:19,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:19,344 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:19,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:19,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2145970276, now seen corresponding path program 1 times [2021-11-09 10:39:19,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:19,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825906369] [2021-11-09 10:39:19,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:19,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:19,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:19,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126516881] [2021-11-09 10:39:19,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:19,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:19,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:19,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:19,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 10:39:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:19,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:39:19,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:19,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:19,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825906369] [2021-11-09 10:39:19,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:19,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126516881] [2021-11-09 10:39:19,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126516881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:19,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:19,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:39:19,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918757423] [2021-11-09 10:39:19,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:19,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:19,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:19,725 INFO L87 Difference]: Start difference. First operand 158 states and 191 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:19,768 INFO L93 Difference]: Finished difference Result 282 states and 343 transitions. [2021-11-09 10:39:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 10:39:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:19,772 INFO L225 Difference]: With dead ends: 282 [2021-11-09 10:39:19,772 INFO L226 Difference]: Without dead ends: 130 [2021-11-09 10:39:19,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:19,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-09 10:39:19,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-09 10:39:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.256198347107438) internal successors, (152), 125 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-11-09 10:39:19,780 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 56 [2021-11-09 10:39:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:19,781 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-11-09 10:39:19,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:19,781 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2021-11-09 10:39:19,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 10:39:19,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:19,785 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:19,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:19,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:19,996 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:19,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:19,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1590182292, now seen corresponding path program 1 times [2021-11-09 10:39:19,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:19,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107778036] [2021-11-09 10:39:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:19,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:20,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:20,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913679089] [2021-11-09 10:39:20,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:20,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:20,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:20,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:20,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 10:39:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:20,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:20,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:20,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107778036] [2021-11-09 10:39:20,382 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:20,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913679089] [2021-11-09 10:39:20,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913679089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:20,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:20,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:20,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013245244] [2021-11-09 10:39:20,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:20,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:20,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:20,385 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:20,422 INFO L93 Difference]: Finished difference Result 212 states and 253 transitions. [2021-11-09 10:39:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:20,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-09 10:39:20,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:20,424 INFO L225 Difference]: With dead ends: 212 [2021-11-09 10:39:20,424 INFO L226 Difference]: Without dead ends: 211 [2021-11-09 10:39:20,425 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:20,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-09 10:39:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2021-11-09 10:39:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 204 states have (on average 1.2254901960784315) internal successors, (250), 208 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:20,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 250 transitions. [2021-11-09 10:39:20,452 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 250 transitions. Word has length 56 [2021-11-09 10:39:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:20,452 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 250 transitions. [2021-11-09 10:39:20,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 250 transitions. [2021-11-09 10:39:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 10:39:20,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:20,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:20,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:20,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 10:39:20,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2051010371, now seen corresponding path program 1 times [2021-11-09 10:39:20,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:20,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534003145] [2021-11-09 10:39:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:20,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:20,693 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:20,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415734599] [2021-11-09 10:39:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:20,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:20,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:20,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:20,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 10:39:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:20,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:20,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:21,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:21,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534003145] [2021-11-09 10:39:21,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:21,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415734599] [2021-11-09 10:39:21,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415734599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:21,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:21,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:21,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316926612] [2021-11-09 10:39:21,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:21,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:21,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:21,092 INFO L87 Difference]: Start difference. First operand 209 states and 250 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:21,120 INFO L93 Difference]: Finished difference Result 209 states and 250 transitions. [2021-11-09 10:39:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-09 10:39:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:21,123 INFO L225 Difference]: With dead ends: 209 [2021-11-09 10:39:21,123 INFO L226 Difference]: Without dead ends: 208 [2021-11-09 10:39:21,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:21,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-09 10:39:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-09 10:39:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2205882352941178) internal successors, (249), 207 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2021-11-09 10:39:21,132 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 57 [2021-11-09 10:39:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:21,134 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2021-11-09 10:39:21,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:21,134 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2021-11-09 10:39:21,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 10:39:21,135 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:21,135 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:21,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:21,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:21,363 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:21,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1850265242, now seen corresponding path program 1 times [2021-11-09 10:39:21,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:21,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13875070] [2021-11-09 10:39:21,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:21,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:21,382 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:21,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971202906] [2021-11-09 10:39:21,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:21,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:21,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:21,383 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:21,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 10:39:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:21,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 10:39:21,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:21,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:21,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13875070] [2021-11-09 10:39:21,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:21,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971202906] [2021-11-09 10:39:21,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971202906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:21,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:21,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:39:21,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285485810] [2021-11-09 10:39:21,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:39:21,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:21,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:39:21,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:21,803 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:21,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:21,864 INFO L93 Difference]: Finished difference Result 328 states and 395 transitions. [2021-11-09 10:39:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:21,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 10:39:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:21,867 INFO L225 Difference]: With dead ends: 328 [2021-11-09 10:39:21,867 INFO L226 Difference]: Without dead ends: 299 [2021-11-09 10:39:21,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-11-09 10:39:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 210. [2021-11-09 10:39:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.2184466019417475) internal successors, (251), 209 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 251 transitions. [2021-11-09 10:39:21,877 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 251 transitions. Word has length 61 [2021-11-09 10:39:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:21,877 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 251 transitions. [2021-11-09 10:39:21,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 251 transitions. [2021-11-09 10:39:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 10:39:21,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:21,879 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:21,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:22,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:22,099 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1850587164, now seen corresponding path program 1 times [2021-11-09 10:39:22,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:22,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827353099] [2021-11-09 10:39:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:22,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:22,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:22,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238752363] [2021-11-09 10:39:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:22,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:22,113 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:22,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 10:39:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:39:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:22,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:22,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827353099] [2021-11-09 10:39:22,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:22,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238752363] [2021-11-09 10:39:22,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238752363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:22,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:22,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:22,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137819414] [2021-11-09 10:39:22,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:39:22,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:22,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:39:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:22,690 INFO L87 Difference]: Start difference. First operand 210 states and 251 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:22,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:22,754 INFO L93 Difference]: Finished difference Result 369 states and 448 transitions. [2021-11-09 10:39:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:22,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-09 10:39:22,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:22,756 INFO L225 Difference]: With dead ends: 369 [2021-11-09 10:39:22,756 INFO L226 Difference]: Without dead ends: 208 [2021-11-09 10:39:22,756 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:22,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-09 10:39:22,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2021-11-09 10:39:22,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2156862745098038) internal successors, (248), 207 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 248 transitions. [2021-11-09 10:39:22,777 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 248 transitions. Word has length 61 [2021-11-09 10:39:22,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:22,777 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 248 transitions. [2021-11-09 10:39:22,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:22,777 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 248 transitions. [2021-11-09 10:39:22,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-09 10:39:22,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:22,778 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:22,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:22,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-09 10:39:22,979 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:22,979 INFO L85 PathProgramCache]: Analyzing trace with hash 182245876, now seen corresponding path program 1 times [2021-11-09 10:39:22,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:22,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624377884] [2021-11-09 10:39:22,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:22,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:22,993 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:22,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204986019] [2021-11-09 10:39:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:22,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:22,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:22,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:22,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 10:39:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:23,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:39:23,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:23,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624377884] [2021-11-09 10:39:23,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:23,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204986019] [2021-11-09 10:39:23,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204986019] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:23,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:23,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:23,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356905952] [2021-11-09 10:39:23,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:39:23,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:39:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:23,607 INFO L87 Difference]: Start difference. First operand 208 states and 248 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:23,638 INFO L93 Difference]: Finished difference Result 372 states and 452 transitions. [2021-11-09 10:39:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-09 10:39:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:23,641 INFO L225 Difference]: With dead ends: 372 [2021-11-09 10:39:23,641 INFO L226 Difference]: Without dead ends: 210 [2021-11-09 10:39:23,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-09 10:39:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-11-09 10:39:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 206 states have (on average 1.2135922330097086) internal successors, (250), 209 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 250 transitions. [2021-11-09 10:39:23,650 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 250 transitions. Word has length 68 [2021-11-09 10:39:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:23,650 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 250 transitions. [2021-11-09 10:39:23,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 250 transitions. [2021-11-09 10:39:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 10:39:23,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:23,651 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:23,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:23,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 10:39:23,874 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1174858719, now seen corresponding path program 1 times [2021-11-09 10:39:23,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:23,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832627291] [2021-11-09 10:39:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:23,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:23,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:23,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780376214] [2021-11-09 10:39:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:23,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:23,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:23,908 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:23,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 10:39:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:24,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:39:24,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:39:24,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:24,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832627291] [2021-11-09 10:39:24,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:24,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780376214] [2021-11-09 10:39:24,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780376214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:24,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:24,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:24,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46385814] [2021-11-09 10:39:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:39:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:24,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:39:24,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:24,743 INFO L87 Difference]: Start difference. First operand 210 states and 250 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:24,784 INFO L93 Difference]: Finished difference Result 379 states and 460 transitions. [2021-11-09 10:39:24,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:39:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 10:39:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:24,786 INFO L225 Difference]: With dead ends: 379 [2021-11-09 10:39:24,786 INFO L226 Difference]: Without dead ends: 212 [2021-11-09 10:39:24,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:39:24,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-09 10:39:24,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-11-09 10:39:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 208 states have (on average 1.2115384615384615) internal successors, (252), 211 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 252 transitions. [2021-11-09 10:39:24,796 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 252 transitions. Word has length 69 [2021-11-09 10:39:24,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:24,796 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 252 transitions. [2021-11-09 10:39:24,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 252 transitions. [2021-11-09 10:39:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-09 10:39:24,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:24,798 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:24,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:25,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 10:39:25,024 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:25,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 31134581, now seen corresponding path program 1 times [2021-11-09 10:39:25,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:25,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136286554] [2021-11-09 10:39:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:25,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:25,036 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:25,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351690354] [2021-11-09 10:39:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:25,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:25,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:25,043 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:25,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 10:39:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:25,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:39:25,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 10:39:25,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:25,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136286554] [2021-11-09 10:39:25,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:25,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351690354] [2021-11-09 10:39:25,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351690354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:25,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:25,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:39:25,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281383738] [2021-11-09 10:39:25,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:25,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:25,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:25,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:25,598 INFO L87 Difference]: Start difference. First operand 212 states and 252 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:25,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:25,633 INFO L93 Difference]: Finished difference Result 382 states and 463 transitions. [2021-11-09 10:39:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:25,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-09 10:39:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:25,635 INFO L225 Difference]: With dead ends: 382 [2021-11-09 10:39:25,635 INFO L226 Difference]: Without dead ends: 214 [2021-11-09 10:39:25,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:25,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-09 10:39:25,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2021-11-09 10:39:25,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 210 states have (on average 1.2095238095238094) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-11-09 10:39:25,645 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 70 [2021-11-09 10:39:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:25,645 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-11-09 10:39:25,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2021-11-09 10:39:25,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-09 10:39:25,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:25,647 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:25,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:25,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-09 10:39:25,852 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:25,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:25,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1064575329, now seen corresponding path program 2 times [2021-11-09 10:39:25,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:25,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645585850] [2021-11-09 10:39:25,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:25,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:25,863 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:25,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075414388] [2021-11-09 10:39:25,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:39:25,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:25,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:25,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:25,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 10:39:27,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:39:27,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:27,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:39:27,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:39:27,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:27,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645585850] [2021-11-09 10:39:27,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:27,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075414388] [2021-11-09 10:39:27,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075414388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:27,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:27,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:39:27,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824950503] [2021-11-09 10:39:27,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:39:27,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:39:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:27,951 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:28,007 INFO L93 Difference]: Finished difference Result 381 states and 461 transitions. [2021-11-09 10:39:28,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:39:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-09 10:39:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:28,009 INFO L225 Difference]: With dead ends: 381 [2021-11-09 10:39:28,010 INFO L226 Difference]: Without dead ends: 216 [2021-11-09 10:39:28,010 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-09 10:39:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-09 10:39:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 212 states have (on average 1.2075471698113207) internal successors, (256), 215 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:28,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 256 transitions. [2021-11-09 10:39:28,019 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 256 transitions. Word has length 71 [2021-11-09 10:39:28,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:28,020 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 256 transitions. [2021-11-09 10:39:28,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:28,020 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 256 transitions. [2021-11-09 10:39:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-09 10:39:28,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:28,021 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:28,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:28,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:28,228 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:28,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1178107028, now seen corresponding path program 3 times [2021-11-09 10:39:28,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:28,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93558684] [2021-11-09 10:39:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:28,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:28,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:28,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1820561098] [2021-11-09 10:39:28,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:39:28,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:28,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:28,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 10:39:28,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:39:28,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:28,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:39:28,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:29,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:39:29,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:29,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93558684] [2021-11-09 10:39:29,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:29,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820561098] [2021-11-09 10:39:29,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820561098] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:29,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:29,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:39:29,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155746714] [2021-11-09 10:39:29,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:39:29,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:29,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:39:29,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:29,146 INFO L87 Difference]: Start difference. First operand 216 states and 256 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:29,206 INFO L93 Difference]: Finished difference Result 309 states and 364 transitions. [2021-11-09 10:39:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:29,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-09 10:39:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:29,209 INFO L225 Difference]: With dead ends: 309 [2021-11-09 10:39:29,209 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 10:39:29,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:29,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 10:39:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 219. [2021-11-09 10:39:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 215 states have (on average 1.2046511627906977) internal successors, (259), 218 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2021-11-09 10:39:29,222 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 72 [2021-11-09 10:39:29,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:29,223 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2021-11-09 10:39:29,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2021-11-09 10:39:29,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:39:29,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:29,225 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:29,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:29,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:29,441 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:29,441 INFO L85 PathProgramCache]: Analyzing trace with hash -916715049, now seen corresponding path program 1 times [2021-11-09 10:39:29,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:29,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16300918] [2021-11-09 10:39:29,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:29,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:29,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:29,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450765928] [2021-11-09 10:39:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:29,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:29,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:29,473 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:29,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 10:39:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:29,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:39:29,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:39:30,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:30,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16300918] [2021-11-09 10:39:30,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:30,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450765928] [2021-11-09 10:39:30,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450765928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:30,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:30,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:39:30,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539467624] [2021-11-09 10:39:30,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:39:30,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:30,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:39:30,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:30,271 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:30,330 INFO L93 Difference]: Finished difference Result 308 states and 363 transitions. [2021-11-09 10:39:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:39:30,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 10:39:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:30,333 INFO L225 Difference]: With dead ends: 308 [2021-11-09 10:39:30,333 INFO L226 Difference]: Without dead ends: 307 [2021-11-09 10:39:30,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:39:30,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-09 10:39:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2021-11-09 10:39:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 302 states have (on average 1.195364238410596) internal successors, (361), 305 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 361 transitions. [2021-11-09 10:39:30,348 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 361 transitions. Word has length 122 [2021-11-09 10:39:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:30,348 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 361 transitions. [2021-11-09 10:39:30,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 361 transitions. [2021-11-09 10:39:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 10:39:30,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:30,350 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:30,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:30,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:30,564 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:30,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1843375909, now seen corresponding path program 1 times [2021-11-09 10:39:30,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:30,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552221515] [2021-11-09 10:39:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:30,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:30,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:30,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482597114] [2021-11-09 10:39:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:30,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:30,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:30,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:30,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 10:39:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:31,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:39:31,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:39:31,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:31,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552221515] [2021-11-09 10:39:31,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:31,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482597114] [2021-11-09 10:39:31,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482597114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:31,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:31,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:39:31,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332689512] [2021-11-09 10:39:31,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:39:31,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:31,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:39:31,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:39:31,424 INFO L87 Difference]: Start difference. First operand 306 states and 361 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:31,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:31,513 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2021-11-09 10:39:31,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:39:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-09 10:39:31,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:31,517 INFO L225 Difference]: With dead ends: 430 [2021-11-09 10:39:31,517 INFO L226 Difference]: Without dead ends: 401 [2021-11-09 10:39:31,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:39:31,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-09 10:39:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 308. [2021-11-09 10:39:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 304 states have (on average 1.194078947368421) internal successors, (363), 307 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 363 transitions. [2021-11-09 10:39:31,532 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 363 transitions. Word has length 127 [2021-11-09 10:39:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:31,532 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 363 transitions. [2021-11-09 10:39:31,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 363 transitions. [2021-11-09 10:39:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 10:39:31,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:31,535 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:31,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:31,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 10:39:31,756 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1843697831, now seen corresponding path program 1 times [2021-11-09 10:39:31,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:31,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227896427] [2021-11-09 10:39:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:31,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:31,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:31,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740401149] [2021-11-09 10:39:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:31,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:31,804 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:31,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 10:39:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:33,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:39:33,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-09 10:39:33,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:33,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227896427] [2021-11-09 10:39:33,649 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:33,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740401149] [2021-11-09 10:39:33,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740401149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:33,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:33,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 10:39:33,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357383695] [2021-11-09 10:39:33,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:39:33,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:33,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:39:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:39:33,652 INFO L87 Difference]: Start difference. First operand 308 states and 363 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:33,776 INFO L93 Difference]: Finished difference Result 1015 states and 1218 transitions. [2021-11-09 10:39:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:39:33,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-09 10:39:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:33,781 INFO L225 Difference]: With dead ends: 1015 [2021-11-09 10:39:33,781 INFO L226 Difference]: Without dead ends: 757 [2021-11-09 10:39:33,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:39:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-11-09 10:39:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 311. [2021-11-09 10:39:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 307 states have (on average 1.1921824104234529) internal successors, (366), 310 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 366 transitions. [2021-11-09 10:39:33,803 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 366 transitions. Word has length 127 [2021-11-09 10:39:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:33,803 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 366 transitions. [2021-11-09 10:39:33,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 366 transitions. [2021-11-09 10:39:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-09 10:39:33,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:33,806 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:33,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:34,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 10:39:34,015 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash -470179250, now seen corresponding path program 2 times [2021-11-09 10:39:34,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:34,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844397568] [2021-11-09 10:39:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:34,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:34,033 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:34,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017908933] [2021-11-09 10:39:34,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:39:34,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:34,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:34,035 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:34,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 10:39:34,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:39:34,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:34,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:39:34,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-09 10:39:35,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:35,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844397568] [2021-11-09 10:39:35,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:35,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017908933] [2021-11-09 10:39:35,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017908933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:35,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:35,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 10:39:35,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020379061] [2021-11-09 10:39:35,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:39:35,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:35,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:39:35,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:35,161 INFO L87 Difference]: Start difference. First operand 311 states and 366 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:35,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:35,225 INFO L93 Difference]: Finished difference Result 580 states and 692 transitions. [2021-11-09 10:39:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:35,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-09 10:39:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:35,228 INFO L225 Difference]: With dead ends: 580 [2021-11-09 10:39:35,228 INFO L226 Difference]: Without dead ends: 314 [2021-11-09 10:39:35,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-09 10:39:35,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-09 10:39:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 1.1903225806451614) internal successors, (369), 313 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 369 transitions. [2021-11-09 10:39:35,244 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 369 transitions. Word has length 128 [2021-11-09 10:39:35,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:35,244 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 369 transitions. [2021-11-09 10:39:35,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 369 transitions. [2021-11-09 10:39:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 10:39:35,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:35,246 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:35,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:35,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 10:39:35,472 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash -841333512, now seen corresponding path program 3 times [2021-11-09 10:39:35,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:35,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986287373] [2021-11-09 10:39:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:35,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:35,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:35,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579192935] [2021-11-09 10:39:35,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:39:35,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:35,495 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:35,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 10:39:43,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:39:43,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:43,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:39:43,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 10:39:44,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:44,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986287373] [2021-11-09 10:39:44,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:44,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579192935] [2021-11-09 10:39:44,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579192935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:44,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:44,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:39:44,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940673550] [2021-11-09 10:39:44,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:39:44,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:39:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:44,007 INFO L87 Difference]: Start difference. First operand 314 states and 369 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:44,095 INFO L93 Difference]: Finished difference Result 314 states and 369 transitions. [2021-11-09 10:39:44,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:44,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-09 10:39:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:44,098 INFO L225 Difference]: With dead ends: 314 [2021-11-09 10:39:44,098 INFO L226 Difference]: Without dead ends: 313 [2021-11-09 10:39:44,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:39:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-09 10:39:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2021-11-09 10:39:44,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 310 states have (on average 1.1870967741935483) internal successors, (368), 312 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 368 transitions. [2021-11-09 10:39:44,128 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 368 transitions. Word has length 129 [2021-11-09 10:39:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:44,128 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 368 transitions. [2021-11-09 10:39:44,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 368 transitions. [2021-11-09 10:39:44,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-09 10:39:44,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:44,132 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:44,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:44,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:44,348 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:44,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1481863483, now seen corresponding path program 2 times [2021-11-09 10:39:44,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:44,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12643237] [2021-11-09 10:39:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:44,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:44,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:44,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915318617] [2021-11-09 10:39:44,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:39:44,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:44,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:44,387 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:44,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 10:39:44,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:39:44,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:44,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:44,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-09 10:39:45,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:45,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12643237] [2021-11-09 10:39:45,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:45,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915318617] [2021-11-09 10:39:45,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915318617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:45,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:45,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:39:45,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296604560] [2021-11-09 10:39:45,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:45,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:45,334 INFO L87 Difference]: Start difference. First operand 313 states and 368 transitions. Second operand has 4 states, 3 states have (on average 41.0) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:45,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:45,376 INFO L93 Difference]: Finished difference Result 313 states and 368 transitions. [2021-11-09 10:39:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 41.0) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-09 10:39:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:45,380 INFO L225 Difference]: With dead ends: 313 [2021-11-09 10:39:45,380 INFO L226 Difference]: Without dead ends: 312 [2021-11-09 10:39:45,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-09 10:39:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-11-09 10:39:45,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 310 states have (on average 1.1838709677419355) internal successors, (367), 311 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 367 transitions. [2021-11-09 10:39:45,401 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 367 transitions. Word has length 179 [2021-11-09 10:39:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:45,402 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 367 transitions. [2021-11-09 10:39:45,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 41.0) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 367 transitions. [2021-11-09 10:39:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-09 10:39:45,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:45,405 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:45,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:45,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:45,620 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 861267959, now seen corresponding path program 2 times [2021-11-09 10:39:45,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:45,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974550287] [2021-11-09 10:39:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:45,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:45,651 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:45,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341922810] [2021-11-09 10:39:45,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:39:45,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:45,652 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 10:39:46,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:39:46,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:46,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:46,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-09 10:39:46,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:46,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974550287] [2021-11-09 10:39:46,883 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:46,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341922810] [2021-11-09 10:39:46,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341922810] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:46,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:46,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:39:46,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125811300] [2021-11-09 10:39:46,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:46,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:46,886 INFO L87 Difference]: Start difference. First operand 312 states and 367 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:46,951 INFO L93 Difference]: Finished difference Result 338 states and 403 transitions. [2021-11-09 10:39:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:39:46,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 184 [2021-11-09 10:39:46,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:46,954 INFO L225 Difference]: With dead ends: 338 [2021-11-09 10:39:46,954 INFO L226 Difference]: Without dead ends: 337 [2021-11-09 10:39:46,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:46,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-09 10:39:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 314. [2021-11-09 10:39:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 312 states have (on average 1.1826923076923077) internal successors, (369), 313 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 369 transitions. [2021-11-09 10:39:46,978 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 369 transitions. Word has length 184 [2021-11-09 10:39:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:46,978 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 369 transitions. [2021-11-09 10:39:46,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:46,979 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 369 transitions. [2021-11-09 10:39:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 10:39:46,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:46,982 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:47,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:47,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-09 10:39:47,201 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash 929503394, now seen corresponding path program 1 times [2021-11-09 10:39:47,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:47,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668992267] [2021-11-09 10:39:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:47,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:47,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:47,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742003435] [2021-11-09 10:39:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:47,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:47,245 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:47,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 10:39:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:47,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 10:39:47,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 10:39:48,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:48,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668992267] [2021-11-09 10:39:48,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:48,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742003435] [2021-11-09 10:39:48,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742003435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:48,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:48,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 10:39:48,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498428454] [2021-11-09 10:39:48,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:39:48,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:39:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:39:48,528 INFO L87 Difference]: Start difference. First operand 314 states and 369 transitions. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:48,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:48,646 INFO L93 Difference]: Finished difference Result 532 states and 628 transitions. [2021-11-09 10:39:48,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:39:48,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-09 10:39:48,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:48,653 INFO L225 Difference]: With dead ends: 532 [2021-11-09 10:39:48,653 INFO L226 Difference]: Without dead ends: 501 [2021-11-09 10:39:48,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:39:48,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-09 10:39:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 408. [2021-11-09 10:39:48,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 406 states have (on average 1.1773399014778325) internal successors, (478), 407 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:48,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 478 transitions. [2021-11-09 10:39:48,679 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 478 transitions. Word has length 185 [2021-11-09 10:39:48,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:48,680 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 478 transitions. [2021-11-09 10:39:48,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 478 transitions. [2021-11-09 10:39:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 10:39:48,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:48,684 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:48,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:48,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:48,903 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 380057375, now seen corresponding path program 2 times [2021-11-09 10:39:48,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:48,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936889959] [2021-11-09 10:39:48,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:48,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:48,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:48,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342240249] [2021-11-09 10:39:48,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:39:48,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:48,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:48,941 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:48,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 10:39:49,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 10:39:49,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:49,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:39:49,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-11-09 10:39:50,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:50,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936889959] [2021-11-09 10:39:50,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:50,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342240249] [2021-11-09 10:39:50,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342240249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:39:50,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:39:50,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:39:50,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862030337] [2021-11-09 10:39:50,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:39:50,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:39:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:39:50,381 INFO L87 Difference]: Start difference. First operand 408 states and 478 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:50,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:50,424 INFO L93 Difference]: Finished difference Result 408 states and 478 transitions. [2021-11-09 10:39:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:39:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-11-09 10:39:50,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:50,428 INFO L225 Difference]: With dead ends: 408 [2021-11-09 10:39:50,428 INFO L226 Difference]: Without dead ends: 407 [2021-11-09 10:39:50,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:39:50,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-09 10:39:50,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-11-09 10:39:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.1748768472906403) internal successors, (477), 406 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:50,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 477 transitions. [2021-11-09 10:39:50,456 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 477 transitions. Word has length 240 [2021-11-09 10:39:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:50,456 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 477 transitions. [2021-11-09 10:39:50,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 477 transitions. [2021-11-09 10:39:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-09 10:39:50,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:50,459 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:50,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:50,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:50,684 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1096121545, now seen corresponding path program 1 times [2021-11-09 10:39:50,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:50,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256535338] [2021-11-09 10:39:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:50,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:50,720 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:50,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407750053] [2021-11-09 10:39:50,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:50,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:50,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:50,723 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:50,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 10:39:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:39:51,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 10:39:51,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 10:39:52,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:52,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256535338] [2021-11-09 10:39:52,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:52,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407750053] [2021-11-09 10:39:52,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407750053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:52,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:52,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 10:39:52,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940918349] [2021-11-09 10:39:52,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 10:39:52,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 10:39:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:39:52,219 INFO L87 Difference]: Start difference. First operand 407 states and 477 transitions. Second operand has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:52,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:52,354 INFO L93 Difference]: Finished difference Result 624 states and 735 transitions. [2021-11-09 10:39:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:39:52,355 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2021-11-09 10:39:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:52,359 INFO L225 Difference]: With dead ends: 624 [2021-11-09 10:39:52,359 INFO L226 Difference]: Without dead ends: 594 [2021-11-09 10:39:52,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:39:52,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-09 10:39:52,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 501. [2021-11-09 10:39:52,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.172) internal successors, (586), 500 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:52,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 586 transitions. [2021-11-09 10:39:52,412 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 586 transitions. Word has length 247 [2021-11-09 10:39:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:52,413 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 586 transitions. [2021-11-09 10:39:52,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.0) internal successors, (242), 11 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 586 transitions. [2021-11-09 10:39:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-09 10:39:52,415 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:52,416 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:52,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:52,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:52,632 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:52,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1356288378, now seen corresponding path program 2 times [2021-11-09 10:39:52,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:52,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716515508] [2021-11-09 10:39:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:52,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:52,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:52,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893496756] [2021-11-09 10:39:52,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:39:52,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:52,674 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 10:39:53,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:39:53,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:53,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 10:39:53,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 547 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 10:39:54,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:54,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716515508] [2021-11-09 10:39:54,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:54,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893496756] [2021-11-09 10:39:54,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893496756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:54,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:54,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 10:39:54,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047280087] [2021-11-09 10:39:54,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 10:39:54,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:54,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 10:39:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 10:39:54,517 INFO L87 Difference]: Start difference. First operand 501 states and 586 transitions. Second operand has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:54,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:54,715 INFO L93 Difference]: Finished difference Result 718 states and 844 transitions. [2021-11-09 10:39:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 10:39:54,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 302 [2021-11-09 10:39:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:54,721 INFO L225 Difference]: With dead ends: 718 [2021-11-09 10:39:54,722 INFO L226 Difference]: Without dead ends: 688 [2021-11-09 10:39:54,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:39:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-09 10:39:54,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 595. [2021-11-09 10:39:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 594 states have (on average 1.17003367003367) internal successors, (695), 594 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 695 transitions. [2021-11-09 10:39:54,769 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 695 transitions. Word has length 302 [2021-11-09 10:39:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:54,770 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 695 transitions. [2021-11-09 10:39:54,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.846153846153847) internal successors, (297), 13 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 695 transitions. [2021-11-09 10:39:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-09 10:39:54,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:54,775 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:54,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:54,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 10:39:54,999 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:54,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:54,999 INFO L85 PathProgramCache]: Analyzing trace with hash 988646441, now seen corresponding path program 3 times [2021-11-09 10:39:55,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:55,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103101284] [2021-11-09 10:39:55,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:55,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:55,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:55,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704905379] [2021-11-09 10:39:55,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:39:55,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:55,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:55,030 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:55,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 10:39:55,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:39:55,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:55,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:39:55,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:39:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-09 10:39:56,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:39:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103101284] [2021-11-09 10:39:56,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:39:56,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704905379] [2021-11-09 10:39:56,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704905379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:39:56,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:39:56,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 10:39:56,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868155624] [2021-11-09 10:39:56,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:39:56,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:39:56,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:39:56,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:39:56,968 INFO L87 Difference]: Start difference. First operand 595 states and 695 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:39:57,069 INFO L93 Difference]: Finished difference Result 644 states and 764 transitions. [2021-11-09 10:39:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:39:57,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 357 [2021-11-09 10:39:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:39:57,080 INFO L225 Difference]: With dead ends: 644 [2021-11-09 10:39:57,080 INFO L226 Difference]: Without dead ends: 643 [2021-11-09 10:39:57,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:39:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-09 10:39:57,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 621. [2021-11-09 10:39:57,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 1.179032258064516) internal successors, (731), 620 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:57,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 731 transitions. [2021-11-09 10:39:57,131 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 731 transitions. Word has length 357 [2021-11-09 10:39:57,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:39:57,132 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 731 transitions. [2021-11-09 10:39:57,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:39:57,132 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 731 transitions. [2021-11-09 10:39:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2021-11-09 10:39:57,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:39:57,137 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:39:57,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 10:39:57,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-09 10:39:57,364 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:39:57,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:39:57,365 INFO L85 PathProgramCache]: Analyzing trace with hash -109984744, now seen corresponding path program 4 times [2021-11-09 10:39:57,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:39:57,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781084324] [2021-11-09 10:39:57,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:39:57,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:39:57,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:39:57,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429599150] [2021-11-09 10:39:57,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 10:39:57,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:39:57,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:39:57,432 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:39:57,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 10:39:59,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 10:39:59,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:39:59,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1060 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 10:39:59,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-09 10:40:00,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:00,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781084324] [2021-11-09 10:40:00,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:00,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429599150] [2021-11-09 10:40:00,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429599150] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:00,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:00,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:40:00,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081389727] [2021-11-09 10:40:00,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:40:00,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:40:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:40:00,683 INFO L87 Difference]: Start difference. First operand 621 states and 731 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:00,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:00,824 INFO L93 Difference]: Finished difference Result 670 states and 800 transitions. [2021-11-09 10:40:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 10:40:00,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 365 [2021-11-09 10:40:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:00,835 INFO L225 Difference]: With dead ends: 670 [2021-11-09 10:40:00,835 INFO L226 Difference]: Without dead ends: 669 [2021-11-09 10:40:00,835 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-11-09 10:40:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-11-09 10:40:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 647. [2021-11-09 10:40:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.1873065015479876) internal successors, (767), 646 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 767 transitions. [2021-11-09 10:40:00,880 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 767 transitions. Word has length 365 [2021-11-09 10:40:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:00,880 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 767 transitions. [2021-11-09 10:40:00,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 767 transitions. [2021-11-09 10:40:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-11-09 10:40:00,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:00,885 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:00,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-09 10:40:01,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 10:40:01,098 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:01,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash 330472711, now seen corresponding path program 5 times [2021-11-09 10:40:01,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:01,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112271838] [2021-11-09 10:40:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:01,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:01,124 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:01,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166629668] [2021-11-09 10:40:01,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 10:40:01,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:01,126 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:01,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 10:40:02,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-09 10:40:02,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:02,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:40:02,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 191 proven. 6 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2021-11-09 10:40:03,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:03,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112271838] [2021-11-09 10:40:03,203 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:03,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166629668] [2021-11-09 10:40:03,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166629668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:03,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:03,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 10:40:03,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871127735] [2021-11-09 10:40:03,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:40:03,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:03,206 INFO L87 Difference]: Start difference. First operand 647 states and 767 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:03,279 INFO L93 Difference]: Finished difference Result 1254 states and 1499 transitions. [2021-11-09 10:40:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:40:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2021-11-09 10:40:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:03,284 INFO L225 Difference]: With dead ends: 1254 [2021-11-09 10:40:03,284 INFO L226 Difference]: Without dead ends: 653 [2021-11-09 10:40:03,286 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-11-09 10:40:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 653. [2021-11-09 10:40:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.1855828220858895) internal successors, (773), 652 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 773 transitions. [2021-11-09 10:40:03,355 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 773 transitions. Word has length 373 [2021-11-09 10:40:03,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:03,355 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 773 transitions. [2021-11-09 10:40:03,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 773 transitions. [2021-11-09 10:40:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-09 10:40:03,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:03,359 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:03,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:03,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 10:40:03,570 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:03,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1342291811, now seen corresponding path program 6 times [2021-11-09 10:40:03,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:03,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454814290] [2021-11-09 10:40:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:03,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:03,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:03,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76981438] [2021-11-09 10:40:03,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 10:40:03,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:03,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:03,593 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 10:40:04,801 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-09 10:40:04,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:04,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:40:04,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2021-11-09 10:40:05,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:05,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454814290] [2021-11-09 10:40:05,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:05,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76981438] [2021-11-09 10:40:05,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76981438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:05,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:05,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:40:05,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672566149] [2021-11-09 10:40:05,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:40:05,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:40:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:40:05,636 INFO L87 Difference]: Start difference. First operand 653 states and 773 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:05,760 INFO L93 Difference]: Finished difference Result 720 states and 860 transitions. [2021-11-09 10:40:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:40:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-09 10:40:05,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:05,765 INFO L225 Difference]: With dead ends: 720 [2021-11-09 10:40:05,765 INFO L226 Difference]: Without dead ends: 719 [2021-11-09 10:40:05,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:40:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2021-11-09 10:40:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 692. [2021-11-09 10:40:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.2040520984081042) internal successors, (832), 691 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:05,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 832 transitions. [2021-11-09 10:40:05,814 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 832 transitions. Word has length 374 [2021-11-09 10:40:05,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:05,815 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 832 transitions. [2021-11-09 10:40:05,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:05,815 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 832 transitions. [2021-11-09 10:40:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-09 10:40:05,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:05,819 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:05,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:06,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:06,036 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash 761960431, now seen corresponding path program 1 times [2021-11-09 10:40:06,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:06,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720919624] [2021-11-09 10:40:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:06,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:06,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:06,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074518391] [2021-11-09 10:40:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:06,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:06,113 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:06,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 10:40:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:07,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 10:40:07,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 0 proven. 821 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:40:08,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:08,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720919624] [2021-11-09 10:40:08,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:08,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074518391] [2021-11-09 10:40:08,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074518391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:08,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:08,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 10:40:08,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428277263] [2021-11-09 10:40:08,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 10:40:08,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:08,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 10:40:08,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:40:08,753 INFO L87 Difference]: Start difference. First operand 692 states and 832 transitions. Second operand has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:08,961 INFO L93 Difference]: Finished difference Result 1002 states and 1223 transitions. [2021-11-09 10:40:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 10:40:08,962 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 375 [2021-11-09 10:40:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:08,968 INFO L225 Difference]: With dead ends: 1002 [2021-11-09 10:40:08,968 INFO L226 Difference]: Without dead ends: 881 [2021-11-09 10:40:08,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:40:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-11-09 10:40:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 787. [2021-11-09 10:40:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 786 states have (on average 1.1984732824427482) internal successors, (942), 786 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 942 transitions. [2021-11-09 10:40:09,053 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 942 transitions. Word has length 375 [2021-11-09 10:40:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:09,054 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 942 transitions. [2021-11-09 10:40:09,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.666666666666668) internal successors, (355), 15 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 942 transitions. [2021-11-09 10:40:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-11-09 10:40:09,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:09,059 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:09,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:09,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:09,272 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:09,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 818521342, now seen corresponding path program 2 times [2021-11-09 10:40:09,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:09,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747314615] [2021-11-09 10:40:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:09,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:09,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:09,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1844953024] [2021-11-09 10:40:09,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:40:09,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:09,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:09,321 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:09,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 10:40:10,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:40:10,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:10,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 10:40:10,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:40:12,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:12,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747314615] [2021-11-09 10:40:12,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:12,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844953024] [2021-11-09 10:40:12,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844953024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:12,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:12,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-09 10:40:12,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165322995] [2021-11-09 10:40:12,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-09 10:40:12,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-09 10:40:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-09 10:40:12,116 INFO L87 Difference]: Start difference. First operand 787 states and 942 transitions. Second operand has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:12,409 INFO L93 Difference]: Finished difference Result 1097 states and 1333 transitions. [2021-11-09 10:40:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 10:40:12,410 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2021-11-09 10:40:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:12,417 INFO L225 Difference]: With dead ends: 1097 [2021-11-09 10:40:12,418 INFO L226 Difference]: Without dead ends: 976 [2021-11-09 10:40:12,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:40:12,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2021-11-09 10:40:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 882. [2021-11-09 10:40:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 881 states have (on average 1.1940976163450625) internal successors, (1052), 881 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1052 transitions. [2021-11-09 10:40:12,483 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1052 transitions. Word has length 430 [2021-11-09 10:40:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:12,486 INFO L470 AbstractCegarLoop]: Abstraction has 882 states and 1052 transitions. [2021-11-09 10:40:12,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 24.11764705882353) internal successors, (410), 17 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:12,486 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1052 transitions. [2021-11-09 10:40:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-09 10:40:12,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:12,494 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:12,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-11-09 10:40:12,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:12,708 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1659818767, now seen corresponding path program 3 times [2021-11-09 10:40:12,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:12,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494539838] [2021-11-09 10:40:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:12,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:12,742 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:12,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406202020] [2021-11-09 10:40:12,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:40:12,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:12,750 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:12,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-09 10:40:14,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:40:14,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:14,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:40:14,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2021-11-09 10:40:15,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:15,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494539838] [2021-11-09 10:40:15,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:15,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406202020] [2021-11-09 10:40:15,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406202020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:15,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:15,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:40:15,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859219717] [2021-11-09 10:40:15,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:40:15,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:15,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:15,508 INFO L87 Difference]: Start difference. First operand 882 states and 1052 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:15,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:15,677 INFO L93 Difference]: Finished difference Result 989 states and 1199 transitions. [2021-11-09 10:40:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:40:15,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 485 [2021-11-09 10:40:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:15,684 INFO L225 Difference]: With dead ends: 989 [2021-11-09 10:40:15,684 INFO L226 Difference]: Without dead ends: 988 [2021-11-09 10:40:15,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:40:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-09 10:40:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 920. [2021-11-09 10:40:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 1.2078346028291622) internal successors, (1110), 919 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1110 transitions. [2021-11-09 10:40:15,740 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1110 transitions. Word has length 485 [2021-11-09 10:40:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:15,741 INFO L470 AbstractCegarLoop]: Abstraction has 920 states and 1110 transitions. [2021-11-09 10:40:15,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1110 transitions. [2021-11-09 10:40:15,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-11-09 10:40:15,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:15,746 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:15,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:15,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:15,961 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash 133646370, now seen corresponding path program 1 times [2021-11-09 10:40:15,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:15,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948516591] [2021-11-09 10:40:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:15,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:15,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:15,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110837746] [2021-11-09 10:40:15,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:15,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:15,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:15,996 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:15,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-09 10:40:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:17,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 10:40:17,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1578 backedges. 0 proven. 1534 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:40:19,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:19,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948516591] [2021-11-09 10:40:19,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:19,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110837746] [2021-11-09 10:40:19,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110837746] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:19,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:19,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-09 10:40:19,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685673902] [2021-11-09 10:40:19,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 10:40:19,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:19,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 10:40:19,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-11-09 10:40:19,292 INFO L87 Difference]: Start difference. First operand 920 states and 1110 transitions. Second operand has 19 states, 19 states have (on average 24.63157894736842) internal successors, (468), 19 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:19,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:19,572 INFO L93 Difference]: Finished difference Result 1268 states and 1559 transitions. [2021-11-09 10:40:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:40:19,572 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 24.63157894736842) internal successors, (468), 19 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2021-11-09 10:40:19,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:19,578 INFO L225 Difference]: With dead ends: 1268 [2021-11-09 10:40:19,578 INFO L226 Difference]: Without dead ends: 1109 [2021-11-09 10:40:19,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=479, Unknown=0, NotChecked=0, Total=702 [2021-11-09 10:40:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-09 10:40:19,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1015. [2021-11-09 10:40:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 1014 states have (on average 1.2031558185404339) internal successors, (1220), 1014 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1220 transitions. [2021-11-09 10:40:19,643 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1220 transitions. Word has length 487 [2021-11-09 10:40:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:19,644 INFO L470 AbstractCegarLoop]: Abstraction has 1015 states and 1220 transitions. [2021-11-09 10:40:19,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 24.63157894736842) internal successors, (468), 19 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1220 transitions. [2021-11-09 10:40:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2021-11-09 10:40:19,650 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:19,650 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:19,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:19,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:19,876 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1666736945, now seen corresponding path program 2 times [2021-11-09 10:40:19,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:19,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8476618] [2021-11-09 10:40:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:19,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:19,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:19,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1001103497] [2021-11-09 10:40:19,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:40:19,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:19,926 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:19,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-09 10:40:22,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:40:22,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:22,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 10:40:22,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 0 proven. 1973 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-09 10:40:23,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:23,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8476618] [2021-11-09 10:40:23,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:23,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001103497] [2021-11-09 10:40:23,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001103497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:23,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:23,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-11-09 10:40:23,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904624954] [2021-11-09 10:40:23,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 10:40:23,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:23,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 10:40:23,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:40:23,657 INFO L87 Difference]: Start difference. First operand 1015 states and 1220 transitions. Second operand has 21 states, 21 states have (on average 24.904761904761905) internal successors, (523), 21 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:23,929 INFO L93 Difference]: Finished difference Result 1269 states and 1560 transitions. [2021-11-09 10:40:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 10:40:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.904761904761905) internal successors, (523), 21 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 542 [2021-11-09 10:40:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:23,943 INFO L225 Difference]: With dead ends: 1269 [2021-11-09 10:40:23,944 INFO L226 Difference]: Without dead ends: 1110 [2021-11-09 10:40:23,945 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-09 10:40:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-09 10:40:24,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2021-11-09 10:40:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1109 states have (on average 1.1992786293958522) internal successors, (1330), 1109 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1330 transitions. [2021-11-09 10:40:24,013 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1330 transitions. Word has length 542 [2021-11-09 10:40:24,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:24,014 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1330 transitions. [2021-11-09 10:40:24,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.904761904761905) internal successors, (523), 21 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1330 transitions. [2021-11-09 10:40:24,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-11-09 10:40:24,020 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:24,020 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:24,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-11-09 10:40:24,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-09 10:40:24,240 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash -607927486, now seen corresponding path program 3 times [2021-11-09 10:40:24,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:24,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117440605] [2021-11-09 10:40:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:24,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:24,273 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:24,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108978687] [2021-11-09 10:40:24,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:40:24,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:24,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:24,274 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:24,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-09 10:40:26,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:40:26,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:26,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:40:26,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2511 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2496 trivial. 0 not checked. [2021-11-09 10:40:27,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:27,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117440605] [2021-11-09 10:40:27,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:27,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108978687] [2021-11-09 10:40:27,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108978687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:27,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:27,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:40:27,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516241837] [2021-11-09 10:40:27,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:40:27,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:27,686 INFO L87 Difference]: Start difference. First operand 1110 states and 1330 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:27,845 INFO L93 Difference]: Finished difference Result 1217 states and 1477 transitions. [2021-11-09 10:40:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:40:27,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 597 [2021-11-09 10:40:27,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:27,853 INFO L225 Difference]: With dead ends: 1217 [2021-11-09 10:40:27,853 INFO L226 Difference]: Without dead ends: 1216 [2021-11-09 10:40:27,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:40:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2021-11-09 10:40:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1131. [2021-11-09 10:40:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.204424778761062) internal successors, (1361), 1130 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:27,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1361 transitions. [2021-11-09 10:40:27,924 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1361 transitions. Word has length 597 [2021-11-09 10:40:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:27,926 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1361 transitions. [2021-11-09 10:40:27,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1361 transitions. [2021-11-09 10:40:27,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2021-11-09 10:40:27,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:27,963 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:28,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:28,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-09 10:40:28,188 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:28,189 INFO L85 PathProgramCache]: Analyzing trace with hash 666394721, now seen corresponding path program 1 times [2021-11-09 10:40:28,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:28,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888963075] [2021-11-09 10:40:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:28,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:28,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:28,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1939306316] [2021-11-09 10:40:28,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:28,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:28,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:28,244 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:28,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-09 10:40:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:30,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 10:40:30,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2514 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:40:32,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:32,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888963075] [2021-11-09 10:40:32,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:32,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939306316] [2021-11-09 10:40:32,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939306316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:32,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:32,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 10:40:32,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622943092] [2021-11-09 10:40:32,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 10:40:32,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 10:40:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:40:32,388 INFO L87 Difference]: Start difference. First operand 1131 states and 1361 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:32,576 INFO L93 Difference]: Finished difference Result 1339 states and 1649 transitions. [2021-11-09 10:40:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 10:40:32,576 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2021-11-09 10:40:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:32,584 INFO L225 Difference]: With dead ends: 1339 [2021-11-09 10:40:32,584 INFO L226 Difference]: Without dead ends: 1338 [2021-11-09 10:40:32,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-09 10:40:32,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-09 10:40:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1220. [2021-11-09 10:40:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.2223133716160788) internal successors, (1490), 1219 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1490 transitions. [2021-11-09 10:40:32,659 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1490 transitions. Word has length 600 [2021-11-09 10:40:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:32,660 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 1490 transitions. [2021-11-09 10:40:32,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1490 transitions. [2021-11-09 10:40:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2021-11-09 10:40:32,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:32,667 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:32,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:32,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 10:40:32,892 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:32,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1100466928, now seen corresponding path program 1 times [2021-11-09 10:40:32,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:32,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311787808] [2021-11-09 10:40:32,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:32,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:32,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:32,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797165435] [2021-11-09 10:40:32,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:32,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:32,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:32,961 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:32,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-09 10:40:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:35,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 10:40:35,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2537 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:40:37,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:37,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311787808] [2021-11-09 10:40:37,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:37,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797165435] [2021-11-09 10:40:37,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797165435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:37,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:37,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-09 10:40:37,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474214820] [2021-11-09 10:40:37,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 10:40:37,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 10:40:37,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-09 10:40:37,166 INFO L87 Difference]: Start difference. First operand 1220 states and 1490 transitions. Second operand has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:37,434 INFO L93 Difference]: Finished difference Result 1434 states and 1784 transitions. [2021-11-09 10:40:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 10:40:37,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 608 [2021-11-09 10:40:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:37,443 INFO L225 Difference]: With dead ends: 1434 [2021-11-09 10:40:37,443 INFO L226 Difference]: Without dead ends: 1433 [2021-11-09 10:40:37,443 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2021-11-09 10:40:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2021-11-09 10:40:37,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1315. [2021-11-09 10:40:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.2366818873668188) internal successors, (1625), 1314 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:37,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1625 transitions. [2021-11-09 10:40:37,546 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1625 transitions. Word has length 608 [2021-11-09 10:40:37,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:37,547 INFO L470 AbstractCegarLoop]: Abstraction has 1315 states and 1625 transitions. [2021-11-09 10:40:37,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1625 transitions. [2021-11-09 10:40:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2021-11-09 10:40:37,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:37,557 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:37,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:37,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:37,778 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:37,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:37,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1019996863, now seen corresponding path program 2 times [2021-11-09 10:40:37,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:37,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644249112] [2021-11-09 10:40:37,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:37,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:37,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:37,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433932983] [2021-11-09 10:40:37,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:40:37,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:37,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:37,839 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:37,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-09 10:40:40,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:40:40,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:40,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1722 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 10:40:40,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:40:42,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:42,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644249112] [2021-11-09 10:40:42,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:42,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433932983] [2021-11-09 10:40:42,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433932983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:42,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:42,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-11-09 10:40:42,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289862165] [2021-11-09 10:40:42,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 10:40:42,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:42,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 10:40:42,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-09 10:40:42,388 INFO L87 Difference]: Start difference. First operand 1315 states and 1625 transitions. Second operand has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:42,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:42,689 INFO L93 Difference]: Finished difference Result 1529 states and 1919 transitions. [2021-11-09 10:40:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 10:40:42,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 616 [2021-11-09 10:40:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:42,696 INFO L225 Difference]: With dead ends: 1529 [2021-11-09 10:40:42,696 INFO L226 Difference]: Without dead ends: 1528 [2021-11-09 10:40:42,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=209, Invalid=391, Unknown=0, NotChecked=0, Total=600 [2021-11-09 10:40:42,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-09 10:40:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1410. [2021-11-09 10:40:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.2491128459900638) internal successors, (1760), 1409 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1760 transitions. [2021-11-09 10:40:42,783 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1760 transitions. Word has length 616 [2021-11-09 10:40:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:42,784 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 1760 transitions. [2021-11-09 10:40:42,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.153846153846153) internal successors, (119), 13 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:42,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1760 transitions. [2021-11-09 10:40:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2021-11-09 10:40:42,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:42,792 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:42,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:43,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:43,020 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1702003054, now seen corresponding path program 3 times [2021-11-09 10:40:43,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:43,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380048229] [2021-11-09 10:40:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:43,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:43,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:43,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071587531] [2021-11-09 10:40:43,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:40:43,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:43,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:43,059 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:43,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-09 10:40:45,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 10:40:45,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:45,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 10:40:45,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2572 trivial. 0 not checked. [2021-11-09 10:40:47,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:47,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380048229] [2021-11-09 10:40:47,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:47,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071587531] [2021-11-09 10:40:47,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071587531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:40:47,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:40:47,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:40:47,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772284733] [2021-11-09 10:40:47,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:40:47,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:40:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:40:47,021 INFO L87 Difference]: Start difference. First operand 1410 states and 1760 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:47,220 INFO L93 Difference]: Finished difference Result 1816 states and 2326 transitions. [2021-11-09 10:40:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:40:47,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 624 [2021-11-09 10:40:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:47,227 INFO L225 Difference]: With dead ends: 1816 [2021-11-09 10:40:47,228 INFO L226 Difference]: Without dead ends: 1815 [2021-11-09 10:40:47,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:40:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2021-11-09 10:40:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1488. [2021-11-09 10:40:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.2629455279085406) internal successors, (1878), 1487 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 1878 transitions. [2021-11-09 10:40:47,336 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 1878 transitions. Word has length 624 [2021-11-09 10:40:47,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:47,337 INFO L470 AbstractCegarLoop]: Abstraction has 1488 states and 1878 transitions. [2021-11-09 10:40:47,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:47,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 1878 transitions. [2021-11-09 10:40:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2021-11-09 10:40:47,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:47,347 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 6, 6, 6, 6, 6, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:47,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:47,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-09 10:40:47,560 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:47,561 INFO L85 PathProgramCache]: Analyzing trace with hash 429783864, now seen corresponding path program 1 times [2021-11-09 10:40:47,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:47,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654304547] [2021-11-09 10:40:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:47,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:47,619 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:47,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136495793] [2021-11-09 10:40:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:47,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:47,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:47,621 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:47,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-09 10:40:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:40:50,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 10:40:50,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:40:52,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:52,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654304547] [2021-11-09 10:40:52,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:52,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136495793] [2021-11-09 10:40:52,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136495793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:52,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:52,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-09 10:40:52,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115213607] [2021-11-09 10:40:52,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 10:40:52,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:52,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 10:40:52,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-09 10:40:52,475 INFO L87 Difference]: Start difference. First operand 1488 states and 1878 transitions. Second operand has 16 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:52,753 INFO L93 Difference]: Finished difference Result 1751 states and 2241 transitions. [2021-11-09 10:40:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-09 10:40:52,754 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 626 [2021-11-09 10:40:52,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:52,761 INFO L225 Difference]: With dead ends: 1751 [2021-11-09 10:40:52,761 INFO L226 Difference]: Without dead ends: 1750 [2021-11-09 10:40:52,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2021-11-09 10:40:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-11-09 10:40:52,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1604. [2021-11-09 10:40:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 1.275109170305677) internal successors, (2044), 1603 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:52,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2044 transitions. [2021-11-09 10:40:52,887 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2044 transitions. Word has length 626 [2021-11-09 10:40:52,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:52,888 INFO L470 AbstractCegarLoop]: Abstraction has 1604 states and 2044 transitions. [2021-11-09 10:40:52,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.6) internal successors, (129), 15 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2044 transitions. [2021-11-09 10:40:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2021-11-09 10:40:52,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:52,896 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:52,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:53,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-09 10:40:53,112 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:53,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash -203996377, now seen corresponding path program 2 times [2021-11-09 10:40:53,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:53,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269897020] [2021-11-09 10:40:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:53,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:53,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:53,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900713492] [2021-11-09 10:40:53,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 10:40:53,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:53,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:53,158 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:53,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-09 10:40:56,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 10:40:56,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 10:40:56,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1787 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 10:40:56,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:40:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2659 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 2483 trivial. 0 not checked. [2021-11-09 10:40:58,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:40:58,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269897020] [2021-11-09 10:40:58,159 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 10:40:58,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900713492] [2021-11-09 10:40:58,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900713492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:40:58,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:40:58,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-09 10:40:58,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505258321] [2021-11-09 10:40:58,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 10:40:58,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:40:58,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 10:40:58,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-09 10:40:58,161 INFO L87 Difference]: Start difference. First operand 1604 states and 2044 transitions. Second operand has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:40:58,554 INFO L93 Difference]: Finished difference Result 1867 states and 2407 transitions. [2021-11-09 10:40:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 10:40:58,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 634 [2021-11-09 10:40:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:40:58,562 INFO L225 Difference]: With dead ends: 1867 [2021-11-09 10:40:58,563 INFO L226 Difference]: Without dead ends: 1866 [2021-11-09 10:40:58,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=359, Invalid=697, Unknown=0, NotChecked=0, Total=1056 [2021-11-09 10:40:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2021-11-09 10:40:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1720. [2021-11-09 10:40:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 1.285631180919139) internal successors, (2210), 1719 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:58,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2210 transitions. [2021-11-09 10:40:58,678 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2210 transitions. Word has length 634 [2021-11-09 10:40:58,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:40:58,679 INFO L470 AbstractCegarLoop]: Abstraction has 1720 states and 2210 transitions. [2021-11-09 10:40:58,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.058823529411764) internal successors, (137), 17 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:40:58,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2210 transitions. [2021-11-09 10:40:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2021-11-09 10:40:58,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:40:58,689 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:40:58,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-09 10:40:58,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:58,900 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-09 10:40:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:40:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash -339923946, now seen corresponding path program 3 times [2021-11-09 10:40:58,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:40:58,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565949281] [2021-11-09 10:40:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:40:58,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:40:58,963 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 10:40:58,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43192506] [2021-11-09 10:40:58,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 10:40:58,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:40:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:40:58,965 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:40:58,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e93895d7-45b0-4fb7-9a3b-d225d10b1a27/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process