./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:17:24,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:17:24,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:17:24,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:17:24,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:17:24,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:17:24,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:17:24,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:17:24,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:17:24,769 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:17:24,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:17:24,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:17:24,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:17:24,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:17:24,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:17:24,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:17:24,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:17:24,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:17:24,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:17:24,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:17:24,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:17:24,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:17:24,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:17:24,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:17:24,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:17:24,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:17:24,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:17:24,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:17:24,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:17:24,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:17:24,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:17:24,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:17:24,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:17:24,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:17:24,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:17:24,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:17:24,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:17:24,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:17:24,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:17:24,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:17:24,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:17:24,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:17:24,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:17:24,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:17:24,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:17:24,859 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:17:24,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:17:24,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:17:24,862 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:17:24,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:17:24,863 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:17:24,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:17:24,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:17:24,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:17:24,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:17:24,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:17:24,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:17:24,866 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:17:24,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:17:24,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:17:24,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:17:24,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:17:24,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:17:24,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:17:24,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:17:24,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:17:24,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:17:24,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:17:24,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:17:24,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:17:24,870 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:17:24,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:17:24,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:17:24,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:17:24,872 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_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 [2021-11-22 15:17:25,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:17:25,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:17:25,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:17:25,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:17:25,230 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:17:25,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2021-11-22 15:17:25,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/data/e85cb4e68/1116e7a79d694154b85e1598cbd38501/FLAG260bb2133 [2021-11-22 15:17:25,889 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:17:25,889 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2021-11-22 15:17:25,897 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/data/e85cb4e68/1116e7a79d694154b85e1598cbd38501/FLAG260bb2133 [2021-11-22 15:17:26,241 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/data/e85cb4e68/1116e7a79d694154b85e1598cbd38501 [2021-11-22 15:17:26,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:17:26,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:17:26,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:17:26,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:17:26,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:17:26,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f53fc31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26, skipping insertion in model container [2021-11-22 15:17:26,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:17:26,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:17:26,517 WARN L230 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_f435852a-6ebb-488b-af58-fccbcbd875bf/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2021-11-22 15:17:26,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:17:26,563 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:17:26,578 WARN L230 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_f435852a-6ebb-488b-af58-fccbcbd875bf/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2021-11-22 15:17:26,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:17:26,613 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:17:26,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26 WrapperNode [2021-11-22 15:17:26,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:17:26,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:17:26,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:17:26,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:17:26,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,658 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 104 [2021-11-22 15:17:26,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:17:26,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:17:26,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:17:26,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:17:26,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:17:26,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:17:26,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:17:26,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:17:26,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (1/1) ... [2021-11-22 15:17:26,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:17:26,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:17:26,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:17:26,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:17:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:17:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:17:26,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:17:26,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:17:26,853 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:17:26,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:17:27,134 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:17:27,145 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:17:27,146 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:17:27,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:17:27 BoogieIcfgContainer [2021-11-22 15:17:27,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:17:27,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:17:27,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:17:27,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:17:27,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:17:26" (1/3) ... [2021-11-22 15:17:27,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dde7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:17:27, skipping insertion in model container [2021-11-22 15:17:27,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:17:26" (2/3) ... [2021-11-22 15:17:27,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47dde7f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:17:27, skipping insertion in model container [2021-11-22 15:17:27,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:17:27" (3/3) ... [2021-11-22 15:17:27,160 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2021-11-22 15:17:27,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:17:27,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-22 15:17:27,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:17:27,241 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=PETRI_NET, 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 [2021-11-22 15:17:27,241 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-22 15:17:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 50 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) [2021-11-22 15:17:27,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 15:17:27,272 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:27,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:27,274 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:17:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2021-11-22 15:17:27,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:17:27,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106734085] [2021-11-22 15:17:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:27,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:17:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:27,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:17:27,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106734085] [2021-11-22 15:17:27,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106734085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:17:27,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:17:27,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:17:27,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891967164] [2021-11-22 15:17:27,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:17:27,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:17:27,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:17:27,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:17:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:17:27,560 INFO L87 Difference]: Start difference. First operand has 51 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 50 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:17:27,586 INFO L93 Difference]: Finished difference Result 99 states and 132 transitions. [2021-11-22 15:17:27,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:17:27,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 15:17:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:17:27,618 INFO L225 Difference]: With dead ends: 99 [2021-11-22 15:17:27,618 INFO L226 Difference]: Without dead ends: 47 [2021-11-22 15:17:27,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:17:27,629 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:17:27,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:17:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-22 15:17:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-22 15:17:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-11-22 15:17:27,673 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 10 [2021-11-22 15:17:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:17:27,674 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-11-22 15:17:27,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-11-22 15:17:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:17:27,676 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:27,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:27,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:17:27,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:17:27,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2021-11-22 15:17:27,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:17:27,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959988295] [2021-11-22 15:17:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:27,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:17:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:28,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:17:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959988295] [2021-11-22 15:17:28,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959988295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:17:28,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:17:28,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:17:28,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728172252] [2021-11-22 15:17:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:17:28,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:17:28,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:17:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:17:28,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:17:28,100 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:30,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:32,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:34,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 15:17:35,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:17:35,244 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2021-11-22 15:17:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:17:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:17:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:17:35,247 INFO L225 Difference]: With dead ends: 87 [2021-11-22 15:17:35,247 INFO L226 Difference]: Without dead ends: 85 [2021-11-22 15:17:35,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:17:35,250 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 60 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 31 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:17:35,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 116 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 63 Invalid, 3 Unknown, 0 Unchecked, 7.0s Time] [2021-11-22 15:17:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-22 15:17:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2021-11-22 15:17:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2021-11-22 15:17:35,274 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 11 [2021-11-22 15:17:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:17:35,276 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2021-11-22 15:17:35,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:35,276 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2021-11-22 15:17:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:17:35,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:35,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:35,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:17:35,279 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:17:35,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:35,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1870389148, now seen corresponding path program 1 times [2021-11-22 15:17:35,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:17:35,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664408600] [2021-11-22 15:17:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:35,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:17:35,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:17:35,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788437248] [2021-11-22 15:17:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:35,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:17:35,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:17:35,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:17:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:35,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:17:35,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:17:35,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:35,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:17:35,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:17:35,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664408600] [2021-11-22 15:17:35,612 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:17:35,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788437248] [2021-11-22 15:17:35,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788437248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:17:35,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:17:35,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:17:35,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345182421] [2021-11-22 15:17:35,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:17:35,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:17:35,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:17:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:17:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:17:35,616 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:38,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:17:39,232 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2021-11-22 15:17:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:17:39,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:17:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:17:39,234 INFO L225 Difference]: With dead ends: 92 [2021-11-22 15:17:39,234 INFO L226 Difference]: Without dead ends: 76 [2021-11-22 15:17:39,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:17:39,236 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 28 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:17:39,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 83 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 63 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-22 15:17:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-22 15:17:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2021-11-22 15:17:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.271186440677966) internal successors, (75), 67 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:39,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2021-11-22 15:17:39,253 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 13 [2021-11-22 15:17:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:17:39,254 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2021-11-22 15:17:39,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:39,254 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2021-11-22 15:17:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:17:39,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:39,255 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:39,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:17:39,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:39,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:17:39,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2021-11-22 15:17:39,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:17:39,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673449352] [2021-11-22 15:17:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:39,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:17:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:39,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:17:39,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673449352] [2021-11-22 15:17:39,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673449352] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:17:39,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036563085] [2021-11-22 15:17:39,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:39,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:39,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:17:39,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:17:39,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:17:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:39,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 15:17:39,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:17:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:40,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:17:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:40,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036563085] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:17:40,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:17:40,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2021-11-22 15:17:40,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311127686] [2021-11-22 15:17:40,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:17:40,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:17:40,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:17:40,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:17:40,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:17:40,684 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:44,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:46,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:49,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:52,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:17:53,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:17:53,907 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2021-11-22 15:17:53,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:17:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:17:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:17:53,909 INFO L225 Difference]: With dead ends: 147 [2021-11-22 15:17:53,909 INFO L226 Difference]: Without dead ends: 89 [2021-11-22 15:17:53,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:17:53,911 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 160 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 73 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:17:53,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 237 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 155 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2021-11-22 15:17:53,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-22 15:17:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2021-11-22 15:17:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 81 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) [2021-11-22 15:17:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-11-22 15:17:53,939 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 13 [2021-11-22 15:17:53,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:17:53,939 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-11-22 15:17:53,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:53,940 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-11-22 15:17:53,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:17:53,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:53,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:53,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:17:54,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:54,160 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:17:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2021-11-22 15:17:54,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:17:54,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465093807] [2021-11-22 15:17:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:54,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:17:54,177 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:17:54,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522202122] [2021-11-22 15:17:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:54,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:54,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:17:54,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:17:54,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:17:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:54,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:17:54,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:17:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:17:54,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:17:54,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:17:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465093807] [2021-11-22 15:17:54,382 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:17:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522202122] [2021-11-22 15:17:54,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522202122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:17:54,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:17:54,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:17:54,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474595042] [2021-11-22 15:17:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:17:54,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:17:54,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:17:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:17:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:17:54,385 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:17:57,403 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2021-11-22 15:17:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:17:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:17:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:17:57,405 INFO L225 Difference]: With dead ends: 88 [2021-11-22 15:17:57,405 INFO L226 Difference]: Without dead ends: 68 [2021-11-22 15:17:57,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:17:57,407 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 11 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:17:57,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 89 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-22 15:17:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-22 15:17:57,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-22 15:17:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 67 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) [2021-11-22 15:17:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-11-22 15:17:57,422 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 15 [2021-11-22 15:17:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:17:57,422 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-11-22 15:17:57,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:17:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-11-22 15:17:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-22 15:17:57,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:17:57,424 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:17:57,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:17:57,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:57,636 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:17:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:17:57,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2021-11-22 15:17:57,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:17:57,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401847174] [2021-11-22 15:17:57,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:57,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:17:57,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:17:57,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970078544] [2021-11-22 15:17:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:17:57,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:17:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:17:57,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:17:57,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:17:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:17:57,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:17:57,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:17:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:17:57,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:17:57,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:17:57,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401847174] [2021-11-22 15:17:57,889 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:17:57,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970078544] [2021-11-22 15:17:57,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970078544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:17:57,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:17:57,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:17:57,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975878694] [2021-11-22 15:17:57,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:17:57,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:17:57,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:17:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:17:57,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:17:57,895 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:18:00,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:18:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:18:01,100 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2021-11-22 15:18:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:18:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-22 15:18:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:18:01,101 INFO L225 Difference]: With dead ends: 86 [2021-11-22 15:18:01,101 INFO L226 Difference]: Without dead ends: 80 [2021-11-22 15:18:01,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:18:01,103 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:18:01,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 93 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-22 15:18:01,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-22 15:18:01,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-22 15:18:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 79 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:18:01,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2021-11-22 15:18:01,115 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 17 [2021-11-22 15:18:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:18:01,115 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2021-11-22 15:18:01,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:18:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2021-11-22 15:18:01,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:18:01,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:18:01,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:18:01,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-22 15:18:01,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 15:18:01,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-22 15:18:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:18:01,321 INFO L85 PathProgramCache]: Analyzing trace with hash 265596604, now seen corresponding path program 1 times [2021-11-22 15:18:01,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:18:01,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505393014] [2021-11-22 15:18:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:18:01,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:18:01,330 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:18:01,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368797394] [2021-11-22 15:18:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:18:01,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:18:01,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:18:01,334 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:18:01,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f435852a-6ebb-488b-af58-fccbcbd875bf/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process