./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD --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 b0dc7e6cdf006545b97e616af165994b39a2e54c024b52d6607380c5e84ee914 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:49:53,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:49:53,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:49:53,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:49:53,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:49:53,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:49:53,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:49:53,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:49:53,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:49:53,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:49:53,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:49:53,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:49:53,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:49:53,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:49:53,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:49:53,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:49:53,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:49:53,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:49:53,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:49:53,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:49:53,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:49:53,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:49:53,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:49:53,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:49:53,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:49:53,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:49:53,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:49:53,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:49:53,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:49:53,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:49:53,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:49:53,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:49:53,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:49:53,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:49:53,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:49:53,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:49:53,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:49:53,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:49:53,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:49:53,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:49:53,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:49:53,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:49:53,851 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:49:53,851 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:49:53,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:49:53,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:49:53,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:49:53,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:49:53,853 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:49:53,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:49:53,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:49:53,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:49:53,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:49:53,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:49:53,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:49:53,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:49:53,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:49:53,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:49:53,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:49:53,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:49:53,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:49:53,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:49:53,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:49:53,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:49:53,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:49:53,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:49:53,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:49:53,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:49:53,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:49:53,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:49:53,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:49:53,867 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:49:53,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:49:53,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:49:53,868 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_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0dc7e6cdf006545b97e616af165994b39a2e54c024b52d6607380c5e84ee914 [2021-10-28 22:49:54,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:49:54,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:49:54,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:49:54,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:49:54,184 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:49:54,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2021-10-28 22:49:54,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/data/0f7ece8cf/a3a927dadbd14e339091c9b709e4d344/FLAG91c8bbbb3 [2021-10-28 22:49:54,735 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:49:54,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c [2021-10-28 22:49:54,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/data/0f7ece8cf/a3a927dadbd14e339091c9b709e4d344/FLAG91c8bbbb3 [2021-10-28 22:49:55,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/data/0f7ece8cf/a3a927dadbd14e339091c9b709e4d344 [2021-10-28 22:49:55,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:49:55,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:49:55,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:49:55,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:49:55,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:49:55,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@652c31c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55, skipping insertion in model container [2021-10-28 22:49:55,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:49:55,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:49:55,313 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_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c[526,539] [2021-10-28 22:49:55,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:49:55,351 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:49:55,368 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_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound20.c[526,539] [2021-10-28 22:49:55,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:49:55,402 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:49:55,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55 WrapperNode [2021-10-28 22:49:55,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:49:55,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:49:55,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:49:55,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:49:55,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:49:55,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:49:55,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:49:55,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:49:55,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:49:55,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:49:55,503 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:49:55,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:49:55,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (1/1) ... [2021-10-28 22:49:55,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:49:55,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:55,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:49:55,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:49:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:49:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:49:55,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:49:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:49:55,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:49:55,858 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-10-28 22:49:55,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:55 BoogieIcfgContainer [2021-10-28 22:49:55,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:49:55,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:49:55,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:49:55,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:49:55,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:49:55" (1/3) ... [2021-10-28 22:49:55,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3aded5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:49:55, skipping insertion in model container [2021-10-28 22:49:55,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:49:55" (2/3) ... [2021-10-28 22:49:55,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3aded5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:49:55, skipping insertion in model container [2021-10-28 22:49:55,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:55" (3/3) ... [2021-10-28 22:49:55,869 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound20.c [2021-10-28 22:49:55,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:49:55,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 22:49:55,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:49:55,931 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 [2021-10-28 22:49:55,931 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 22:49:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 22:49:55,951 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:55,952 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 22:49:55,953 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 22:49:55,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:55,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68008699] [2021-10-28 22:49:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:55,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:56,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:56,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68008699] [2021-10-28 22:49:56,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68008699] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:56,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:56,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:49:56,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296035036] [2021-10-28 22:49:56,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:49:56,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:49:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:49:56,291 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.6774193548387097) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-28 22:49:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:56,460 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2021-10-28 22:49:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:49:56,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-10-28 22:49:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:56,488 INFO L225 Difference]: With dead ends: 102 [2021-10-28 22:49:56,488 INFO L226 Difference]: Without dead ends: 57 [2021-10-28 22:49:56,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-28 22:49:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2021-10-28 22:49:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 22:49:56,535 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2021-10-28 22:49:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:56,536 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 22:49:56,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-10-28 22:49:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 22:49:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 22:49:56,538 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:56,538 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:56,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:49:56,540 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2021-10-28 22:49:56,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:56,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580947600] [2021-10-28 22:49:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:56,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:56,585 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:49:56,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1433691199] [2021-10-28 22:49:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:56,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:56,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:56,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:49:56,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:49:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:56,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 22:49:56,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:56,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:56,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580947600] [2021-10-28 22:49:56,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:49:56,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433691199] [2021-10-28 22:49:56,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433691199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:56,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:56,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 22:49:56,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183118973] [2021-10-28 22:49:56,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:49:56,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:49:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:49:56,775 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:56,802 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2021-10-28 22:49:56,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:49:56,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 22:49:56,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:56,805 INFO L225 Difference]: With dead ends: 54 [2021-10-28 22:49:56,806 INFO L226 Difference]: Without dead ends: 35 [2021-10-28 22:49:56,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:49:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-28 22:49:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-10-28 22:49:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-28 22:49:56,819 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2021-10-28 22:49:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:56,820 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-28 22:49:56,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-28 22:49:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 22:49:56,821 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:56,821 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:56,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:49:57,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:57,050 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:57,051 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 22:49:57,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:57,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202230954] [2021-10-28 22:49:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:57,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:57,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:57,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202230954] [2021-10-28 22:49:57,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202230954] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:57,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:57,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:49:57,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283217192] [2021-10-28 22:49:57,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:49:57,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:57,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:49:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:49:57,104 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:57,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:57,159 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2021-10-28 22:49:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:49:57,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 22:49:57,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:57,161 INFO L225 Difference]: With dead ends: 54 [2021-10-28 22:49:57,161 INFO L226 Difference]: Without dead ends: 52 [2021-10-28 22:49:57,162 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:57,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-28 22:49:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-10-28 22:49:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 22:49:57,169 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2021-10-28 22:49:57,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:57,169 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 22:49:57,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:57,170 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 22:49:57,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 22:49:57,170 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:57,171 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:57,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 22:49:57,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 22:49:57,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:57,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5239390] [2021-10-28 22:49:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:57,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:57,186 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:49:57,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1771040819] [2021-10-28 22:49:57,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:57,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:57,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:57,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:49:57,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:49:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:57,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:49:57,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:57,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:57,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5239390] [2021-10-28 22:49:57,446 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:49:57,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771040819] [2021-10-28 22:49:57,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771040819] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:57,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:57,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:49:57,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169996688] [2021-10-28 22:49:57,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:49:57,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:57,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:49:57,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:49:57,450 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-28 22:49:57,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:57,535 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-10-28 22:49:57,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:49:57,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2021-10-28 22:49:57,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:57,536 INFO L225 Difference]: With dead ends: 79 [2021-10-28 22:49:57,536 INFO L226 Difference]: Without dead ends: 56 [2021-10-28 22:49:57,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-28 22:49:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2021-10-28 22:49:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 46 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) [2021-10-28 22:49:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-10-28 22:49:57,551 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2021-10-28 22:49:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:57,552 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-10-28 22:49:57,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-10-28 22:49:57,552 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-10-28 22:49:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-28 22:49:57,553 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:57,554 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:57,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:49:57,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:57,769 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2021-10-28 22:49:57,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:57,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560857302] [2021-10-28 22:49:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:57,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:57,806 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:49:57,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278782472] [2021-10-28 22:49:57,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:57,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:57,833 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:49:57,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 22:49:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:57,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:49:57,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:58,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560857302] [2021-10-28 22:49:58,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:49:58,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278782472] [2021-10-28 22:49:58,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278782472] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:49:58,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:49:58,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 22:49:58,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486572598] [2021-10-28 22:49:58,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 22:49:58,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:58,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 22:49:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 22:49:58,043 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:58,099 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-10-28 22:49:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:49:58,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-28 22:49:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:58,100 INFO L225 Difference]: With dead ends: 66 [2021-10-28 22:49:58,101 INFO L226 Difference]: Without dead ends: 54 [2021-10-28 22:49:58,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-28 22:49:58,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2021-10-28 22:49:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.302325581395349) internal successors, (56), 47 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) [2021-10-28 22:49:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2021-10-28 22:49:58,108 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2021-10-28 22:49:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:58,108 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2021-10-28 22:49:58,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2021-10-28 22:49:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:49:58,110 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:58,110 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:58,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 22:49:58,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:58,335 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:58,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:58,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2021-10-28 22:49:58,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:58,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165713582] [2021-10-28 22:49:58,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:58,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:58,348 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:49:58,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835934185] [2021-10-28 22:49:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:58,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:58,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:58,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:49:58,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 22:49:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:58,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 22:49:58,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:58,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:58,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165713582] [2021-10-28 22:49:58,543 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:49:58,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835934185] [2021-10-28 22:49:58,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835934185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:49:58,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:49:58,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 22:49:58,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540182515] [2021-10-28 22:49:58,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:49:58,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:58,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:49:58,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:58,546 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:58,582 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2021-10-28 22:49:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:49:58,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:49:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:58,583 INFO L225 Difference]: With dead ends: 78 [2021-10-28 22:49:58,584 INFO L226 Difference]: Without dead ends: 50 [2021-10-28 22:49:58,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:49:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-28 22:49:58,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-28 22:49:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.288888888888889) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-28 22:49:58,590 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2021-10-28 22:49:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:58,591 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-28 22:49:58,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:58,591 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-10-28 22:49:58,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-28 22:49:58,592 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:58,592 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:58,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 22:49:58,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 22:49:58,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:58,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2021-10-28 22:49:58,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:58,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300735384] [2021-10-28 22:49:58,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:58,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:58,840 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:49:58,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925229525] [2021-10-28 22:49:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:58,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:58,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:58,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:49:58,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 22:49:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:58,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:49:58,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:59,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:59,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300735384] [2021-10-28 22:49:59,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:49:59,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925229525] [2021-10-28 22:49:59,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925229525] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:49:59,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:49:59,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:49:59,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475131355] [2021-10-28 22:49:59,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:49:59,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:49:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:49:59,182 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:59,344 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2021-10-28 22:49:59,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 22:49:59,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-28 22:49:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:59,345 INFO L225 Difference]: With dead ends: 126 [2021-10-28 22:49:59,346 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 22:49:59,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:49:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 22:49:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2021-10-28 22:49:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 70 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:59,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2021-10-28 22:49:59,357 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2021-10-28 22:49:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2021-10-28 22:49:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2021-10-28 22:49:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 22:49:59,359 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:59,359 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:59,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 22:49:59,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:59,585 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:49:59,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:49:59,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2021-10-28 22:49:59,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:49:59,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88803895] [2021-10-28 22:49:59,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:59,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:49:59,597 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:49:59,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144706498] [2021-10-28 22:49:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:49:59,598 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:49:59,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:49:59,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:49:59,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 22:49:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:49:59,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:49:59,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:49:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:49:59,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:49:59,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88803895] [2021-10-28 22:49:59,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:49:59,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144706498] [2021-10-28 22:49:59,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144706498] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:49:59,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:49:59,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:49:59,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139005022] [2021-10-28 22:49:59,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:49:59,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:49:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:49:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:49:59,805 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:59,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:49:59,827 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2021-10-28 22:49:59,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:49:59,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 22:49:59,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:49:59,832 INFO L225 Difference]: With dead ends: 78 [2021-10-28 22:49:59,832 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 22:49:59,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:49:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 22:49:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-10-28 22:49:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 70 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:59,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2021-10-28 22:49:59,852 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 25 [2021-10-28 22:49:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:49:59,853 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2021-10-28 22:49:59,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:49:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2021-10-28 22:49:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 22:49:59,854 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:49:59,855 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:49:59,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-28 22:50:00,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:00,081 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:00,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:00,082 INFO L85 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2021-10-28 22:50:00,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:00,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026223186] [2021-10-28 22:50:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:00,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:00,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:00,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205779238] [2021-10-28 22:50:00,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:00,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:00,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:00,095 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:00,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 22:50:00,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 22:50:00,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:00,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 22:50:00,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 22:50:00,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:00,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026223186] [2021-10-28 22:50:00,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:00,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205779238] [2021-10-28 22:50:00,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205779238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:50:00,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:50:00,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:50:00,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417195993] [2021-10-28 22:50:00,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:50:00,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:50:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:50:00,272 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:00,298 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-10-28 22:50:00,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:50:00,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 22:50:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:00,300 INFO L225 Difference]: With dead ends: 107 [2021-10-28 22:50:00,300 INFO L226 Difference]: Without dead ends: 79 [2021-10-28 22:50:00,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:50:00,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-28 22:50:00,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2021-10-28 22:50:00,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 72 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:00,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2021-10-28 22:50:00,310 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 26 [2021-10-28 22:50:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:00,311 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2021-10-28 22:50:00,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:00,311 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2021-10-28 22:50:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 22:50:00,312 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:00,312 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-28 22:50:00,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:00,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 22:50:00,529 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2021-10-28 22:50:00,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:00,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199806193] [2021-10-28 22:50:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:00,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:00,540 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:00,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [624832267] [2021-10-28 22:50:00,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:00,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:00,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:00,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:00,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 22:50:00,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:50:00,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:00,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 22:50:00,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:01,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:01,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199806193] [2021-10-28 22:50:01,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:01,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624832267] [2021-10-28 22:50:01,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624832267] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:01,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:01,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:50:01,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198791269] [2021-10-28 22:50:01,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:50:01,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:01,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:50:01,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:50:01,100 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:01,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:01,327 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2021-10-28 22:50:01,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:50:01,328 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 22:50:01,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:01,331 INFO L225 Difference]: With dead ends: 182 [2021-10-28 22:50:01,331 INFO L226 Difference]: Without dead ends: 141 [2021-10-28 22:50:01,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:50:01,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-28 22:50:01,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 97. [2021-10-28 22:50:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 96 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2021-10-28 22:50:01,363 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 26 [2021-10-28 22:50:01,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:01,364 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2021-10-28 22:50:01,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2021-10-28 22:50:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-28 22:50:01,365 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:01,366 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:01,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:01,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:01,591 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:01,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:01,592 INFO L85 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2021-10-28 22:50:01,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:01,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154399150] [2021-10-28 22:50:01,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:01,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:01,603 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:01,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518214944] [2021-10-28 22:50:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:01,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:01,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:01,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 22:50:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:01,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 22:50:01,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:01,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:01,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154399150] [2021-10-28 22:50:01,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:01,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518214944] [2021-10-28 22:50:01,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518214944] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:01,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:01,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 22:50:01,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728446766] [2021-10-28 22:50:01,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:50:01,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:01,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:50:01,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:50:01,853 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:01,884 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2021-10-28 22:50:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:50:01,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-28 22:50:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:01,886 INFO L225 Difference]: With dead ends: 105 [2021-10-28 22:50:01,886 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 22:50:01,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:50:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 22:50:01,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-28 22:50:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.25) internal successors, (115), 96 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2021-10-28 22:50:01,895 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 27 [2021-10-28 22:50:01,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:01,895 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2021-10-28 22:50:01,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2021-10-28 22:50:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-28 22:50:01,897 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:01,897 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:01,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:02,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:02,101 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:02,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2021-10-28 22:50:02,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:02,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299471113] [2021-10-28 22:50:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:02,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:02,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:02,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158534610] [2021-10-28 22:50:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:02,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:02,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:02,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 22:50:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:02,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 22:50:02,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:02,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:02,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299471113] [2021-10-28 22:50:02,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:02,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158534610] [2021-10-28 22:50:02,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158534610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:02,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:02,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 22:50:02,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529826023] [2021-10-28 22:50:02,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 22:50:02,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:02,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 22:50:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:50:02,763 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:02,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:02,905 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2021-10-28 22:50:02,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:50:02,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-28 22:50:02,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:02,907 INFO L225 Difference]: With dead ends: 115 [2021-10-28 22:50:02,907 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 22:50:02,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 22:50:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2021-10-28 22:50:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.24) internal successors, (124), 104 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2021-10-28 22:50:02,917 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 29 [2021-10-28 22:50:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:02,919 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2021-10-28 22:50:02,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2021-10-28 22:50:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 22:50:02,924 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:02,924 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:02,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:03,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:03,145 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:03,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:03,145 INFO L85 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2021-10-28 22:50:03,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:03,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229658606] [2021-10-28 22:50:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:03,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:03,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:03,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597593465] [2021-10-28 22:50:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:03,156 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:03,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:03,157 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:03,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 22:50:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:03,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:50:03,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:03,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:03,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229658606] [2021-10-28 22:50:03,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:03,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597593465] [2021-10-28 22:50:03,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597593465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:03,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:03,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 22:50:03,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66176631] [2021-10-28 22:50:03,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:50:03,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:03,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:50:03,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:50:03,491 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:03,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:03,531 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2021-10-28 22:50:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:50:03,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-28 22:50:03,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:03,533 INFO L225 Difference]: With dead ends: 116 [2021-10-28 22:50:03,533 INFO L226 Difference]: Without dead ends: 106 [2021-10-28 22:50:03,535 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:50:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-28 22:50:03,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-10-28 22:50:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.22) internal successors, (122), 104 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) [2021-10-28 22:50:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2021-10-28 22:50:03,544 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 30 [2021-10-28 22:50:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2021-10-28 22:50:03,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2021-10-28 22:50:03,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 22:50:03,549 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:03,549 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-10-28 22:50:03,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:03,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 22:50:03,773 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:03,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:03,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2021-10-28 22:50:03,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:03,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212275892] [2021-10-28 22:50:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:03,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:03,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:03,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349718069] [2021-10-28 22:50:03,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:50:03,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:03,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:03,789 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:03,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 22:50:03,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 22:50:03,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:03,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 22:50:03,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:04,264 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-28 22:50:04,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:04,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212275892] [2021-10-28 22:50:04,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:04,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349718069] [2021-10-28 22:50:04,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349718069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:04,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:04,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 22:50:04,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195098920] [2021-10-28 22:50:04,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:50:04,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:50:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:50:04,270 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:04,456 INFO L93 Difference]: Finished difference Result 123 states and 141 transitions. [2021-10-28 22:50:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:50:04,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 22:50:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:04,458 INFO L225 Difference]: With dead ends: 123 [2021-10-28 22:50:04,458 INFO L226 Difference]: Without dead ends: 113 [2021-10-28 22:50:04,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-10-28 22:50:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2021-10-28 22:50:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2021-10-28 22:50:04,479 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 34 [2021-10-28 22:50:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:04,480 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2021-10-28 22:50:04,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2021-10-28 22:50:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 22:50:04,481 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:04,481 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:04,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:04,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 22:50:04,697 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2021-10-28 22:50:04,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:04,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113871624] [2021-10-28 22:50:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:04,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:04,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:04,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1408663576] [2021-10-28 22:50:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:04,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:04,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:04,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:04,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 22:50:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:04,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 22:50:04,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:05,407 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:05,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:05,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113871624] [2021-10-28 22:50:05,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:05,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408663576] [2021-10-28 22:50:05,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408663576] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:05,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:05,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 22:50:05,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491515439] [2021-10-28 22:50:05,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:50:05,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:50:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:50:05,410 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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) [2021-10-28 22:50:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:05,558 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2021-10-28 22:50:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:50:05,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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 34 [2021-10-28 22:50:05,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:05,560 INFO L225 Difference]: With dead ends: 114 [2021-10-28 22:50:05,560 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 22:50:05,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:50:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 22:50:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-10-28 22:50:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.202127659574468) internal successors, (113), 96 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2021-10-28 22:50:05,574 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 34 [2021-10-28 22:50:05,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:05,575 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2021-10-28 22:50:05,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 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) [2021-10-28 22:50:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2021-10-28 22:50:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-28 22:50:05,576 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:05,576 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:05,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:05,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 22:50:05,789 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:05,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2021-10-28 22:50:05,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:05,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715167698] [2021-10-28 22:50:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:05,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:05,799 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:05,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340355876] [2021-10-28 22:50:05,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:05,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:05,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:05,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 22:50:06,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:50:06,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:06,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 22:50:06,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:06,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:06,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715167698] [2021-10-28 22:50:06,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:06,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340355876] [2021-10-28 22:50:06,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340355876] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:06,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:06,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 22:50:06,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977174679] [2021-10-28 22:50:06,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:50:06,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:50:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:50:06,174 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:06,217 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2021-10-28 22:50:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:50:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-28 22:50:06,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:06,220 INFO L225 Difference]: With dead ends: 107 [2021-10-28 22:50:06,220 INFO L226 Difference]: Without dead ends: 99 [2021-10-28 22:50:06,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:50:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-28 22:50:06,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-10-28 22:50:06,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 98 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-10-28 22:50:06,231 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 35 [2021-10-28 22:50:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:06,231 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-10-28 22:50:06,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-10-28 22:50:06,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 22:50:06,232 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:06,233 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:06,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:06,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 22:50:06,453 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:06,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2021-10-28 22:50:06,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:06,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116359561] [2021-10-28 22:50:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:06,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:06,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:06,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726712843] [2021-10-28 22:50:06,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:06,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:06,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:06,465 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:06,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 22:50:06,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:50:06,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:06,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 22:50:06,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:07,340 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:07,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:07,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116359561] [2021-10-28 22:50:07,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:07,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726712843] [2021-10-28 22:50:07,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726712843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:07,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:07,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 22:50:07,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541992936] [2021-10-28 22:50:07,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 22:50:07,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:07,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 22:50:07,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 22:50:07,345 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:07,570 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2021-10-28 22:50:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:50:07,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-28 22:50:07,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:07,572 INFO L225 Difference]: With dead ends: 126 [2021-10-28 22:50:07,572 INFO L226 Difference]: Without dead ends: 124 [2021-10-28 22:50:07,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:50:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-28 22:50:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2021-10-28 22:50:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 101 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2021-10-28 22:50:07,583 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 37 [2021-10-28 22:50:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:07,584 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2021-10-28 22:50:07,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2021-10-28 22:50:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 22:50:07,585 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:07,585 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:07,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:07,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 22:50:07,800 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:07,800 INFO L85 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2021-10-28 22:50:07,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:07,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657109112] [2021-10-28 22:50:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:07,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:07,814 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:07,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780457234] [2021-10-28 22:50:07,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:07,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:07,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:07,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:07,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 22:50:08,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:50:08,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:08,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 22:50:08,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:08,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:08,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657109112] [2021-10-28 22:50:08,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:08,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780457234] [2021-10-28 22:50:08,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780457234] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:08,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:08,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 22:50:08,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892729739] [2021-10-28 22:50:08,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:50:08,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:08,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:50:08,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:50:08,270 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:08,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:08,309 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2021-10-28 22:50:08,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:50:08,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-28 22:50:08,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:08,310 INFO L225 Difference]: With dead ends: 121 [2021-10-28 22:50:08,311 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 22:50:08,311 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 22:50:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-10-28 22:50:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 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) [2021-10-28 22:50:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-10-28 22:50:08,321 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 38 [2021-10-28 22:50:08,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:08,321 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-10-28 22:50:08,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-10-28 22:50:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 22:50:08,322 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:08,323 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:08,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:08,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 22:50:08,529 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:08,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:08,529 INFO L85 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2021-10-28 22:50:08,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:08,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130508506] [2021-10-28 22:50:08,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:08,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:08,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:08,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886889983] [2021-10-28 22:50:08,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:50:08,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:08,548 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:08,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 22:50:08,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 22:50:08,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:08,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 22:50:08,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:09,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:09,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130508506] [2021-10-28 22:50:09,069 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:09,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886889983] [2021-10-28 22:50:09,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886889983] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:09,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:09,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 22:50:09,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771296079] [2021-10-28 22:50:09,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:50:09,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:50:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:50:09,071 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:09,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:09,137 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2021-10-28 22:50:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:50:09,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-28 22:50:09,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:09,139 INFO L225 Difference]: With dead ends: 120 [2021-10-28 22:50:09,139 INFO L226 Difference]: Without dead ends: 112 [2021-10-28 22:50:09,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:50:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-28 22:50:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-10-28 22:50:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 109 states have (on average 1.165137614678899) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-10-28 22:50:09,151 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 43 [2021-10-28 22:50:09,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:09,151 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-10-28 22:50:09,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-10-28 22:50:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-28 22:50:09,152 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:09,152 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 22:50:09,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:09,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:09,353 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:09,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2021-10-28 22:50:09,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:09,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569783710] [2021-10-28 22:50:09,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:09,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:09,367 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:09,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823595145] [2021-10-28 22:50:09,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:50:09,376 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:09,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:09,377 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:09,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 22:50:09,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 22:50:09,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:09,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 22:50:09,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-28 22:50:10,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:10,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569783710] [2021-10-28 22:50:10,390 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:10,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823595145] [2021-10-28 22:50:10,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823595145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:10,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:10,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:50:10,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034031879] [2021-10-28 22:50:10,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:50:10,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:10,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:50:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:50:10,395 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:10,524 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2021-10-28 22:50:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 22:50:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-28 22:50:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:10,525 INFO L225 Difference]: With dead ends: 112 [2021-10-28 22:50:10,525 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 22:50:10,526 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 22:50:10,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2021-10-28 22:50:10,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 106 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) [2021-10-28 22:50:10,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2021-10-28 22:50:10,538 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 44 [2021-10-28 22:50:10,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:10,538 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2021-10-28 22:50:10,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:10,539 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2021-10-28 22:50:10,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 22:50:10,539 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:10,539 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:10,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:10,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:10,765 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2021-10-28 22:50:10,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:10,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912940815] [2021-10-28 22:50:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:10,766 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:10,773 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:10,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216949153] [2021-10-28 22:50:10,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:50:10,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:10,775 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:10,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 22:50:11,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-28 22:50:11,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:11,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:50:11,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:11,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:11,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912940815] [2021-10-28 22:50:11,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:11,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216949153] [2021-10-28 22:50:11,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216949153] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:11,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:11,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:50:11,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44709612] [2021-10-28 22:50:11,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:50:11,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:11,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:50:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:11,308 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:11,371 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2021-10-28 22:50:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:50:11,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 22:50:11,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:11,373 INFO L225 Difference]: With dead ends: 137 [2021-10-28 22:50:11,373 INFO L226 Difference]: Without dead ends: 125 [2021-10-28 22:50:11,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:50:11,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-28 22:50:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-10-28 22:50:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.1311475409836065) internal successors, (138), 123 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 138 transitions. [2021-10-28 22:50:11,389 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 138 transitions. Word has length 45 [2021-10-28 22:50:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:11,390 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 138 transitions. [2021-10-28 22:50:11,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:11,390 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 138 transitions. [2021-10-28 22:50:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 22:50:11,391 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:11,391 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:11,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:11,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 22:50:11,615 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:11,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2021-10-28 22:50:11,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:11,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144904498] [2021-10-28 22:50:11,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:11,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:11,633 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:11,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435341134] [2021-10-28 22:50:11,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:11,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:11,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:11,635 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:11,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 22:50:12,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 22:50:12,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:12,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:50:12,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:12,326 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-28 22:50:12,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:12,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144904498] [2021-10-28 22:50:12,327 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:12,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435341134] [2021-10-28 22:50:12,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435341134] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:12,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:12,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 22:50:12,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357036530] [2021-10-28 22:50:12,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:50:12,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:12,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:50:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:12,328 INFO L87 Difference]: Start difference. First operand 124 states and 138 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:12,516 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-10-28 22:50:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 22:50:12,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-28 22:50:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:12,519 INFO L225 Difference]: With dead ends: 134 [2021-10-28 22:50:12,519 INFO L226 Difference]: Without dead ends: 95 [2021-10-28 22:50:12,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:50:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-28 22:50:12,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2021-10-28 22:50:12,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 86 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-10-28 22:50:12,529 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 49 [2021-10-28 22:50:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:12,529 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-10-28 22:50:12,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-10-28 22:50:12,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 22:50:12,530 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:12,530 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:12,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:12,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 22:50:12,746 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:12,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2021-10-28 22:50:12,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:12,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263345688] [2021-10-28 22:50:12,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:12,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:12,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:12,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363317877] [2021-10-28 22:50:12,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:50:12,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:12,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:12,762 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:12,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 22:50:13,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:50:13,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:13,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 22:50:13,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:13,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:13,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263345688] [2021-10-28 22:50:13,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:13,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363317877] [2021-10-28 22:50:13,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363317877] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:13,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:13,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:50:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423254841] [2021-10-28 22:50:13,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:50:13,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:50:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:50:13,349 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:13,418 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2021-10-28 22:50:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 22:50:13,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 22:50:13,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:13,420 INFO L225 Difference]: With dead ends: 97 [2021-10-28 22:50:13,420 INFO L226 Difference]: Without dead ends: 89 [2021-10-28 22:50:13,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:50:13,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-28 22:50:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-28 22:50:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 88 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:13,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 97 transitions. [2021-10-28 22:50:13,431 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 97 transitions. Word has length 51 [2021-10-28 22:50:13,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:13,431 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 97 transitions. [2021-10-28 22:50:13,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:13,432 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 97 transitions. [2021-10-28 22:50:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 22:50:13,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:13,432 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:13,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:13,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 22:50:13,652 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:13,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1117773943, now seen corresponding path program 4 times [2021-10-28 22:50:13,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:13,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556042196] [2021-10-28 22:50:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:13,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:13,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:13,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930766443] [2021-10-28 22:50:13,662 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:50:13,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:13,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:13,664 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:13,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 22:50:14,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:50:14,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:14,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 22:50:14,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:14,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:14,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556042196] [2021-10-28 22:50:14,285 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:14,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930766443] [2021-10-28 22:50:14,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930766443] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:14,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:14,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 22:50:14,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190495370] [2021-10-28 22:50:14,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:50:14,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:50:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:50:14,288 INFO L87 Difference]: Start difference. First operand 89 states and 97 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:14,347 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-10-28 22:50:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 22:50:14,348 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-28 22:50:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:14,349 INFO L225 Difference]: With dead ends: 120 [2021-10-28 22:50:14,349 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 22:50:14,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:50:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 22:50:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-10-28 22:50:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.1214953271028036) internal successors, (120), 108 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) [2021-10-28 22:50:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2021-10-28 22:50:14,362 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 53 [2021-10-28 22:50:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:14,362 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2021-10-28 22:50:14,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:14,363 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2021-10-28 22:50:14,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 22:50:14,363 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:14,364 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:14,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:14,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-28 22:50:14,577 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2021-10-28 22:50:14,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:14,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339579791] [2021-10-28 22:50:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:14,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:14,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:14,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209182907] [2021-10-28 22:50:14,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:50:14,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:14,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:14,596 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:14,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 22:50:15,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-28 22:50:15,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:15,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 22:50:15,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:15,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:15,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339579791] [2021-10-28 22:50:15,319 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:15,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209182907] [2021-10-28 22:50:15,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209182907] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:15,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:15,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 22:50:15,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611915091] [2021-10-28 22:50:15,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:50:15,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:15,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:50:15,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:50:15,321 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:15,420 INFO L93 Difference]: Finished difference Result 119 states and 130 transitions. [2021-10-28 22:50:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 22:50:15,421 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-28 22:50:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:15,422 INFO L225 Difference]: With dead ends: 119 [2021-10-28 22:50:15,422 INFO L226 Difference]: Without dead ends: 111 [2021-10-28 22:50:15,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-28 22:50:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-10-28 22:50:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-10-28 22:50:15,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.1192660550458715) internal successors, (122), 110 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) [2021-10-28 22:50:15,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2021-10-28 22:50:15,434 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 59 [2021-10-28 22:50:15,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:15,434 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2021-10-28 22:50:15,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2021-10-28 22:50:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 22:50:15,436 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:15,436 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:15,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:15,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:15,655 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:15,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1856062402, now seen corresponding path program 5 times [2021-10-28 22:50:15,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:15,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286932788] [2021-10-28 22:50:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:15,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:15,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:15,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [384820823] [2021-10-28 22:50:15,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:50:15,664 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:15,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:15,665 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 22:50:16,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-28 22:50:16,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:16,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:50:16,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:17,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:17,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286932788] [2021-10-28 22:50:17,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:17,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384820823] [2021-10-28 22:50:17,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384820823] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:17,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:17,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 22:50:17,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391892641] [2021-10-28 22:50:17,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:50:17,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:50:17,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:50:17,138 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:17,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:17,211 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-10-28 22:50:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 22:50:17,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-10-28 22:50:17,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:17,213 INFO L225 Difference]: With dead ends: 142 [2021-10-28 22:50:17,213 INFO L226 Difference]: Without dead ends: 132 [2021-10-28 22:50:17,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:50:17,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-10-28 22:50:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-10-28 22:50:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 1.124031007751938) internal successors, (145), 130 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2021-10-28 22:50:17,227 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 60 [2021-10-28 22:50:17,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:17,228 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2021-10-28 22:50:17,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:17,228 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2021-10-28 22:50:17,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-28 22:50:17,229 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:17,229 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:17,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:17,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-28 22:50:17,437 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1836406497, now seen corresponding path program 6 times [2021-10-28 22:50:17,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:17,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460410920] [2021-10-28 22:50:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:17,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:17,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217596725] [2021-10-28 22:50:17,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:50:17,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:17,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:17,449 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:17,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 22:50:17,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-28 22:50:17,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:17,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 22:50:17,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:18,127 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:18,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:18,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460410920] [2021-10-28 22:50:18,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:18,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217596725] [2021-10-28 22:50:18,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217596725] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:18,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:18,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 22:50:18,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982360977] [2021-10-28 22:50:18,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:50:18,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:50:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:50:18,131 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:18,237 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2021-10-28 22:50:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 22:50:18,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-28 22:50:18,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:18,238 INFO L225 Difference]: With dead ends: 141 [2021-10-28 22:50:18,239 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 22:50:18,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-10-28 22:50:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 22:50:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-10-28 22:50:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 132 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 147 transitions. [2021-10-28 22:50:18,252 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 147 transitions. Word has length 67 [2021-10-28 22:50:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:18,253 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 147 transitions. [2021-10-28 22:50:18,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 147 transitions. [2021-10-28 22:50:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-28 22:50:18,254 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:18,254 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:18,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:18,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 22:50:18,481 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:18,481 INFO L85 PathProgramCache]: Analyzing trace with hash 843932311, now seen corresponding path program 6 times [2021-10-28 22:50:18,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:18,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432609743] [2021-10-28 22:50:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:18,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:18,497 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:18,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531340013] [2021-10-28 22:50:18,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:50:18,498 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:18,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:18,499 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:18,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 22:50:19,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-28 22:50:19,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:19,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 22:50:19,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:19,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:19,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432609743] [2021-10-28 22:50:19,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:19,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531340013] [2021-10-28 22:50:19,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531340013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:19,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:19,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 22:50:19,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227683745] [2021-10-28 22:50:19,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:50:19,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:50:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:50:19,283 INFO L87 Difference]: Start difference. First operand 133 states and 147 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:19,372 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2021-10-28 22:50:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 22:50:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-10-28 22:50:19,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:19,374 INFO L225 Difference]: With dead ends: 164 [2021-10-28 22:50:19,374 INFO L226 Difference]: Without dead ends: 154 [2021-10-28 22:50:19,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2021-10-28 22:50:19,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-28 22:50:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2021-10-28 22:50:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.1258278145695364) internal successors, (170), 152 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 170 transitions. [2021-10-28 22:50:19,389 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 170 transitions. Word has length 67 [2021-10-28 22:50:19,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:19,390 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 170 transitions. [2021-10-28 22:50:19,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 170 transitions. [2021-10-28 22:50:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-10-28 22:50:19,391 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:19,391 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:19,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:19,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 22:50:19,605 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1778423326, now seen corresponding path program 7 times [2021-10-28 22:50:19,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:19,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672236258] [2021-10-28 22:50:19,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:19,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:19,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:19,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915594446] [2021-10-28 22:50:19,625 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 22:50:19,625 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:19,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:19,627 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:19,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 22:50:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:20,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 22:50:20,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:20,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:20,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672236258] [2021-10-28 22:50:20,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:20,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915594446] [2021-10-28 22:50:20,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915594446] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:20,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:20,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 22:50:20,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025176299] [2021-10-28 22:50:20,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 22:50:20,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:20,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 22:50:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 22:50:20,401 INFO L87 Difference]: Start difference. First operand 153 states and 170 transitions. Second operand has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 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) [2021-10-28 22:50:20,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:20,514 INFO L93 Difference]: Finished difference Result 188 states and 210 transitions. [2021-10-28 22:50:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 22:50:20,515 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 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 74 [2021-10-28 22:50:20,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:20,516 INFO L225 Difference]: With dead ends: 188 [2021-10-28 22:50:20,516 INFO L226 Difference]: Without dead ends: 176 [2021-10-28 22:50:20,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2021-10-28 22:50:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-28 22:50:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2021-10-28 22:50:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 173 states have (on average 1.1271676300578035) internal successors, (195), 174 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:20,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2021-10-28 22:50:20,533 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 74 [2021-10-28 22:50:20,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:20,534 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2021-10-28 22:50:20,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 12 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) [2021-10-28 22:50:20,534 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2021-10-28 22:50:20,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 22:50:20,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:20,535 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:20,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:20,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 22:50:20,749 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:20,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1453108407, now seen corresponding path program 8 times [2021-10-28 22:50:20,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:20,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925769308] [2021-10-28 22:50:20,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:20,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:20,759 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:20,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [90819030] [2021-10-28 22:50:20,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:20,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:20,769 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:20,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 22:50:21,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:50:21,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:21,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 22:50:21,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:21,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:21,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925769308] [2021-10-28 22:50:21,711 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:21,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90819030] [2021-10-28 22:50:21,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90819030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:21,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:21,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 22:50:21,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580830485] [2021-10-28 22:50:21,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 22:50:21,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 22:50:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:50:21,713 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 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) [2021-10-28 22:50:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:21,841 INFO L93 Difference]: Finished difference Result 210 states and 235 transitions. [2021-10-28 22:50:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 22:50:21,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 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 81 [2021-10-28 22:50:21,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:21,844 INFO L225 Difference]: With dead ends: 210 [2021-10-28 22:50:21,845 INFO L226 Difference]: Without dead ends: 198 [2021-10-28 22:50:21,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2021-10-28 22:50:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-28 22:50:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-10-28 22:50:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.1282051282051282) internal successors, (220), 196 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 220 transitions. [2021-10-28 22:50:21,866 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 220 transitions. Word has length 81 [2021-10-28 22:50:21,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:21,866 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 220 transitions. [2021-10-28 22:50:21,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 13 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) [2021-10-28 22:50:21,867 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 220 transitions. [2021-10-28 22:50:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-28 22:50:21,868 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:21,868 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:21,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:22,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:22,091 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1309693954, now seen corresponding path program 9 times [2021-10-28 22:50:22,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:22,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858643027] [2021-10-28 22:50:22,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:22,092 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:22,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:22,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1538720846] [2021-10-28 22:50:22,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:50:22,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:22,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:22,103 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:22,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 22:50:22,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-28 22:50:22,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:22,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 22:50:22,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:23,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:23,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858643027] [2021-10-28 22:50:23,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:23,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538720846] [2021-10-28 22:50:23,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538720846] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:23,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:23,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-28 22:50:23,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422849430] [2021-10-28 22:50:23,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 22:50:23,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 22:50:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:50:23,136 INFO L87 Difference]: Start difference. First operand 197 states and 220 transitions. Second operand has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 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) [2021-10-28 22:50:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:23,273 INFO L93 Difference]: Finished difference Result 232 states and 260 transitions. [2021-10-28 22:50:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 22:50:23,274 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 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 88 [2021-10-28 22:50:23,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:23,275 INFO L225 Difference]: With dead ends: 232 [2021-10-28 22:50:23,275 INFO L226 Difference]: Without dead ends: 220 [2021-10-28 22:50:23,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=163, Invalid=299, Unknown=0, NotChecked=0, Total=462 [2021-10-28 22:50:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-28 22:50:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2021-10-28 22:50:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.1290322580645162) internal successors, (245), 218 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 245 transitions. [2021-10-28 22:50:23,311 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 245 transitions. Word has length 88 [2021-10-28 22:50:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:23,312 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 245 transitions. [2021-10-28 22:50:23,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.866666666666666) internal successors, (88), 14 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) [2021-10-28 22:50:23,312 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 245 transitions. [2021-10-28 22:50:23,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-28 22:50:23,316 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:23,317 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:23,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:23,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-28 22:50:23,544 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash -321929513, now seen corresponding path program 10 times [2021-10-28 22:50:23,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:23,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967379622] [2021-10-28 22:50:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:23,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:23,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:23,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1532127682] [2021-10-28 22:50:23,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:50:23,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:23,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:23,559 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:23,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 22:50:25,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:50:25,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 22:50:25,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:26,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:26,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967379622] [2021-10-28 22:50:26,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:26,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532127682] [2021-10-28 22:50:26,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532127682] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:26,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:26,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 22:50:26,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105294626] [2021-10-28 22:50:26,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 22:50:26,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 22:50:26,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-10-28 22:50:26,044 INFO L87 Difference]: Start difference. First operand 219 states and 245 transitions. Second operand has 16 states, 16 states have (on average 5.9375) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:26,208 INFO L93 Difference]: Finished difference Result 254 states and 285 transitions. [2021-10-28 22:50:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 22:50:26,209 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-10-28 22:50:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:26,211 INFO L225 Difference]: With dead ends: 254 [2021-10-28 22:50:26,211 INFO L226 Difference]: Without dead ends: 242 [2021-10-28 22:50:26,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=357, Unknown=0, NotChecked=0, Total=552 [2021-10-28 22:50:26,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-28 22:50:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 241. [2021-10-28 22:50:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 239 states have (on average 1.1297071129707112) internal successors, (270), 240 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2021-10-28 22:50:26,234 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 95 [2021-10-28 22:50:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:26,234 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2021-10-28 22:50:26,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.9375) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2021-10-28 22:50:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 22:50:26,236 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:26,236 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:26,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:26,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:26,446 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash 497676766, now seen corresponding path program 11 times [2021-10-28 22:50:26,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:26,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019211665] [2021-10-28 22:50:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:26,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:26,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:26,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412888612] [2021-10-28 22:50:26,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:50:26,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:26,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:26,460 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:26,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 22:50:45,938 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-10-28 22:50:45,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:45,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 22:50:45,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:46,354 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:46,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:46,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019211665] [2021-10-28 22:50:46,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:46,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412888612] [2021-10-28 22:50:46,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412888612] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:46,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:46,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-28 22:50:46,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017465423] [2021-10-28 22:50:46,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 22:50:46,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 22:50:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-10-28 22:50:46,357 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:46,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:46,551 INFO L93 Difference]: Finished difference Result 276 states and 310 transitions. [2021-10-28 22:50:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 22:50:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-28 22:50:46,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:46,556 INFO L225 Difference]: With dead ends: 276 [2021-10-28 22:50:46,556 INFO L226 Difference]: Without dead ends: 264 [2021-10-28 22:50:46,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=230, Invalid=420, Unknown=0, NotChecked=0, Total=650 [2021-10-28 22:50:46,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-10-28 22:50:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 263. [2021-10-28 22:50:46,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 261 states have (on average 1.1302681992337165) internal successors, (295), 262 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:46,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 295 transitions. [2021-10-28 22:50:46,582 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 295 transitions. Word has length 102 [2021-10-28 22:50:46,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:46,582 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 295 transitions. [2021-10-28 22:50:46,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 295 transitions. [2021-10-28 22:50:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-28 22:50:46,584 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:46,584 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:46,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:46,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:46,797 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -693593865, now seen corresponding path program 12 times [2021-10-28 22:50:46,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:46,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388100799] [2021-10-28 22:50:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:46,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:46,812 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:46,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701326275] [2021-10-28 22:50:46,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:50:46,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:46,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:46,814 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:46,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 22:50:47,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-10-28 22:50:47,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:47,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 22:50:47,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 173 proven. 87 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-28 22:50:48,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:48,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388100799] [2021-10-28 22:50:48,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:48,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701326275] [2021-10-28 22:50:48,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701326275] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:48,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:48,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 22:50:48,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047550176] [2021-10-28 22:50:48,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:50:48,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:48,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:50:48,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:50:48,308 INFO L87 Difference]: Start difference. First operand 263 states and 295 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:48,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:48,483 INFO L93 Difference]: Finished difference Result 396 states and 446 transitions. [2021-10-28 22:50:48,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:50:48,483 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-10-28 22:50:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:48,485 INFO L225 Difference]: With dead ends: 396 [2021-10-28 22:50:48,485 INFO L226 Difference]: Without dead ends: 249 [2021-10-28 22:50:48,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-28 22:50:48,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-10-28 22:50:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-10-28 22:50:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.125506072874494) internal successors, (278), 248 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 278 transitions. [2021-10-28 22:50:48,505 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 278 transitions. Word has length 109 [2021-10-28 22:50:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:48,505 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 278 transitions. [2021-10-28 22:50:48,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 278 transitions. [2021-10-28 22:50:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-10-28 22:50:48,506 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:48,506 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:48,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-10-28 22:50:48,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:48,707 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:48,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -554060688, now seen corresponding path program 13 times [2021-10-28 22:50:48,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:48,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781998239] [2021-10-28 22:50:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:48,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:48,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:48,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077050678] [2021-10-28 22:50:48,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 22:50:48,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:48,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:48,745 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:48,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 22:50:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:50:49,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 22:50:49,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:49,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:49,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781998239] [2021-10-28 22:50:49,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:49,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077050678] [2021-10-28 22:50:49,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077050678] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:49,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:49,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-28 22:50:49,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400771253] [2021-10-28 22:50:49,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 22:50:49,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 22:50:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-10-28 22:50:49,830 INFO L87 Difference]: Start difference. First operand 249 states and 278 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:50,029 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-10-28 22:50:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-28 22:50:50,033 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-10-28 22:50:50,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:50,035 INFO L225 Difference]: With dead ends: 284 [2021-10-28 22:50:50,035 INFO L226 Difference]: Without dead ends: 272 [2021-10-28 22:50:50,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=246, Invalid=456, Unknown=0, NotChecked=0, Total=702 [2021-10-28 22:50:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-10-28 22:50:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2021-10-28 22:50:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 269 states have (on average 1.1263940520446096) internal successors, (303), 270 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 303 transitions. [2021-10-28 22:50:50,062 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 303 transitions. Word has length 110 [2021-10-28 22:50:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:50,062 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 303 transitions. [2021-10-28 22:50:50,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 303 transitions. [2021-10-28 22:50:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 22:50:50,064 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:50,065 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:50,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:50,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 22:50:50,289 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:50,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:50,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1327092187, now seen corresponding path program 14 times [2021-10-28 22:50:50,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:50,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527872088] [2021-10-28 22:50:50,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:50,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:50,300 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:50,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63785205] [2021-10-28 22:50:50,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:50:50,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:50,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:50,321 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:50,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 22:50:51,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:50:51,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 22:50:51,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:51,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:51,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527872088] [2021-10-28 22:50:51,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:51,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63785205] [2021-10-28 22:50:51,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63785205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:51,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:51,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-28 22:50:51,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023119700] [2021-10-28 22:50:51,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 22:50:51,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 22:50:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:50:51,473 INFO L87 Difference]: Start difference. First operand 271 states and 303 transitions. Second operand has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:51,698 INFO L93 Difference]: Finished difference Result 306 states and 343 transitions. [2021-10-28 22:50:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-28 22:50:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-28 22:50:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:51,702 INFO L225 Difference]: With dead ends: 306 [2021-10-28 22:50:51,703 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 22:50:51,703 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=285, Invalid=527, Unknown=0, NotChecked=0, Total=812 [2021-10-28 22:50:51,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 22:50:51,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 293. [2021-10-28 22:50:51,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.127147766323024) internal successors, (328), 292 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:51,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 328 transitions. [2021-10-28 22:50:51,729 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 328 transitions. Word has length 117 [2021-10-28 22:50:51,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:51,729 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 328 transitions. [2021-10-28 22:50:51,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.157894736842105) internal successors, (117), 18 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:51,730 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 328 transitions. [2021-10-28 22:50:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-28 22:50:51,731 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:51,731 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:51,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:51,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 22:50:51,945 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:51,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:51,945 INFO L85 PathProgramCache]: Analyzing trace with hash -35369264, now seen corresponding path program 15 times [2021-10-28 22:50:51,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:51,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910720046] [2021-10-28 22:50:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:51,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:51,961 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:51,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431140672] [2021-10-28 22:50:51,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:50:51,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:51,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:51,963 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:51,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 22:50:52,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-28 22:50:52,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:52,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 22:50:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:53,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:53,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910720046] [2021-10-28 22:50:53,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:53,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431140672] [2021-10-28 22:50:53,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431140672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:53,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:53,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-28 22:50:53,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842404244] [2021-10-28 22:50:53,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 22:50:53,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 22:50:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-10-28 22:50:53,445 INFO L87 Difference]: Start difference. First operand 293 states and 328 transitions. Second operand has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:53,667 INFO L93 Difference]: Finished difference Result 328 states and 368 transitions. [2021-10-28 22:50:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-28 22:50:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-10-28 22:50:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:53,669 INFO L225 Difference]: With dead ends: 328 [2021-10-28 22:50:53,669 INFO L226 Difference]: Without dead ends: 316 [2021-10-28 22:50:53,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=327, Invalid=603, Unknown=0, NotChecked=0, Total=930 [2021-10-28 22:50:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-28 22:50:53,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2021-10-28 22:50:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 313 states have (on average 1.1277955271565496) internal successors, (353), 314 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:53,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 353 transitions. [2021-10-28 22:50:53,701 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 353 transitions. Word has length 124 [2021-10-28 22:50:53,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:53,702 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 353 transitions. [2021-10-28 22:50:53,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.2) internal successors, (124), 19 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:53,702 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 353 transitions. [2021-10-28 22:50:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-28 22:50:53,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:53,704 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:53,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-28 22:50:53,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 22:50:53,926 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:53,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1076570053, now seen corresponding path program 16 times [2021-10-28 22:50:53,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:53,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036468094] [2021-10-28 22:50:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:53,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:53,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:53,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016521946] [2021-10-28 22:50:53,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:50:53,938 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:53,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:53,939 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:53,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 22:50:56,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:50:56,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:50:56,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 22:50:56,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:50:57,509 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 0 proven. 566 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:50:57,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:50:57,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036468094] [2021-10-28 22:50:57,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:50:57,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016521946] [2021-10-28 22:50:57,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016521946] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:50:57,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:50:57,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-28 22:50:57,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540487351] [2021-10-28 22:50:57,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 22:50:57,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:50:57,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 22:50:57,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-10-28 22:50:57,512 INFO L87 Difference]: Start difference. First operand 315 states and 353 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:50:57,774 INFO L93 Difference]: Finished difference Result 350 states and 393 transitions. [2021-10-28 22:50:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-28 22:50:57,774 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-10-28 22:50:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:50:57,776 INFO L225 Difference]: With dead ends: 350 [2021-10-28 22:50:57,777 INFO L226 Difference]: Without dead ends: 338 [2021-10-28 22:50:57,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=372, Invalid=684, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 22:50:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-28 22:50:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 337. [2021-10-28 22:50:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.128358208955224) internal successors, (378), 336 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 378 transitions. [2021-10-28 22:50:57,814 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 378 transitions. Word has length 131 [2021-10-28 22:50:57,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:50:57,815 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 378 transitions. [2021-10-28 22:50:57,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:50:57,815 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 378 transitions. [2021-10-28 22:50:57,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-28 22:50:57,818 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:50:57,818 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:50:57,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-28 22:50:58,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 22:50:58,029 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:50:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:50:58,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1803632944, now seen corresponding path program 17 times [2021-10-28 22:50:58,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:50:58,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603539037] [2021-10-28 22:50:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:50:58,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:50:58,045 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:50:58,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1331942454] [2021-10-28 22:50:58,045 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:50:58,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:50:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:50:58,049 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:50:58,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 22:58:01,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-10-28 22:58:01,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:01,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 22:58:01,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:02,199 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:02,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:02,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603539037] [2021-10-28 22:58:02,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:02,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331942454] [2021-10-28 22:58:02,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331942454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:02,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:02,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-28 22:58:02,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889261374] [2021-10-28 22:58:02,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 22:58:02,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:02,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 22:58:02,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-10-28 22:58:02,202 INFO L87 Difference]: Start difference. First operand 337 states and 378 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:02,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:02,475 INFO L93 Difference]: Finished difference Result 372 states and 418 transitions. [2021-10-28 22:58:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 22:58:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2021-10-28 22:58:02,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:02,478 INFO L225 Difference]: With dead ends: 372 [2021-10-28 22:58:02,479 INFO L226 Difference]: Without dead ends: 360 [2021-10-28 22:58:02,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=420, Invalid=770, Unknown=0, NotChecked=0, Total=1190 [2021-10-28 22:58:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-28 22:58:02,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 359. [2021-10-28 22:58:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 357 states have (on average 1.1288515406162465) internal successors, (403), 358 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 403 transitions. [2021-10-28 22:58:02,510 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 403 transitions. Word has length 138 [2021-10-28 22:58:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:02,511 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 403 transitions. [2021-10-28 22:58:02,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 403 transitions. [2021-10-28 22:58:02,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-10-28 22:58:02,515 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:02,515 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:02,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:02,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:02,729 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:58:02,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:02,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1542113637, now seen corresponding path program 18 times [2021-10-28 22:58:02,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:02,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897815048] [2021-10-28 22:58:02,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:02,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:02,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:02,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949905413] [2021-10-28 22:58:02,748 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:58:02,748 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:02,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:02,749 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:02,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-10-28 22:58:03,877 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-28 22:58:03,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:03,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 22:58:03,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 320 proven. 146 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-28 22:58:05,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:05,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897815048] [2021-10-28 22:58:05,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:05,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949905413] [2021-10-28 22:58:05,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949905413] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:05,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:05,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 22:58:05,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368098587] [2021-10-28 22:58:05,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 22:58:05,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:05,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 22:58:05,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 22:58:05,338 INFO L87 Difference]: Start difference. First operand 359 states and 403 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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) [2021-10-28 22:58:05,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:05,645 INFO L93 Difference]: Finished difference Result 548 states and 618 transitions. [2021-10-28 22:58:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:58:05,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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 145 [2021-10-28 22:58:05,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:05,647 INFO L225 Difference]: With dead ends: 548 [2021-10-28 22:58:05,647 INFO L226 Difference]: Without dead ends: 345 [2021-10-28 22:58:05,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-28 22:58:05,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-10-28 22:58:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2021-10-28 22:58:05,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 343 states have (on average 1.1253644314868805) internal successors, (386), 344 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:05,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 386 transitions. [2021-10-28 22:58:05,673 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 386 transitions. Word has length 145 [2021-10-28 22:58:05,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:05,673 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 386 transitions. [2021-10-28 22:58:05,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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) [2021-10-28 22:58:05,674 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 386 transitions. [2021-10-28 22:58:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-28 22:58:05,675 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:05,676 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:05,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:05,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-28 22:58:05,896 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:58:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1431216834, now seen corresponding path program 19 times [2021-10-28 22:58:05,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:05,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552590181] [2021-10-28 22:58:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:05,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:05,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:05,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814790714] [2021-10-28 22:58:05,962 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 22:58:05,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:05,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:05,964 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:05,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-10-28 22:58:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:58:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 22:58:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:07,523 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:58:07,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:07,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552590181] [2021-10-28 22:58:07,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:07,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814790714] [2021-10-28 22:58:07,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814790714] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:07,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:07,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-28 22:58:07,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944542188] [2021-10-28 22:58:07,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 22:58:07,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:07,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 22:58:07,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-10-28 22:58:07,526 INFO L87 Difference]: Start difference. First operand 345 states and 386 transitions. Second operand has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:07,755 INFO L93 Difference]: Finished difference Result 380 states and 426 transitions. [2021-10-28 22:58:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-28 22:58:07,756 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-10-28 22:58:07,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:07,758 INFO L225 Difference]: With dead ends: 380 [2021-10-28 22:58:07,758 INFO L226 Difference]: Without dead ends: 368 [2021-10-28 22:58:07,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=441, Invalid=819, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 22:58:07,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-28 22:58:07,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 367. [2021-10-28 22:58:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 365 states have (on average 1.126027397260274) internal successors, (411), 366 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 411 transitions. [2021-10-28 22:58:07,795 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 411 transitions. Word has length 146 [2021-10-28 22:58:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:07,796 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 411 transitions. [2021-10-28 22:58:07,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 411 transitions. [2021-10-28 22:58:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-28 22:58:07,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:07,798 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:07,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-10-28 22:58:08,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:08,014 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:58:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash -773202029, now seen corresponding path program 20 times [2021-10-28 22:58:08,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:08,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101472933] [2021-10-28 22:58:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:08,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:08,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:08,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348759832] [2021-10-28 22:58:08,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:58:08,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:08,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:08,070 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:08,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-10-28 22:58:09,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:58:09,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:09,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 22:58:09,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:09,465 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 345 proven. 220 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-10-28 22:58:09,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:09,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101472933] [2021-10-28 22:58:09,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:09,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348759832] [2021-10-28 22:58:09,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348759832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:09,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:09,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 22:58:09,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972443759] [2021-10-28 22:58:09,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 22:58:09,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:09,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 22:58:09,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:09,466 INFO L87 Difference]: Start difference. First operand 367 states and 411 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:09,558 INFO L93 Difference]: Finished difference Result 556 states and 626 transitions. [2021-10-28 22:58:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 22:58:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-10-28 22:58:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:09,560 INFO L225 Difference]: With dead ends: 556 [2021-10-28 22:58:09,560 INFO L226 Difference]: Without dead ends: 353 [2021-10-28 22:58:09,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 22:58:09,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-10-28 22:58:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-10-28 22:58:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 351 states have (on average 1.1225071225071226) internal successors, (394), 352 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 394 transitions. [2021-10-28 22:58:09,601 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 394 transitions. Word has length 153 [2021-10-28 22:58:09,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:09,601 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 394 transitions. [2021-10-28 22:58:09,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:09,601 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 394 transitions. [2021-10-28 22:58:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-28 22:58:09,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:09,603 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:09,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:09,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:09,818 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:58:09,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:09,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1624092076, now seen corresponding path program 21 times [2021-10-28 22:58:09,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:09,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399816943] [2021-10-28 22:58:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:09,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:09,864 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:09,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988008547] [2021-10-28 22:58:09,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 22:58:09,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:09,866 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:09,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-10-28 22:58:11,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-10-28 22:58:11,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:11,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 22:58:11,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 308 proven. 309 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-10-28 22:58:11,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:11,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399816943] [2021-10-28 22:58:11,704 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:11,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988008547] [2021-10-28 22:58:11,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988008547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:11,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:11,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 22:58:11,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792802576] [2021-10-28 22:58:11,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 22:58:11,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 22:58:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:11,706 INFO L87 Difference]: Start difference. First operand 353 states and 394 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:11,871 INFO L93 Difference]: Finished difference Result 528 states and 593 transitions. [2021-10-28 22:58:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 22:58:11,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-10-28 22:58:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:11,874 INFO L225 Difference]: With dead ends: 528 [2021-10-28 22:58:11,874 INFO L226 Difference]: Without dead ends: 339 [2021-10-28 22:58:11,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-28 22:58:11,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-10-28 22:58:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-10-28 22:58:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 337 states have (on average 1.1186943620178043) internal successors, (377), 338 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 377 transitions. [2021-10-28 22:58:11,911 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 377 transitions. Word has length 154 [2021-10-28 22:58:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:11,913 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 377 transitions. [2021-10-28 22:58:11,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:11,914 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 377 transitions. [2021-10-28 22:58:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-28 22:58:11,915 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:11,915 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:11,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:12,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-10-28 22:58:12,138 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:58:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:12,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1808426545, now seen corresponding path program 22 times [2021-10-28 22:58:12,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:12,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280862551] [2021-10-28 22:58:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:12,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:12,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:12,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981672232] [2021-10-28 22:58:12,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 22:58:12,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:12,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:12,202 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:12,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-10-28 22:58:13,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 22:58:13,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:58:13,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 22:58:13,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:58:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 243 proven. 413 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-10-28 22:58:14,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:58:14,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280862551] [2021-10-28 22:58:14,021 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:58:14,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981672232] [2021-10-28 22:58:14,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981672232] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:58:14,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:58:14,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 22:58:14,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391842178] [2021-10-28 22:58:14,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 22:58:14,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:58:14,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 22:58:14,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:58:14,023 INFO L87 Difference]: Start difference. First operand 339 states and 377 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:58:14,231 INFO L93 Difference]: Finished difference Result 500 states and 560 transitions. [2021-10-28 22:58:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:58:14,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-10-28 22:58:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:58:14,234 INFO L225 Difference]: With dead ends: 500 [2021-10-28 22:58:14,234 INFO L226 Difference]: Without dead ends: 325 [2021-10-28 22:58:14,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-28 22:58:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-10-28 22:58:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-10-28 22:58:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 323 states have (on average 1.1145510835913313) internal successors, (360), 324 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 360 transitions. [2021-10-28 22:58:14,263 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 360 transitions. Word has length 155 [2021-10-28 22:58:14,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:58:14,263 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 360 transitions. [2021-10-28 22:58:14,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:58:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 360 transitions. [2021-10-28 22:58:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-10-28 22:58:14,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:58:14,265 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:58:14,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-10-28 22:58:14,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-10-28 22:58:14,490 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:58:14,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:58:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1571014424, now seen corresponding path program 23 times [2021-10-28 22:58:14,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:58:14,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125848559] [2021-10-28 22:58:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:58:14,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:58:14,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:58:14,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450749984] [2021-10-28 22:58:14,538 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 22:58:14,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:58:14,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:58:14,539 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:58:14,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-10-28 22:59:16,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 22:59:16,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:59:16,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 22:59:16,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:59:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 150 proven. 532 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 22:59:17,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:17,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125848559] [2021-10-28 22:59:17,164 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:59:17,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450749984] [2021-10-28 22:59:17,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450749984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:59:17,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:59:17,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 22:59:17,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339535425] [2021-10-28 22:59:17,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 22:59:17,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 22:59:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:59:17,166 INFO L87 Difference]: Start difference. First operand 325 states and 360 transitions. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:59:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:17,350 INFO L93 Difference]: Finished difference Result 472 states and 527 transitions. [2021-10-28 22:59:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 22:59:17,350 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-10-28 22:59:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:17,352 INFO L225 Difference]: With dead ends: 472 [2021-10-28 22:59:17,352 INFO L226 Difference]: Without dead ends: 311 [2021-10-28 22:59:17,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-28 22:59:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-10-28 22:59:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2021-10-28 22:59:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 309 states have (on average 1.110032362459547) internal successors, (343), 310 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:59:17,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 343 transitions. [2021-10-28 22:59:17,403 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 343 transitions. Word has length 156 [2021-10-28 22:59:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:17,404 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 343 transitions. [2021-10-28 22:59:17,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:59:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 343 transitions. [2021-10-28 22:59:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-10-28 22:59:17,406 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:17,406 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:17,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-10-28 22:59:17,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-28 22:59:17,621 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:59:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash 255477259, now seen corresponding path program 24 times [2021-10-28 22:59:17,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:17,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972481894] [2021-10-28 22:59:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:17,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:17,643 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:59:17,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961408754] [2021-10-28 22:59:17,644 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 22:59:17,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:59:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:59:17,653 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:59:17,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-28 22:59:18,944 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-10-28 22:59:18,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:59:18,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 84 conjunts are in the unsatisfiable core [2021-10-28 22:59:18,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:59:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 695 backedges. 29 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:59:22,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:59:22,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972481894] [2021-10-28 22:59:22,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 22:59:22,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961408754] [2021-10-28 22:59:22,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961408754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:59:22,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 22:59:22,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-10-28 22:59:22,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123203670] [2021-10-28 22:59:22,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-28 22:59:22,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:59:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-28 22:59:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2021-10-28 22:59:22,985 INFO L87 Difference]: Start difference. First operand 311 states and 343 transitions. Second operand has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:59:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:59:25,677 INFO L93 Difference]: Finished difference Result 499 states and 556 transitions. [2021-10-28 22:59:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-28 22:59:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-10-28 22:59:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:59:25,680 INFO L225 Difference]: With dead ends: 499 [2021-10-28 22:59:25,680 INFO L226 Difference]: Without dead ends: 297 [2021-10-28 22:59:25,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2021-10-28 22:59:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-28 22:59:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-10-28 22:59:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 295 states have (on average 1.1050847457627118) internal successors, (326), 296 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:59:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2021-10-28 22:59:25,709 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 157 [2021-10-28 22:59:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:59:25,709 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2021-10-28 22:59:25,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.413793103448276) internal successors, (157), 29 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:59:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2021-10-28 22:59:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-10-28 22:59:25,711 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:59:25,711 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:25,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-28 22:59:25,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-28 22:59:25,935 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-28 22:59:25,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:59:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1197626916, now seen corresponding path program 25 times [2021-10-28 22:59:25,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:59:25,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502709426] [2021-10-28 22:59:25,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:59:25,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:59:25,950 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 22:59:25,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345429768] [2021-10-28 22:59:25,950 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 22:59:25,951 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:59:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:59:25,952 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:59:25,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-10-28 22:59:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:59:28,027 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 22:59:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 22:59:28,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 22:59:28,272 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 22:59:28,273 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,275 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:59:28,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-10-28 22:59:28,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:59:28,497 INFO L731 BasicCegarLoop]: Path program histogram: [25, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 22:59:28,499 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:59:28,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:59:28 BoogieIcfgContainer [2021-10-28 22:59:28,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:59:28,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:59:28,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:59:28,617 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:59:28,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:49:55" (3/4) ... [2021-10-28 22:59:28,619 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 22:59:28,721 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:59:28,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:59:28,723 INFO L168 Benchmark]: Toolchain (without parser) took 573593.83 ms. Allocated memory was 102.8 MB in the beginning and 698.4 MB in the end (delta: 595.6 MB). Free memory was 71.1 MB in the beginning and 337.1 MB in the end (delta: -266.0 MB). Peak memory consumption was 329.7 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,723 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:59:28,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.56 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 77.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.07 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 76.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,724 INFO L168 Benchmark]: Boogie Preprocessor took 47.32 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 74.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,725 INFO L168 Benchmark]: RCFGBuilder took 358.94 ms. Allocated memory is still 102.8 MB. Free memory was 74.9 MB in the beginning and 64.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,725 INFO L168 Benchmark]: TraceAbstraction took 572753.51 ms. Allocated memory was 102.8 MB in the beginning and 698.4 MB in the end (delta: 595.6 MB). Free memory was 63.7 MB in the beginning and 347.6 MB in the end (delta: -283.9 MB). Peak memory consumption was 313.9 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,725 INFO L168 Benchmark]: Witness Printer took 105.09 ms. Allocated memory is still 698.4 MB. Free memory was 347.6 MB in the beginning and 337.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:59:28,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.56 ms. Allocated memory is still 102.8 MB. Free memory was 70.9 MB in the beginning and 77.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.07 ms. Allocated memory is still 102.8 MB. Free memory was 77.9 MB in the beginning and 76.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.32 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 74.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 358.94 ms. Allocated memory is still 102.8 MB. Free memory was 74.9 MB in the beginning and 64.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 572753.51 ms. Allocated memory was 102.8 MB in the beginning and 698.4 MB in the end (delta: 595.6 MB). Free memory was 63.7 MB in the beginning and 347.6 MB in the end (delta: -283.9 MB). Peak memory consumption was 313.9 MB. Max. memory is 16.1 GB. * Witness Printer took 105.09 ms. Allocated memory is still 698.4 MB. Free memory was 347.6 MB in the beginning and 337.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=6] [L34] EXPR counter++ VAL [counter=7] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=7] [L34] EXPR counter++ VAL [counter=8] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=8] [L34] EXPR counter++ VAL [counter=9] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=9] [L34] EXPR counter++ VAL [counter=10] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=10] [L34] EXPR counter++ VAL [counter=11] [L34] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L38] COND TRUE !(r >= d) VAL [counter=11] [L44] EXPR counter++ VAL [counter=12] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=12] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=12] [L44] EXPR counter++ VAL [counter=13] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=13] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=13] [L44] EXPR counter++ VAL [counter=14] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=14] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=14] [L44] EXPR counter++ VAL [counter=15] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=15] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=15] [L44] EXPR counter++ VAL [counter=16] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=16] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=16] [L44] EXPR counter++ VAL [counter=17] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=17] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=17] [L44] EXPR counter++ VAL [counter=18] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=18] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=18] [L44] EXPR counter++ VAL [counter=19] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=19] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=19] [L44] EXPR counter++ VAL [counter=20] [L44] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=20] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=20] [L44] EXPR counter++ VAL [counter=21] [L44] COND FALSE !(counter++<20) [L15] COND TRUE !(cond) VAL [counter=21] [L17] reach_error() VAL [counter=21] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 572.5s, OverallIterations: 47, TraceHistogramMax: 15, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1598 SDtfs, 4349 SDslu, 9685 SDs, 0 SdLazy, 5395 SolverSat, 765 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3332 GetRequests, 2744 SyntacticMatches, 4 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=367occurred in iteration=41, InterpolantAutomatonStates: 637, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 46 MinimizatonAttempts, 188 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 511.8s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 3354 NumberOfCodeBlocks, 3256 NumberOfCodeBlocksAsserted, 182 NumberOfCheckSat, 3150 ConstructedInterpolants, 1 QuantifiedInterpolants, 14489 SizeOfPredicates, 304 NumberOfNonLiveVariables, 11776 ConjunctsInSsa, 979 ConjunctsInUnsatCore, 46 InterpolantComputations, 6 PerfectInterpolantSequences, 2508/10028 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 22:59:28,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a1db577-e7b9-4c5e-b6be-da8200dbbda7/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...