./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_lazy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_lazy.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G --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 b26873cfd586f35040b8fa56225beaa479db089ab89500d17d6395862bf9072f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:31:33,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:31:33,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:31:33,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:31:33,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:31:33,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:31:33,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:31:33,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:31:33,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:31:33,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:31:33,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:31:33,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:31:33,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:31:33,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:31:33,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:31:33,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:31:33,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:31:33,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:31:33,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:31:33,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:31:33,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:31:33,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:31:33,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:31:33,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:31:33,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:31:33,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:31:33,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:31:33,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:31:33,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:31:33,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:31:33,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:31:33,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:31:33,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:31:33,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:31:33,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:31:33,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:31:33,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:31:33,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:31:33,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:31:33,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:31:33,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:31:33,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:31:33,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:31:33,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:31:33,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:31:33,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:31:33,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:31:33,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:31:33,873 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:31:33,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:31:33,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:31:33,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:31:33,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:31:33,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:31:33,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:31:33,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:31:33,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:31:33,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:31:33,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:31:33,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:31:33,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:31:33,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:31:33,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:31:33,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:31:33,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:33,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:31:33,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:31:33,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:31:33,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:31:33,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:31:33,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:31:33,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:31:33,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:31:33,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:31:33,882 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_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b26873cfd586f35040b8fa56225beaa479db089ab89500d17d6395862bf9072f [2021-11-23 12:31:34,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:31:34,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:31:34,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:31:34,340 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:31:34,341 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:31:34,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-pthread/cs_lazy.i [2021-11-23 12:31:34,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/data/aa61c3cd4/e3cec1b2064d4e1ea3ce3f82ded46dc2/FLAGb03d7e964 [2021-11-23 12:31:35,238 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:31:35,245 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/sv-benchmarks/c/seq-pthread/cs_lazy.i [2021-11-23 12:31:35,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/data/aa61c3cd4/e3cec1b2064d4e1ea3ce3f82ded46dc2/FLAGb03d7e964 [2021-11-23 12:31:35,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/data/aa61c3cd4/e3cec1b2064d4e1ea3ce3f82ded46dc2 [2021-11-23 12:31:35,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:31:35,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:31:35,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:35,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:31:35,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:31:35,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:35" (1/1) ... [2021-11-23 12:31:35,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e76f5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:35, skipping insertion in model container [2021-11-23 12:31:35,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:35" (1/1) ... [2021-11-23 12:31:35,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:31:35,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:31:35,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/sv-benchmarks/c/seq-pthread/cs_lazy.i[23394,23407] [2021-11-23 12:31:36,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:36,180 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:31:36,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/sv-benchmarks/c/seq-pthread/cs_lazy.i[23394,23407] [2021-11-23 12:31:36,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:36,384 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:31:36,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36 WrapperNode [2021-11-23 12:31:36,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:36,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:36,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:31:36,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:31:36,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,584 INFO L137 Inliner]: procedures = 145, calls = 212, calls flagged for inlining = 48, calls inlined = 171, statements flattened = 3277 [2021-11-23 12:31:36,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:36,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:31:36,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:31:36,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:31:36,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:31:36,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:31:36,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:31:36,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:31:36,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (1/1) ... [2021-11-23 12:31:36,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:36,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:36,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:31:36,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:31:36,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:31:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:31:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:31:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:31:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:31:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 12:31:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:31:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:31:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:31:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:31:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:31:37,196 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:31:37,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:31:37,241 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,243 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,321 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,322 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,361 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,363 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,389 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:37,390 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 12:31:40,810 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##686: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,810 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##685: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##693: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##692: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-11: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,811 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-12: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-13: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-35: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-36: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-37: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,812 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-59: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-60: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-61: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-83: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-84: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L558-85: assume { :end_inline___CS_cs } true; [2021-11-23 12:31:40,813 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-33: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-33: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2); [2021-11-23 12:31:40,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-35: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-33: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,814 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-33: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-35: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-36: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-36: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-99: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-99: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2); [2021-11-23 12:31:40,815 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-38: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-39: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-39: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-101: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,816 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-41: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##421: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##420: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##427: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##428: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,817 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-165: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-165: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2); [2021-11-23 12:31:40,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-105: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,818 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-105: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,823 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-167: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,823 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-107: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,824 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-108: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,834 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-108: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,835 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-110: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,835 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-111: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,835 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-111: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,836 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-113: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,836 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-231: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,836 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-231: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2); [2021-11-23 12:31:40,836 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L561-233: ~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,837 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-177: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,837 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-177: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,837 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-179: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,837 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-180: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,838 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-180: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,838 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-182: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,838 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-183: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,838 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-183: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,839 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-185: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,840 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-249: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,840 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-249: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,840 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-251: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,840 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-252: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,841 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-252: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,841 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-254: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,841 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-255: assume 0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 12:31:40,841 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-255: assume !(0 != __CS_cs_#t~nondet4#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 12:31:40,842 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L563-257: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 12:31:40,842 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-2: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-2: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,843 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-4: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-6: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L710-6: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,844 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1; [2021-11-23 12:31:40,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-2: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-2: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1; [2021-11-23 12:31:40,845 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-4: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,846 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-4: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1; [2021-11-23 12:31:40,846 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-6: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,846 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L712-6: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1; [2021-11-23 12:31:40,847 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,847 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,847 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-2: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,847 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-2: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,849 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-4: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,849 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,850 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-6: assume 0 != ~__CS_ret~0 % 256;thread3_#res#1.base, thread3_#res#1.offset := 0, 0; [2021-11-23 12:31:40,850 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L714-6: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 12:31:40,851 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##951: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,851 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##950: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,851 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##958: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,852 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##957: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,853 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##155: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,857 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##156: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,858 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume !(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);assume false; [2021-11-23 12:31:40,858 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !!(~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2);~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 12:31:40,858 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:31:40,889 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:31:40,891 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:31:40,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:40 BoogieIcfgContainer [2021-11-23 12:31:40,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:31:40,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:31:40,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:31:40,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:31:40,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:31:35" (1/3) ... [2021-11-23 12:31:40,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d38d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:40, skipping insertion in model container [2021-11-23 12:31:40,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:36" (2/3) ... [2021-11-23 12:31:40,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23d38d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:40, skipping insertion in model container [2021-11-23 12:31:40,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:40" (3/3) ... [2021-11-23 12:31:40,922 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_lazy.i [2021-11-23 12:31:40,930 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:31:40,930 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:31:40,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:31:41,006 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:31:41,006 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:31:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 771 states, 769 states have (on average 1.504551365409623) internal successors, (1157), 770 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 12:31:41,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:41,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:41,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1421071177, now seen corresponding path program 1 times [2021-11-23 12:31:41,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:41,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996239784] [2021-11-23 12:31:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:41,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:41,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:41,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996239784] [2021-11-23 12:31:41,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996239784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:41,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:41,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:41,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588239564] [2021-11-23 12:31:41,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:41,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:41,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:41,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:41,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:41,537 INFO L87 Difference]: Start difference. First operand has 771 states, 769 states have (on average 1.504551365409623) internal successors, (1157), 770 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:41,727 INFO L93 Difference]: Finished difference Result 1545 states and 2321 transitions. [2021-11-23 12:31:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:41,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 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 [2021-11-23 12:31:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:41,764 INFO L225 Difference]: With dead ends: 1545 [2021-11-23 12:31:41,765 INFO L226 Difference]: Without dead ends: 772 [2021-11-23 12:31:41,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:41,783 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 5 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:41,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2086 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-23 12:31:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 768. [2021-11-23 12:31:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.36245110821382) internal successors, (1045), 767 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1045 transitions. [2021-11-23 12:31:41,924 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1045 transitions. Word has length 34 [2021-11-23 12:31:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:41,924 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 1045 transitions. [2021-11-23 12:31:41,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1045 transitions. [2021-11-23 12:31:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 12:31:41,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:41,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:41,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:31:41,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1370848959, now seen corresponding path program 1 times [2021-11-23 12:31:41,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:41,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118885569] [2021-11-23 12:31:41,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:41,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:42,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:42,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:42,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118885569] [2021-11-23 12:31:42,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118885569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:42,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:42,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:42,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758552839] [2021-11-23 12:31:42,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:42,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:31:42,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:42,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:31:42,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:42,061 INFO L87 Difference]: Start difference. First operand 768 states and 1045 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:42,108 INFO L93 Difference]: Finished difference Result 1535 states and 2090 transitions. [2021-11-23 12:31:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:31:42,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 [2021-11-23 12:31:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:42,115 INFO L225 Difference]: With dead ends: 1535 [2021-11-23 12:31:42,116 INFO L226 Difference]: Without dead ends: 770 [2021-11-23 12:31:42,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:31:42,119 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 1 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:42,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2081 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-11-23 12:31:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 769. [2021-11-23 12:31:42,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.3619791666666667) internal successors, (1046), 768 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1046 transitions. [2021-11-23 12:31:42,154 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1046 transitions. Word has length 38 [2021-11-23 12:31:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:42,155 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1046 transitions. [2021-11-23 12:31:42,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,155 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1046 transitions. [2021-11-23 12:31:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 12:31:42,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:42,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:42,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:31:42,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:42,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 965094141, now seen corresponding path program 1 times [2021-11-23 12:31:42,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:42,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604125573] [2021-11-23 12:31:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:42,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:42,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:42,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604125573] [2021-11-23 12:31:42,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604125573] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:31:42,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300051936] [2021-11-23 12:31:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:42,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:42,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:42,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:31:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:42,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:42,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:42,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:42,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:42,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300051936] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:31:42,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:31:42,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:31:42,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409514402] [2021-11-23 12:31:42,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:31:42,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:31:42,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:31:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:42,858 INFO L87 Difference]: Start difference. First operand 769 states and 1046 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:42,954 INFO L93 Difference]: Finished difference Result 1541 states and 2098 transitions. [2021-11-23 12:31:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:31:42,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-23 12:31:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:42,961 INFO L225 Difference]: With dead ends: 1541 [2021-11-23 12:31:42,961 INFO L226 Difference]: Without dead ends: 775 [2021-11-23 12:31:42,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:42,967 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 4 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4159 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:42,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4159 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-23 12:31:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2021-11-23 12:31:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 1.3591731266149871) internal successors, (1052), 774 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 1052 transitions. [2021-11-23 12:31:43,002 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 1052 transitions. Word has length 40 [2021-11-23 12:31:43,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:43,003 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 1052 transitions. [2021-11-23 12:31:43,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 1052 transitions. [2021-11-23 12:31:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 12:31:43,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:43,008 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:43,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:43,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:43,223 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:43,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:43,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1237114185, now seen corresponding path program 2 times [2021-11-23 12:31:43,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:43,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554593056] [2021-11-23 12:31:43,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:43,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 12:31:43,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:43,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554593056] [2021-11-23 12:31:43,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554593056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:31:43,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383449579] [2021-11-23 12:31:43,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:31:43,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:43,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:43,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:31:43,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 12:31:43,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:31:43,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:31:43,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 12:31:43,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 12:31:43,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383449579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:43,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:31:43,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-23 12:31:43,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016301048] [2021-11-23 12:31:43,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:43,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:43,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:43,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:43,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:43,918 INFO L87 Difference]: Start difference. First operand 775 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:44,087 INFO L93 Difference]: Finished difference Result 1412 states and 1916 transitions. [2021-11-23 12:31:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 46 [2021-11-23 12:31:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:44,098 INFO L225 Difference]: With dead ends: 1412 [2021-11-23 12:31:44,098 INFO L226 Difference]: Without dead ends: 1351 [2021-11-23 12:31:44,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:31:44,106 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 965 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 3488 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:44,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 3488 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:31:44,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-11-23 12:31:44,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1348. [2021-11-23 12:31:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1347 states have (on average 1.3518930957683741) internal successors, (1821), 1347 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1821 transitions. [2021-11-23 12:31:44,162 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1821 transitions. Word has length 46 [2021-11-23 12:31:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:44,164 INFO L470 AbstractCegarLoop]: Abstraction has 1348 states and 1821 transitions. [2021-11-23 12:31:44,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1821 transitions. [2021-11-23 12:31:44,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:31:44,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:44,171 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:44,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:44,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:44,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 743226101, now seen corresponding path program 1 times [2021-11-23 12:31:44,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:44,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796590512] [2021-11-23 12:31:44,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:44,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 12:31:44,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796590512] [2021-11-23 12:31:44,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796590512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:31:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720789263] [2021-11-23 12:31:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:44,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:44,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:44,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:44,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:31:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:44,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:31:44,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 12:31:45,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 12:31:45,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720789263] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:31:45,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:31:45,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-23 12:31:45,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343867359] [2021-11-23 12:31:45,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:31:45,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:45,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:45,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:45,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:45,273 INFO L87 Difference]: Start difference. First operand 1348 states and 1821 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:45,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:45,356 INFO L93 Difference]: Finished difference Result 2693 states and 3639 transitions. [2021-11-23 12:31:45,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:45,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:31:45,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:45,367 INFO L225 Difference]: With dead ends: 2693 [2021-11-23 12:31:45,367 INFO L226 Difference]: Without dead ends: 1360 [2021-11-23 12:31:45,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:45,371 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 10 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:45,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2080 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2021-11-23 12:31:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1360. [2021-11-23 12:31:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 1.3495217071376011) internal successors, (1834), 1359 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1834 transitions. [2021-11-23 12:31:45,419 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1834 transitions. Word has length 74 [2021-11-23 12:31:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:45,419 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1834 transitions. [2021-11-23 12:31:45,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1834 transitions. [2021-11-23 12:31:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:31:45,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:45,424 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:45,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:45,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:45,639 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1056714805, now seen corresponding path program 2 times [2021-11-23 12:31:45,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:45,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386921940] [2021-11-23 12:31:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:45,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:31:45,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:45,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386921940] [2021-11-23 12:31:45,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386921940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:45,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:45,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:31:45,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501334535] [2021-11-23 12:31:45,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:45,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:45,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:45,903 INFO L87 Difference]: Start difference. First operand 1360 states and 1834 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:46,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:46,536 INFO L93 Difference]: Finished difference Result 3741 states and 5036 transitions. [2021-11-23 12:31:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:31:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:46,555 INFO L225 Difference]: With dead ends: 3741 [2021-11-23 12:31:46,556 INFO L226 Difference]: Without dead ends: 2522 [2021-11-23 12:31:46,561 INFO L932 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 [2021-11-23 12:31:46,563 INFO L933 BasicCegarLoop]: 1066 mSDtfsCounter, 1675 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:46,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1675 Valid, 2383 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 12:31:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-11-23 12:31:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 1235. [2021-11-23 12:31:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 1.3508914100486225) internal successors, (1667), 1234 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1667 transitions. [2021-11-23 12:31:46,634 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1667 transitions. Word has length 86 [2021-11-23 12:31:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:46,637 INFO L470 AbstractCegarLoop]: Abstraction has 1235 states and 1667 transitions. [2021-11-23 12:31:46,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1667 transitions. [2021-11-23 12:31:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:31:46,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:46,647 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:46,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:31:46,648 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:46,648 INFO L85 PathProgramCache]: Analyzing trace with hash 751152497, now seen corresponding path program 1 times [2021-11-23 12:31:46,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:46,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880025050] [2021-11-23 12:31:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:46,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:46,929 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:31:46,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:46,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880025050] [2021-11-23 12:31:46,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880025050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:46,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:46,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:46,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653092493] [2021-11-23 12:31:46,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:46,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:46,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:46,934 INFO L87 Difference]: Start difference. First operand 1235 states and 1667 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:48,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:31:49,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:49,618 INFO L93 Difference]: Finished difference Result 2477 states and 3331 transitions. [2021-11-23 12:31:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:49,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:31:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:49,636 INFO L225 Difference]: With dead ends: 2477 [2021-11-23 12:31:49,636 INFO L226 Difference]: Without dead ends: 2185 [2021-11-23 12:31:49,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:49,639 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 748 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:49,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 2934 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 12:31:49,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2021-11-23 12:31:49,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2082. [2021-11-23 12:31:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 2081 states have (on average 1.3613647284959154) internal successors, (2833), 2081 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2833 transitions. [2021-11-23 12:31:49,727 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2833 transitions. Word has length 86 [2021-11-23 12:31:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:49,728 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 2833 transitions. [2021-11-23 12:31:49,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2833 transitions. [2021-11-23 12:31:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:31:49,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:49,733 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:49,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:31:49,734 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:49,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 898745395, now seen corresponding path program 1 times [2021-11-23 12:31:49,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:49,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828071169] [2021-11-23 12:31:49,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:49,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:31:49,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:49,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828071169] [2021-11-23 12:31:49,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828071169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:49,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:49,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:49,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763596135] [2021-11-23 12:31:49,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:49,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:49,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:49,975 INFO L87 Difference]: Start difference. First operand 2082 states and 2833 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:51,081 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:31:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:51,905 INFO L93 Difference]: Finished difference Result 2691 states and 3618 transitions. [2021-11-23 12:31:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:31:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:51,921 INFO L225 Difference]: With dead ends: 2691 [2021-11-23 12:31:51,921 INFO L226 Difference]: Without dead ends: 1898 [2021-11-23 12:31:51,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:51,925 INFO L933 BasicCegarLoop]: 995 mSDtfsCounter, 552 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:51,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 2810 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-23 12:31:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2021-11-23 12:31:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1791. [2021-11-23 12:31:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1790 states have (on average 1.3564245810055866) internal successors, (2428), 1790 states have internal predecessors, (2428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2428 transitions. [2021-11-23 12:31:52,002 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2428 transitions. Word has length 86 [2021-11-23 12:31:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:52,003 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 2428 transitions. [2021-11-23 12:31:52,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2428 transitions. [2021-11-23 12:31:52,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 12:31:52,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:52,008 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:52,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:31:52,008 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 166245941, now seen corresponding path program 1 times [2021-11-23 12:31:52,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:52,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682239096] [2021-11-23 12:31:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:52,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:31:52,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:52,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682239096] [2021-11-23 12:31:52,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682239096] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:52,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:52,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:31:52,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337512766] [2021-11-23 12:31:52,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:52,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:31:52,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:31:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:31:52,194 INFO L87 Difference]: Start difference. First operand 1791 states and 2428 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:54,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:31:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:54,675 INFO L93 Difference]: Finished difference Result 2847 states and 3824 transitions. [2021-11-23 12:31:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-23 12:31:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:54,689 INFO L225 Difference]: With dead ends: 2847 [2021-11-23 12:31:54,689 INFO L226 Difference]: Without dead ends: 1611 [2021-11-23 12:31:54,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:54,695 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 356 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:54,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 2818 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 12:31:54,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-23 12:31:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1500. [2021-11-23 12:31:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.3495663775850566) internal successors, (2023), 1499 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2023 transitions. [2021-11-23 12:31:54,758 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2023 transitions. Word has length 86 [2021-11-23 12:31:54,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:54,758 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 2023 transitions. [2021-11-23 12:31:54,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2023 transitions. [2021-11-23 12:31:54,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 12:31:54,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:54,763 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:54,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:31:54,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1436771365, now seen corresponding path program 1 times [2021-11-23 12:31:54,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:54,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778414893] [2021-11-23 12:31:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:54,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:31:58,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:58,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778414893] [2021-11-23 12:31:58,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778414893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:58,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:58,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:31:58,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131994784] [2021-11-23 12:31:58,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:58,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:31:58,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:58,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:31:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:31:58,698 INFO L87 Difference]: Start difference. First operand 1500 states and 2023 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:01,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:01,031 INFO L93 Difference]: Finished difference Result 3847 states and 5099 transitions. [2021-11-23 12:32:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:32:01,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-23 12:32:01,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:01,049 INFO L225 Difference]: With dead ends: 3847 [2021-11-23 12:32:01,050 INFO L226 Difference]: Without dead ends: 2327 [2021-11-23 12:32:01,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:32:01,054 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 1335 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:01,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1335 Valid, 1791 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 12:32:01,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2021-11-23 12:32:01,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 1923. [2021-11-23 12:32:01,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1922 states have (on average 1.2637877211238293) internal successors, (2429), 1922 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2429 transitions. [2021-11-23 12:32:01,149 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2429 transitions. Word has length 93 [2021-11-23 12:32:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:01,149 INFO L470 AbstractCegarLoop]: Abstraction has 1923 states and 2429 transitions. [2021-11-23 12:32:01,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2429 transitions. [2021-11-23 12:32:01,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 12:32:01,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:01,155 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:01,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 12:32:01,155 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:01,156 INFO L85 PathProgramCache]: Analyzing trace with hash -99384353, now seen corresponding path program 1 times [2021-11-23 12:32:01,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:01,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962448418] [2021-11-23 12:32:01,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:01,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:32:04,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:04,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962448418] [2021-11-23 12:32:04,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962448418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:04,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:04,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:32:04,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642060551] [2021-11-23 12:32:04,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:04,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:32:04,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:32:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:32:04,237 INFO L87 Difference]: Start difference. First operand 1923 states and 2429 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:06,438 INFO L93 Difference]: Finished difference Result 4170 states and 5243 transitions. [2021-11-23 12:32:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:32:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-23 12:32:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:06,455 INFO L225 Difference]: With dead ends: 4170 [2021-11-23 12:32:06,456 INFO L226 Difference]: Without dead ends: 2390 [2021-11-23 12:32:06,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:32:06,460 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1495 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:06,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1495 Valid, 1925 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 12:32:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-11-23 12:32:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2099. [2021-11-23 12:32:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.2602478551000953) internal successors, (2644), 2098 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:06,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2644 transitions. [2021-11-23 12:32:06,563 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2644 transitions. Word has length 93 [2021-11-23 12:32:06,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:06,565 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 2644 transitions. [2021-11-23 12:32:06,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:06,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2644 transitions. [2021-11-23 12:32:06,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 12:32:06,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:06,575 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:06,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:32:06,576 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1369340765, now seen corresponding path program 1 times [2021-11-23 12:32:06,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:06,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704510542] [2021-11-23 12:32:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:06,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:32:08,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:08,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704510542] [2021-11-23 12:32:08,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704510542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:08,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:08,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:32:08,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426879371] [2021-11-23 12:32:08,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:08,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:32:08,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:08,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:32:08,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:32:08,241 INFO L87 Difference]: Start difference. First operand 2099 states and 2644 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:08,304 INFO L93 Difference]: Finished difference Result 2380 states and 2979 transitions. [2021-11-23 12:32:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:32:08,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 94 [2021-11-23 12:32:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:08,319 INFO L225 Difference]: With dead ends: 2380 [2021-11-23 12:32:08,320 INFO L226 Difference]: Without dead ends: 2099 [2021-11-23 12:32:08,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:32:08,323 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 0 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:08,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1808 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:32:08,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2021-11-23 12:32:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 2099. [2021-11-23 12:32:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.259771210676835) internal successors, (2643), 2098 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2643 transitions. [2021-11-23 12:32:08,414 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2643 transitions. Word has length 94 [2021-11-23 12:32:08,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:08,415 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 2643 transitions. [2021-11-23 12:32:08,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:08,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2643 transitions. [2021-11-23 12:32:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 12:32:08,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:08,421 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:08,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:32:08,422 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:08,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1665923993, now seen corresponding path program 1 times [2021-11-23 12:32:08,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:08,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770439326] [2021-11-23 12:32:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:08,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:32:10,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:10,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770439326] [2021-11-23 12:32:10,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770439326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:10,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:10,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:32:10,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65052295] [2021-11-23 12:32:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:10,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:32:10,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:32:10,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:32:10,815 INFO L87 Difference]: Start difference. First operand 2099 states and 2643 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:12,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:12,746 INFO L93 Difference]: Finished difference Result 3963 states and 4971 transitions. [2021-11-23 12:32:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:32:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-23 12:32:12,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:12,764 INFO L225 Difference]: With dead ends: 3963 [2021-11-23 12:32:12,764 INFO L226 Difference]: Without dead ends: 2429 [2021-11-23 12:32:12,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:32:12,795 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 1400 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:12,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 2229 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 12:32:12,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-11-23 12:32:12,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2266. [2021-11-23 12:32:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2266 states, 2265 states have (on average 1.209271523178808) internal successors, (2739), 2265 states have internal predecessors, (2739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2266 states to 2266 states and 2739 transitions. [2021-11-23 12:32:12,892 INFO L78 Accepts]: Start accepts. Automaton has 2266 states and 2739 transitions. Word has length 105 [2021-11-23 12:32:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:12,892 INFO L470 AbstractCegarLoop]: Abstraction has 2266 states and 2739 transitions. [2021-11-23 12:32:12,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2266 states and 2739 transitions. [2021-11-23 12:32:12,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 12:32:12,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:12,900 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:12,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:32:12,900 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash 245118565, now seen corresponding path program 1 times [2021-11-23 12:32:12,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:12,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591992244] [2021-11-23 12:32:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:12,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 12:32:15,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:15,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591992244] [2021-11-23 12:32:15,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591992244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:15,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:15,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:32:15,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263096462] [2021-11-23 12:32:15,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:15,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:32:15,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:32:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:32:15,283 INFO L87 Difference]: Start difference. First operand 2266 states and 2739 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:17,025 INFO L93 Difference]: Finished difference Result 4429 states and 5309 transitions. [2021-11-23 12:32:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:32:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 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 105 [2021-11-23 12:32:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:17,042 INFO L225 Difference]: With dead ends: 4429 [2021-11-23 12:32:17,043 INFO L226 Difference]: Without dead ends: 2513 [2021-11-23 12:32:17,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:32:17,047 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 191 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:17,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 1840 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 12:32:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2021-11-23 12:32:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2465. [2021-11-23 12:32:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2464 states have (on average 1.19237012987013) internal successors, (2938), 2464 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 2938 transitions. [2021-11-23 12:32:17,163 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 2938 transitions. Word has length 105 [2021-11-23 12:32:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:17,163 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 2938 transitions. [2021-11-23 12:32:17,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 2938 transitions. [2021-11-23 12:32:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 12:32:17,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:17,171 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:17,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:32:17,171 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:17,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash -486848861, now seen corresponding path program 1 times [2021-11-23 12:32:17,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010383512] [2021-11-23 12:32:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:17,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:37,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010383512] [2021-11-23 12:32:37,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010383512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:32:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859587908] [2021-11-23 12:32:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:37,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:32:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:32:37,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:32:37,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168c08ee-1be1-466b-ae80-332f315ce0fa/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:32:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:37,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-23 12:32:37,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:37,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-11-23 12:32:37,730 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-23 12:32:37,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 56 [2021-11-23 12:32:38,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:38,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:38,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:38,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:39,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-23 12:32:39,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:39,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:40,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 25 [2021-11-23 12:32:40,707 INFO L354 Elim1Store]: treesize reduction 119, result has 15.6 percent of original size [2021-11-23 12:32:40,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 41 [2021-11-23 12:32:41,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-11-23 12:32:50,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:32:57,737 INFO L244 Elim1Store]: Index analysis took 7268 ms