./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg --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 da786641c6f5791cd76909be3af2b92112e50156e91d6775689240586eed4e85 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:36:32,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:36:32,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:36:32,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:36:32,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:36:32,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:36:32,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:36:32,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:36:32,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:36:33,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:36:33,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:36:33,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:36:33,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:36:33,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:36:33,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:36:33,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:36:33,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:36:33,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:36:33,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:36:33,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:36:33,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:36:33,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:36:33,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:36:33,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:36:33,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:36:33,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:36:33,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:36:33,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:36:33,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:36:33,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:36:33,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:36:33,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:36:33,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:36:33,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:36:33,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:36:33,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:36:33,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:36:33,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:36:33,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:36:33,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:36:33,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:36:33,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:36:33,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:36:33,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:36:33,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:36:33,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:36:33,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:36:33,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:36:33,112 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:36:33,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:36:33,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:36:33,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:36:33,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:36:33,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:36:33,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:36:33,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:36:33,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:36:33,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:36:33,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:36:33,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:36:33,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:36:33,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:36:33,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:36:33,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:36:33,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:36:33,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:36:33,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:36:33,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:36:33,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:36:33,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:36:33,119 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:36:33,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:36:33,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:36:33,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:36:33,120 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_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da786641c6f5791cd76909be3af2b92112e50156e91d6775689240586eed4e85 [2021-10-28 08:36:33,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:36:33,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:36:33,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:36:33,428 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:36:33,429 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:36:33,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2021-10-28 08:36:33,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/data/80f84f1f2/fb7b2e6dc6194f7fb1b0d3b198026b5c/FLAG461d007fd [2021-10-28 08:36:34,094 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:36:34,094 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c [2021-10-28 08:36:34,112 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/data/80f84f1f2/fb7b2e6dc6194f7fb1b0d3b198026b5c/FLAG461d007fd [2021-10-28 08:36:34,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/data/80f84f1f2/fb7b2e6dc6194f7fb1b0d3b198026b5c [2021-10-28 08:36:34,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:36:34,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:36:34,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:36:34,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:36:34,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:36:34,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@587a6aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34, skipping insertion in model container [2021-10-28 08:36:34,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:36:34,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:36:34,699 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2021-10-28 08:36:34,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:36:34,723 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:36:34,785 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/sv-benchmarks/c/product-lines/minepump_spec4_product44.cil.c[15806,15819] [2021-10-28 08:36:34,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:36:34,813 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:36:34,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34 WrapperNode [2021-10-28 08:36:34,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:36:34,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:36:34,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:36:34,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:36:34,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:36:34,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:36:34,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:36:34,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:36:34,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:36:34,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:36:34,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:36:34,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:36:34,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (1/1) ... [2021-10-28 08:36:34,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:36:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:36:34,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:36:34,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:36:35,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:36:35,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:36:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:36:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:36:35,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:36:35,960 INFO L299 CfgBuilder]: Removed 120 assume(true) statements. [2021-10-28 08:36:35,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:36:35 BoogieIcfgContainer [2021-10-28 08:36:35,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:36:35,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:36:35,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:36:35,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:36:35,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:36:34" (1/3) ... [2021-10-28 08:36:35,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd863e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:36:35, skipping insertion in model container [2021-10-28 08:36:35,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:36:34" (2/3) ... [2021-10-28 08:36:35,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd863e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:36:35, skipping insertion in model container [2021-10-28 08:36:35,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:36:35" (3/3) ... [2021-10-28 08:36:35,971 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product44.cil.c [2021-10-28 08:36:35,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:36:35,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 08:36:36,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:36:36,037 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:36:36,038 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 08:36:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 08:36:36,061 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:36,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:36,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:36,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1782116946, now seen corresponding path program 1 times [2021-10-28 08:36:36,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:36,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144829857] [2021-10-28 08:36:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:36,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:36,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:36,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144829857] [2021-10-28 08:36:36,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144829857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:36,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:36,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:36:36,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237753210] [2021-10-28 08:36:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:36:36,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:36,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:36:36,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:36:36,407 INFO L87 Difference]: Start difference. First operand has 89 states, 85 states have (on average 1.5529411764705883) internal successors, (132), 88 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:36,433 INFO L93 Difference]: Finished difference Result 172 states and 257 transitions. [2021-10-28 08:36:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:36:36,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 08:36:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:36,444 INFO L225 Difference]: With dead ends: 172 [2021-10-28 08:36:36,444 INFO L226 Difference]: Without dead ends: 85 [2021-10-28 08:36:36,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:36:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-28 08:36:36,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-28 08:36:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 84 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2021-10-28 08:36:36,488 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 16 [2021-10-28 08:36:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:36,489 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2021-10-28 08:36:36,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2021-10-28 08:36:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 08:36:36,490 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:36,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:36,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:36:36,491 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:36,492 INFO L85 PathProgramCache]: Analyzing trace with hash 735360049, now seen corresponding path program 1 times [2021-10-28 08:36:36,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:36,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367065130] [2021-10-28 08:36:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:36,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:36,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:36,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:36,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367065130] [2021-10-28 08:36:36,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367065130] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:36,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:36,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:36:36,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266174472] [2021-10-28 08:36:36,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:36:36,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:36:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:36,642 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:36,662 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2021-10-28 08:36:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:36:36,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 08:36:36,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:36,665 INFO L225 Difference]: With dead ends: 85 [2021-10-28 08:36:36,666 INFO L226 Difference]: Without dead ends: 39 [2021-10-28 08:36:36,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-28 08:36:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-28 08:36:36,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-10-28 08:36:36,681 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 17 [2021-10-28 08:36:36,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:36,681 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-10-28 08:36:36,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,682 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-10-28 08:36:36,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 08:36:36,685 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:36,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:36,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:36:36,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:36,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:36,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1297648259, now seen corresponding path program 1 times [2021-10-28 08:36:36,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:36,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410028908] [2021-10-28 08:36:36,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:36,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:36,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:36,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410028908] [2021-10-28 08:36:36,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410028908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:36,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:36,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:36:36,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448877618] [2021-10-28 08:36:36,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:36:36,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:36,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:36:36,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:36,835 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:36,893 INFO L93 Difference]: Finished difference Result 105 states and 153 transitions. [2021-10-28 08:36:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:36:36,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-10-28 08:36:36,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:36,899 INFO L225 Difference]: With dead ends: 105 [2021-10-28 08:36:36,900 INFO L226 Difference]: Without dead ends: 72 [2021-10-28 08:36:36,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-28 08:36:36,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-10-28 08:36:36,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 99 transitions. [2021-10-28 08:36:36,919 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 99 transitions. Word has length 22 [2021-10-28 08:36:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:36,919 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 99 transitions. [2021-10-28 08:36:36,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 99 transitions. [2021-10-28 08:36:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 08:36:36,921 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:36,921 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:36,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:36:36,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash -372126526, now seen corresponding path program 1 times [2021-10-28 08:36:36,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:36,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876413686] [2021-10-28 08:36:36,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:36,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:37,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:37,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876413686] [2021-10-28 08:36:37,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876413686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:37,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:37,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:36:37,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185238947] [2021-10-28 08:36:37,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:36:37,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:37,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:36:37,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:37,046 INFO L87 Difference]: Start difference. First operand 68 states and 99 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:37,080 INFO L93 Difference]: Finished difference Result 171 states and 254 transitions. [2021-10-28 08:36:37,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:36:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-10-28 08:36:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:37,082 INFO L225 Difference]: With dead ends: 171 [2021-10-28 08:36:37,082 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 08:36:37,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:36:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 08:36:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2021-10-28 08:36:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 106 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2021-10-28 08:36:37,095 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 23 [2021-10-28 08:36:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:37,095 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2021-10-28 08:36:37,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,096 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2021-10-28 08:36:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 08:36:37,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:37,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:37,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:36:37,098 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1852423790, now seen corresponding path program 1 times [2021-10-28 08:36:37,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:37,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61760154] [2021-10-28 08:36:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:37,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:37,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:37,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61760154] [2021-10-28 08:36:37,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61760154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:37,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:37,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:36:37,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419398401] [2021-10-28 08:36:37,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:36:37,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:36:37,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:36:37,220 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:37,357 INFO L93 Difference]: Finished difference Result 399 states and 585 transitions. [2021-10-28 08:36:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:36:37,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-28 08:36:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:37,361 INFO L225 Difference]: With dead ends: 399 [2021-10-28 08:36:37,365 INFO L226 Difference]: Without dead ends: 298 [2021-10-28 08:36:37,366 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:36:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-28 08:36:37,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 194. [2021-10-28 08:36:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4093264248704662) internal successors, (272), 193 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2021-10-28 08:36:37,400 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 25 [2021-10-28 08:36:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:37,400 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2021-10-28 08:36:37,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2021-10-28 08:36:37,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 08:36:37,406 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:37,407 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:37,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:36:37,407 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:37,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:37,408 INFO L85 PathProgramCache]: Analyzing trace with hash 483234516, now seen corresponding path program 1 times [2021-10-28 08:36:37,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:37,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683863910] [2021-10-28 08:36:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:37,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:37,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:37,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683863910] [2021-10-28 08:36:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683863910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:37,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:37,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:36:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810282172] [2021-10-28 08:36:37,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:36:37,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:37,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:36:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:36:37,486 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:37,590 INFO L93 Difference]: Finished difference Result 398 states and 570 transitions. [2021-10-28 08:36:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:36:37,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-28 08:36:37,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:37,600 INFO L225 Difference]: With dead ends: 398 [2021-10-28 08:36:37,600 INFO L226 Difference]: Without dead ends: 396 [2021-10-28 08:36:37,601 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:36:37,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-28 08:36:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 194. [2021-10-28 08:36:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.3989637305699483) internal successors, (270), 193 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 270 transitions. [2021-10-28 08:36:37,647 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 270 transitions. Word has length 26 [2021-10-28 08:36:37,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:37,647 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 270 transitions. [2021-10-28 08:36:37,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 270 transitions. [2021-10-28 08:36:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:36:37,651 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:37,652 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:37,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:36:37,652 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1957615203, now seen corresponding path program 1 times [2021-10-28 08:36:37,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:37,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090626599] [2021-10-28 08:36:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:37,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:37,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:37,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090626599] [2021-10-28 08:36:37,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090626599] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:37,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:37,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:36:37,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892136886] [2021-10-28 08:36:37,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:36:37,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:37,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:36:37,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:36:37,724 INFO L87 Difference]: Start difference. First operand 194 states and 270 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:37,855 INFO L93 Difference]: Finished difference Result 392 states and 557 transitions. [2021-10-28 08:36:37,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:36:37,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-28 08:36:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:37,857 INFO L225 Difference]: With dead ends: 392 [2021-10-28 08:36:37,857 INFO L226 Difference]: Without dead ends: 291 [2021-10-28 08:36:37,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:36:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-28 08:36:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2021-10-28 08:36:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3951048951048952) internal successors, (399), 286 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 399 transitions. [2021-10-28 08:36:37,912 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 399 transitions. Word has length 33 [2021-10-28 08:36:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:37,912 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 399 transitions. [2021-10-28 08:36:37,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 399 transitions. [2021-10-28 08:36:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:36:37,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:37,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:37,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:36:37,914 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:37,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1057488415, now seen corresponding path program 1 times [2021-10-28 08:36:37,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:37,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678339184] [2021-10-28 08:36:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:37,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:37,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:37,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678339184] [2021-10-28 08:36:37,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678339184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:37,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:37,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 08:36:37,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077198957] [2021-10-28 08:36:37,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:36:37,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:36:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:36:37,967 INFO L87 Difference]: Start difference. First operand 287 states and 399 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:38,032 INFO L93 Difference]: Finished difference Result 818 states and 1157 transitions. [2021-10-28 08:36:38,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 08:36:38,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-28 08:36:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:38,037 INFO L225 Difference]: With dead ends: 818 [2021-10-28 08:36:38,037 INFO L226 Difference]: Without dead ends: 622 [2021-10-28 08:36:38,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:36:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-28 08:36:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 287. [2021-10-28 08:36:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3881118881118881) internal successors, (397), 286 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2021-10-28 08:36:38,073 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 33 [2021-10-28 08:36:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:38,075 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2021-10-28 08:36:38,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2021-10-28 08:36:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 08:36:38,076 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:38,076 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:38,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:36:38,077 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 470682401, now seen corresponding path program 1 times [2021-10-28 08:36:38,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:38,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939403811] [2021-10-28 08:36:38,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:38,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:38,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:38,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939403811] [2021-10-28 08:36:38,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939403811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:38,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:38,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:36:38,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636887231] [2021-10-28 08:36:38,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:36:38,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:36:38,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:36:38,159 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:38,325 INFO L93 Difference]: Finished difference Result 609 states and 854 transitions. [2021-10-28 08:36:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:36:38,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-10-28 08:36:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:38,329 INFO L225 Difference]: With dead ends: 609 [2021-10-28 08:36:38,330 INFO L226 Difference]: Without dead ends: 413 [2021-10-28 08:36:38,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:36:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-10-28 08:36:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 318. [2021-10-28 08:36:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.3974763406940063) internal successors, (443), 317 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 443 transitions. [2021-10-28 08:36:38,373 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 443 transitions. Word has length 33 [2021-10-28 08:36:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:38,374 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 443 transitions. [2021-10-28 08:36:38,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 443 transitions. [2021-10-28 08:36:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 08:36:38,378 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:38,378 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:38,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:36:38,379 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:38,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:38,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1538071243, now seen corresponding path program 1 times [2021-10-28 08:36:38,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:38,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114353107] [2021-10-28 08:36:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:38,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:36:38,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:38,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114353107] [2021-10-28 08:36:38,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114353107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:38,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:38,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:36:38,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251746230] [2021-10-28 08:36:38,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:36:38,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:38,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:36:38,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:36:38,472 INFO L87 Difference]: Start difference. First operand 318 states and 443 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:38,559 INFO L93 Difference]: Finished difference Result 902 states and 1251 transitions. [2021-10-28 08:36:38,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:36:38,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 08:36:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:38,563 INFO L225 Difference]: With dead ends: 902 [2021-10-28 08:36:38,563 INFO L226 Difference]: Without dead ends: 590 [2021-10-28 08:36:38,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:36:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-28 08:36:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 330. [2021-10-28 08:36:38,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.3829787234042554) internal successors, (455), 329 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 455 transitions. [2021-10-28 08:36:38,613 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 455 transitions. Word has length 47 [2021-10-28 08:36:38,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:38,613 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 455 transitions. [2021-10-28 08:36:38,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 455 transitions. [2021-10-28 08:36:38,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 08:36:38,615 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:38,615 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:38,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:36:38,616 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:38,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:38,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2047544333, now seen corresponding path program 1 times [2021-10-28 08:36:38,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:38,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352448828] [2021-10-28 08:36:38,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:38,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:36:38,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:38,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352448828] [2021-10-28 08:36:38,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352448828] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:36:38,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:36:38,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:36:38,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761449067] [2021-10-28 08:36:38,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:36:38,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:38,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:36:38,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 08:36:38,688 INFO L87 Difference]: Start difference. First operand 330 states and 455 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:38,805 INFO L93 Difference]: Finished difference Result 714 states and 974 transitions. [2021-10-28 08:36:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 08:36:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 08:36:38,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:38,809 INFO L225 Difference]: With dead ends: 714 [2021-10-28 08:36:38,809 INFO L226 Difference]: Without dead ends: 390 [2021-10-28 08:36:38,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 08:36:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-28 08:36:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 261. [2021-10-28 08:36:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.35) internal successors, (351), 260 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-10-28 08:36:38,843 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 47 [2021-10-28 08:36:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:38,843 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-10-28 08:36:38,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:38,844 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2021-10-28 08:36:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 08:36:38,845 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:38,845 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:38,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 08:36:38,845 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1853071629, now seen corresponding path program 1 times [2021-10-28 08:36:38,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:38,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210818878] [2021-10-28 08:36:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:38,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:38,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:36:38,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210818878] [2021-10-28 08:36:38,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210818878] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:36:38,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056389727] [2021-10-28 08:36:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:38,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:36:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:36:38,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:36:38,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 08:36:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:36:39,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:36:39,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:36:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:36:39,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056389727] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:36:39,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:36:39,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-28 08:36:39,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797869335] [2021-10-28 08:36:39,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 08:36:39,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:36:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:36:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:36:39,319 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:36:39,567 INFO L93 Difference]: Finished difference Result 735 states and 1011 transitions. [2021-10-28 08:36:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:36:39,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-10-28 08:36:39,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:36:39,571 INFO L225 Difference]: With dead ends: 735 [2021-10-28 08:36:39,571 INFO L226 Difference]: Without dead ends: 534 [2021-10-28 08:36:39,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-28 08:36:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-10-28 08:36:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 321. [2021-10-28 08:36:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.353125) internal successors, (433), 320 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 433 transitions. [2021-10-28 08:36:39,609 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 433 transitions. Word has length 48 [2021-10-28 08:36:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:36:39,609 INFO L470 AbstractCegarLoop]: Abstraction has 321 states and 433 transitions. [2021-10-28 08:36:39,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:36:39,609 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 433 transitions. [2021-10-28 08:36:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 08:36:39,610 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:36:39,610 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:39,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:36:39,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 08:36:39,824 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:36:39,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:36:39,825 INFO L85 PathProgramCache]: Analyzing trace with hash 82160865, now seen corresponding path program 2 times [2021-10-28 08:36:39,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:36:39,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331074436] [2021-10-28 08:36:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:36:39,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:36:39,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:36:39,900 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:36:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:36:40,034 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:36:40,034 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:36:40,035 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:36:40,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:36:40,037 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:36:40,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 08:36:40,040 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:36:40,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:36:40,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:36:40 BoogieIcfgContainer [2021-10-28 08:36:40,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:36:40,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:36:40,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:36:40,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:36:40,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:36:35" (3/4) ... [2021-10-28 08:36:40,222 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:36:40,347 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:36:40,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:36:40,349 INFO L168 Benchmark]: Toolchain (without parser) took 6004.28 ms. Allocated memory was 102.8 MB in the beginning and 155.2 MB in the end (delta: 52.4 MB). Free memory was 59.8 MB in the beginning and 109.8 MB in the end (delta: -50.0 MB). Peak memory consumption was 75.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,349 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:36:40,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.75 ms. Allocated memory is still 102.8 MB. Free memory was 59.6 MB in the beginning and 68.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.14 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 65.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,350 INFO L168 Benchmark]: Boogie Preprocessor took 40.50 ms. Allocated memory is still 102.8 MB. Free memory was 65.4 MB in the beginning and 63.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,351 INFO L168 Benchmark]: RCFGBuilder took 1042.16 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 87.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,351 INFO L168 Benchmark]: TraceAbstraction took 4256.34 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 86.7 MB in the beginning and 50.2 MB in the end (delta: 36.5 MB). Peak memory consumption was 67.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,352 INFO L168 Benchmark]: Witness Printer took 127.50 ms. Allocated memory is still 155.2 MB. Free memory was 50.2 MB in the beginning and 109.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:36:40,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 102.8 MB. Free memory is still 76.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 468.75 ms. Allocated memory is still 102.8 MB. Free memory was 59.6 MB in the beginning and 68.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.14 ms. Allocated memory is still 102.8 MB. Free memory was 68.6 MB in the beginning and 65.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.50 ms. Allocated memory is still 102.8 MB. Free memory was 65.4 MB in the beginning and 63.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1042.16 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 87.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4256.34 ms. Allocated memory was 123.7 MB in the beginning and 155.2 MB in the end (delta: 31.5 MB). Free memory was 86.7 MB in the beginning and 50.2 MB in the end (delta: 36.5 MB). Peak memory consumption was 67.6 MB. Max. memory is 16.1 GB. * Witness Printer took 127.50 ms. Allocated memory is still 155.2 MB. Free memory was 50.2 MB in the beginning and 109.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 762]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L248] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L565] int pumpRunning = 0; [L566] int systemActive = 1; [L767] int cleanupTimeShifts = 4; [L863] int waterLevel = 1; [L864] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L840] int retValue_acc ; [L841] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L474] int retValue_acc ; [L477] retValue_acc = 1 [L478] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L847] tmp = valid_product() [L849] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L490] int splverifierCounter ; [L491] int tmp ; [L492] int tmp___0 ; [L493] int tmp___1 ; [L494] int tmp___2 ; [L497] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L507] tmp = __VERIFIER_nondet_int() [L509] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L881] COND TRUE waterLevel < 2 [L882] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND TRUE \read(tmp___2) [L753] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L572] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L579] COND TRUE \read(systemActive) [L601] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE ! pumpRunning [L716] int retValue_acc ; [L717] int tmp ; [L718] int tmp___0 ; [L943] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L946] COND FALSE !(waterLevel < 2) [L950] retValue_acc = 0 [L951] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L722] tmp = isHighWaterSensorDry() [L724] COND FALSE !(\read(tmp)) [L727] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L729] retValue_acc = tmp___0 [L730] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] tmp = isHighWaterLevel() [L608] COND TRUE \read(tmp) [L635] int tmp ; [L660] int retValue_acc ; [L902] int retValue_acc ; [L905] retValue_acc = methaneLevelCritical [L906] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L664] retValue_acc = isMethaneLevelCritical() [L666] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L639] tmp = isMethaneAlarm() [L641] COND FALSE !(\read(tmp)) [L629] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L54] int tmp ; [L55] int tmp___0 ; [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND TRUE \read(tmp___2) [L753] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L572] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L579] COND TRUE \read(systemActive) [L601] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L604] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L54] int tmp ; [L55] int tmp___0 ; [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L499] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L501] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L507] tmp = __VERIFIER_nondet_int() [L509] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L517] tmp___0 = __VERIFIER_nondet_int() [L519] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L527] tmp___2 = __VERIFIER_nondet_int() [L529] COND TRUE \read(tmp___2) [L753] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L572] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L869] COND TRUE waterLevel > 0 [L870] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L579] COND TRUE \read(systemActive) [L601] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L604] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L54] int tmp ; [L55] int tmp___0 ; [L934] int retValue_acc ; [L937] retValue_acc = waterLevel [L938] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L762] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 762]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 89 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1093 SDtfs, 1278 SDslu, 1594 SDs, 0 SdLazy, 237 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=10, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 1348 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 481 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 3 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:36:40,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14b5bd23-569e-4613-af44-28930b0d66cb/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...