./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res1o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res1o.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN --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 64693615f2d98484fbf4ccec390e9fe8d95f9d4648b0c6cc4a2e86f0656bfacf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:22:59,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:22:59,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:22:59,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:22:59,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:22:59,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:22:59,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:22:59,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:22:59,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:22:59,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:22:59,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:22:59,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:22:59,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:22:59,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:22:59,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:22:59,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:22:59,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:22:59,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:22:59,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:22:59,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:22:59,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:22:59,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:22:59,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:22:59,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:22:59,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:22:59,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:22:59,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:22:59,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:22:59,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:22:59,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:22:59,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:22:59,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:22:59,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:22:59,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:22:59,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:22:59,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:22:59,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:22:59,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:22:59,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:22:59,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:22:59,135 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:22:59,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:22:59,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:22:59,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:22:59,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:22:59,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:22:59,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:22:59,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:22:59,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:22:59,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:22:59,190 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:22:59,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:22:59,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:22:59,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:22:59,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:22:59,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:22:59,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:22:59,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:22:59,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:22:59,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:22:59,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:22:59,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:22:59,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:22:59,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:22:59,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:22:59,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:22:59,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:22:59,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:22:59,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:22:59,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:22:59,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:22:59,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:22:59,197 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:22:59,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:22:59,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:22:59,198 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_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64693615f2d98484fbf4ccec390e9fe8d95f9d4648b0c6cc4a2e86f0656bfacf [2022-11-20 12:22:59,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:22:59,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:22:59,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:22:59,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:22:59,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:22:59,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/res1o.c [2022-11-20 12:23:02,909 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:23:03,118 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:23:03,119 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/sv-benchmarks/c/array-fpi/res1o.c [2022-11-20 12:23:03,127 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/data/f3a897490/f4e2a008d149495298f321e962b51dc7/FLAG902ad2486 [2022-11-20 12:23:03,152 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/data/f3a897490/f4e2a008d149495298f321e962b51dc7 [2022-11-20 12:23:03,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:23:03,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:23:03,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:23:03,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:23:03,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:23:03,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b13129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03, skipping insertion in model container [2022-11-20 12:23:03,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:23:03,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:23:03,498 WARN L237 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_e14ca547-46dc-4ffc-91e5-3186b61b869d/sv-benchmarks/c/array-fpi/res1o.c[588,601] [2022-11-20 12:23:03,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:03,558 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:23:03,579 WARN L237 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_e14ca547-46dc-4ffc-91e5-3186b61b869d/sv-benchmarks/c/array-fpi/res1o.c[588,601] [2022-11-20 12:23:03,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:23:03,619 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:23:03,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03 WrapperNode [2022-11-20 12:23:03,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:23:03,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:23:03,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:23:03,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:23:03,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,672 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2022-11-20 12:23:03,673 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:23:03,674 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:23:03,674 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:23:03,674 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:23:03,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,727 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:23:03,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:23:03,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:23:03,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:23:03,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (1/1) ... [2022-11-20 12:23:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:23:03,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:03,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:23:03,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:23:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:23:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:23:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:23:03,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:23:03,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:23:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:23:03,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:23:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:23:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:23:03,950 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:23:03,952 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:23:04,258 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:23:04,265 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:23:04,279 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:23:04,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:23:04 BoogieIcfgContainer [2022-11-20 12:23:04,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:23:04,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:23:04,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:23:04,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:23:04,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:23:03" (1/3) ... [2022-11-20 12:23:04,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f630b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:23:04, skipping insertion in model container [2022-11-20 12:23:04,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:23:03" (2/3) ... [2022-11-20 12:23:04,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f630b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:23:04, skipping insertion in model container [2022-11-20 12:23:04,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:23:04" (3/3) ... [2022-11-20 12:23:04,296 INFO L112 eAbstractionObserver]: Analyzing ICFG res1o.c [2022-11-20 12:23:04,324 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:23:04,324 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:23:04,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:23:04,413 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@421543e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:23:04,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:23:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:04,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:23:04,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:04,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:04,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2022-11-20 12:23:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:04,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653907913] [2022-11-20 12:23:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:04,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:04,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653907913] [2022-11-20 12:23:04,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653907913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:04,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:04,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:23:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886065531] [2022-11-20 12:23:04,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:04,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:23:04,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:23:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:23:04,797 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:04,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:04,830 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-11-20 12:23:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:23:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:23:04,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:04,845 INFO L225 Difference]: With dead ends: 44 [2022-11-20 12:23:04,846 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 12:23:04,849 INFO L412 NwaCegarLoop]: 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 [2022-11-20 12:23:04,859 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:04,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:23:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 12:23:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 12:23:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2022-11-20 12:23:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-11-20 12:23:04,901 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2022-11-20 12:23:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:04,902 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-11-20 12:23:04,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-11-20 12:23:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:23:04,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:04,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:04,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:23:04,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2022-11-20 12:23:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749711556] [2022-11-20 12:23:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:05,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:05,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:05,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749711556] [2022-11-20 12:23:05,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749711556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:23:05,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:23:05,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:23:05,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172555793] [2022-11-20 12:23:05,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:23:05,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:23:05,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:05,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:23:05,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:05,269 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:05,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:05,365 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-11-20 12:23:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:23:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 12:23:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:05,367 INFO L225 Difference]: With dead ends: 41 [2022-11-20 12:23:05,367 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 12:23:05,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:23:05,369 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:05,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 12 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:23:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 12:23:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2022-11-20 12:23:05,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:05,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-20 12:23:05,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2022-11-20 12:23:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:05,378 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-20 12:23:05,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-20 12:23:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:23:05,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:05,380 INFO L195 NwaCegarLoop]: 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] [2022-11-20 12:23:05,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:23:05,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:05,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2022-11-20 12:23:05,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:05,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656554635] [2022-11-20 12:23:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656554635] [2022-11-20 12:23:07,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656554635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:07,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758142502] [2022-11-20 12:23:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:07,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:07,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:07,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:07,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:23:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:07,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 12:23:07,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:07,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:23:07,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:23:07,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-20 12:23:07,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-20 12:23:08,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:08,190 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:23:08,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-20 12:23:08,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:08,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 26 [2022-11-20 12:23:08,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:08,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2022-11-20 12:23:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:08,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:14,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:14,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:15,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758142502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:15,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:15,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-20 12:23:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685833913] [2022-11-20 12:23:15,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:15,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:23:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:15,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:23:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=804, Unknown=2, NotChecked=0, Total=992 [2022-11-20 12:23:15,117 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:16,307 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-20 12:23:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:23:16,308 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-20 12:23:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:16,309 INFO L225 Difference]: With dead ends: 49 [2022-11-20 12:23:16,309 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 12:23:16,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=333, Invalid=1387, Unknown=2, NotChecked=0, Total=1722 [2022-11-20 12:23:16,311 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:16,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 84 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 113 Invalid, 0 Unknown, 122 Unchecked, 0.2s Time] [2022-11-20 12:23:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 12:23:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-11-20 12:23:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-20 12:23:16,325 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2022-11-20 12:23:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:16,326 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-20 12:23:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.875) internal successors, (60), 32 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:16,326 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-20 12:23:16,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:23:16,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:16,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:16,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 12:23:16,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:16,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:16,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1774307726, now seen corresponding path program 2 times [2022-11-20 12:23:16,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:16,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966671513] [2022-11-20 12:23:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:16,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:23:16,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:16,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966671513] [2022-11-20 12:23:16,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966671513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:16,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944932408] [2022-11-20 12:23:16,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:23:16,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:16,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:16,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:16,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:23:16,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:23:16,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:16,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:23:16,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:23:16,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:23:17,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944932408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:17,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:17,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 12:23:17,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805732878] [2022-11-20 12:23:17,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:23:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:23:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:23:17,026 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:17,287 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2022-11-20 12:23:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:23:17,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-20 12:23:17,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:17,292 INFO L225 Difference]: With dead ends: 80 [2022-11-20 12:23:17,292 INFO L226 Difference]: Without dead ends: 48 [2022-11-20 12:23:17,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:23:17,294 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 69 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:17,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 32 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:23:17,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-20 12:23:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-11-20 12:23:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-11-20 12:23:17,305 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2022-11-20 12:23:17,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:17,306 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-11-20 12:23:17,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-11-20 12:23:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 12:23:17,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:17,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:17,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:17,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 12:23:17,515 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:17,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1964080588, now seen corresponding path program 3 times [2022-11-20 12:23:17,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:17,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256249627] [2022-11-20 12:23:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:17,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:23:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256249627] [2022-11-20 12:23:17,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256249627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347845187] [2022-11-20 12:23:17,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:23:17,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:17,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:17,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:17,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:23:17,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:23:17,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:17,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:23:17,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:23:17,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:23:18,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347845187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:18,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:18,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-11-20 12:23:18,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364894021] [2022-11-20 12:23:18,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:23:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:23:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:23:18,004 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:18,211 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-11-20 12:23:18,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:23:18,213 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-20 12:23:18,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:18,214 INFO L225 Difference]: With dead ends: 43 [2022-11-20 12:23:18,214 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 12:23:18,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:23:18,216 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:18,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 25 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:23:18,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 12:23:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-11-20 12:23:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:18,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2022-11-20 12:23:18,233 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2022-11-20 12:23:18,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:18,234 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2022-11-20 12:23:18,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:18,234 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2022-11-20 12:23:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 12:23:18,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:18,238 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:18,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:23:18,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:18,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash 666081912, now seen corresponding path program 4 times [2022-11-20 12:23:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:18,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966107620] [2022-11-20 12:23:18,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:18,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:21,305 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:21,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:21,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966107620] [2022-11-20 12:23:21,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966107620] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:21,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327846054] [2022-11-20 12:23:21,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:23:21,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:21,311 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:21,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:23:21,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:23:21,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:21,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-20 12:23:21,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:21,476 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:23:21,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-20 12:23:21,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:23:21,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:23:21,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 12:23:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:22,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:22,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 42 [2022-11-20 12:23:22,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:22,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-20 12:23:23,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2022-11-20 12:23:23,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:23,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 52 [2022-11-20 12:23:24,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:24,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:24,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2022-11-20 12:23:24,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2022-11-20 12:23:24,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2022-11-20 12:23:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:24,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:34,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327846054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:34,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:34,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 62 [2022-11-20 12:23:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862411015] [2022-11-20 12:23:34,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-20 12:23:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-20 12:23:34,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3278, Unknown=1, NotChecked=0, Total=3782 [2022-11-20 12:23:34,740 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:47,476 INFO L93 Difference]: Finished difference Result 84 states and 96 transitions. [2022-11-20 12:23:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 12:23:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 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 31 [2022-11-20 12:23:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:47,480 INFO L225 Difference]: With dead ends: 84 [2022-11-20 12:23:47,480 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 12:23:47,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=990, Invalid=6662, Unknown=4, NotChecked=0, Total=7656 [2022-11-20 12:23:47,484 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 406 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:47,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 111 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 406 Unchecked, 0.3s Time] [2022-11-20 12:23:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 12:23:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2022-11-20 12:23:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 66 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2022-11-20 12:23:47,507 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 31 [2022-11-20 12:23:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:47,508 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2022-11-20 12:23:47,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2022-11-20 12:23:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 12:23:47,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:47,510 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:47,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:47,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:47,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash 207824378, now seen corresponding path program 5 times [2022-11-20 12:23:47,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:47,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091020625] [2022-11-20 12:23:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:47,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:23:47,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:47,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091020625] [2022-11-20 12:23:47,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091020625] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:47,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452386475] [2022-11-20 12:23:47,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:23:47,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:47,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:47,882 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:47,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:23:48,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-20 12:23:48,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:23:48,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:23:48,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:23:48,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452386475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:48,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:48,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-20 12:23:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17448350] [2022-11-20 12:23:48,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:48,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:23:48,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:23:48,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:23:48,275 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:48,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:48,599 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2022-11-20 12:23:48,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:23:48,600 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 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 [2022-11-20 12:23:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:48,601 INFO L225 Difference]: With dead ends: 129 [2022-11-20 12:23:48,601 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 12:23:48,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:23:48,602 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 76 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:48,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 35 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:23:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 12:23:48,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2022-11-20 12:23:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2022-11-20 12:23:48,621 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 33 [2022-11-20 12:23:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:48,622 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2022-11-20 12:23:48,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2022-11-20 12:23:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:23:48,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:48,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:48,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:48,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:23:48,831 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash 236928956, now seen corresponding path program 6 times [2022-11-20 12:23:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:48,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097165232] [2022-11-20 12:23:48,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:23:49,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097165232] [2022-11-20 12:23:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097165232] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354085067] [2022-11-20 12:23:49,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:23:49,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:49,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:49,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:23:49,145 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 12:23:49,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:23:49,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:23:49,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:23:49,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:23:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:23:49,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354085067] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:23:49,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:23:49,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-11-20 12:23:49,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158986047] [2022-11-20 12:23:49,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:23:49,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 12:23:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:23:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 12:23:49,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:23:49,372 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:23:49,695 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-20 12:23:49,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:23:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-20 12:23:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:23:49,697 INFO L225 Difference]: With dead ends: 69 [2022-11-20 12:23:49,697 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 12:23:49,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:23:49,698 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:23:49,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 28 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:23:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 12:23:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2022-11-20 12:23:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:49,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-11-20 12:23:49,717 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 35 [2022-11-20 12:23:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:23:49,719 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-11-20 12:23:49,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:23:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-11-20 12:23:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 12:23:49,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:23:49,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:23:49,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:23:49,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:49,940 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:23:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:23:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash 315843584, now seen corresponding path program 7 times [2022-11-20 12:23:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:23:49,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673963856] [2022-11-20 12:23:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:23:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:23:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:23:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:23:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673963856] [2022-11-20 12:23:55,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673963856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:23:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914661793] [2022-11-20 12:23:55,515 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:23:55,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:23:55,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:23:55,516 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:23:55,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:23:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:23:55,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-20 12:23:55,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:23:55,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:23:55,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:56,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:23:56,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:56,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 12:23:56,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:56,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:56,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-20 12:23:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,115 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-20 12:23:57,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:57,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2022-11-20 12:23:57,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:57,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 48 [2022-11-20 12:23:58,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:58,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:58,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:58,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:58,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:58,562 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:23:58,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-11-20 12:23:59,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:59,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:23:59,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:23:59,251 INFO L321 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-11-20 12:23:59,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 106 treesize of output 104 [2022-11-20 12:24:00,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,052 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:00,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:00,092 INFO L321 Elim1Store]: treesize reduction 64, result has 23.8 percent of original size [2022-11-20 12:24:00,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 101 treesize of output 103 [2022-11-20 12:24:00,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:00,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:00,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-11-20 12:24:01,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:01,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:01,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:01,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:01,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:24:01,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 59 [2022-11-20 12:24:01,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:01,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-11-20 12:24:01,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:01,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2022-11-20 12:24:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:01,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:42,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:42,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:42,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914661793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:42,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:25:42,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 27] total 82 [2022-11-20 12:25:42,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68275201] [2022-11-20 12:25:42,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:42,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-11-20 12:25:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-11-20 12:25:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=6070, Unknown=29, NotChecked=0, Total=6642 [2022-11-20 12:25:42,793 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 82 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 82 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:38,311 WARN L233 SmtUtils]: Spent 40.62s on a formula simplification. DAG size of input: 239 DAG size of output: 237 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:27:52,924 WARN L233 SmtUtils]: Spent 21.99s on a formula simplification that was a NOOP. DAG size: 209 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:27:55,722 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ (* c_~N~0 2) 1)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (and (forall ((v_ArrVal_445 Int) (v_ArrVal_434 Int) (v_ArrVal_444 Int) (v_ArrVal_442 Int) (v_ArrVal_440 Int) (v_ArrVal_437 Int) (v_ArrVal_447 Int) (v_ArrVal_435 Int)) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)))) (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_440) .cse8 v_ArrVal_442) .cse4 v_ArrVal_444))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_434 (+ (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (< (+ v_ArrVal_447 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_447)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_435 (+ v_ArrVal_434 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_434)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (not (<= v_ArrVal_445 (+ v_ArrVal_440 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_437 (+ v_ArrVal_435 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))) (not (<= v_ArrVal_440 1)) (not (<= v_ArrVal_444 1)) (not (<= v_ArrVal_442 1)) (not (<= v_ArrVal_447 (+ v_ArrVal_445 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_445)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))))))))) (or (forall ((v_ArrVal_434 Int) (v_ArrVal_445 Int) (v_ArrVal_444 Int) (v_ArrVal_432 Int) (v_ArrVal_442 Int) (v_ArrVal_440 Int) (v_ArrVal_437 Int) (v_ArrVal_447 Int) (v_ArrVal_435 Int)) (let ((.cse13 (store .cse1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) v_ArrVal_432))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse12 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse11 (let ((.cse15 (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)))) (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_440) .cse8 v_ArrVal_442) .cse4 v_ArrVal_444))))) (let ((.cse10 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_445 (+ v_ArrVal_440 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_447 (+ v_ArrVal_445 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_445)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))) (not (<= v_ArrVal_432 1)) (< (+ v_ArrVal_447 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_447)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse4)) .cse5) (not (<= v_ArrVal_434 (+ (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= v_ArrVal_435 (+ v_ArrVal_434 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_434)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6)))) (not (<= v_ArrVal_440 1)) (not (<= v_ArrVal_444 1)) (not (<= v_ArrVal_442 1)) (not (<= v_ArrVal_437 (+ v_ArrVal_435 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))))))))))) (not (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0))) (let ((.cse16 (<= (mod c_~N~0 4294967296) 536870911))) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse16) (and (not .cse16) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))))) is different from false [2022-11-20 12:27:58,444 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (+ (* c_~N~0 2) 1)) (.cse8 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (forall ((v_ArrVal_434 Int) (v_ArrVal_445 Int) (v_ArrVal_444 Int) (v_ArrVal_442 Int) (v_ArrVal_440 Int) (v_ArrVal_437 Int) (v_ArrVal_447 Int) (v_ArrVal_435 Int)) (let ((.cse3 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)))) (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_440) .cse8 v_ArrVal_442) .cse5 v_ArrVal_444))))) (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_434 (+ .cse0 (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (< (+ v_ArrVal_447 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_447)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)) .cse6) (not (<= v_ArrVal_435 (+ v_ArrVal_434 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_434)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (not (<= v_ArrVal_445 (+ v_ArrVal_440 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_440 1)) (not (<= v_ArrVal_444 1)) (not (<= v_ArrVal_437 (+ v_ArrVal_435 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse2 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= v_ArrVal_442 1)) (not (<= v_ArrVal_447 (+ v_ArrVal_445 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_445)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))))))) (forall ((v_ArrVal_445 Int) (v_ArrVal_434 Int) (v_ArrVal_444 Int) (v_ArrVal_442 Int) (v_ArrVal_440 Int) (v_ArrVal_437 Int) (v_ArrVal_447 Int) (v_ArrVal_435 Int)) (let ((.cse10 (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_437)))) (store .cse12 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| v_ArrVal_440) .cse8 v_ArrVal_442) .cse5 v_ArrVal_444))))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (not (<= v_ArrVal_434 (+ .cse0 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (< (+ v_ArrVal_447 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_447)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse5)) .cse6) (not (<= v_ArrVal_435 (+ v_ArrVal_434 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_434)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (not (<= v_ArrVal_445 (+ v_ArrVal_440 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (not (<= v_ArrVal_437 (+ v_ArrVal_435 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_435)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= v_ArrVal_440 1)) (not (<= v_ArrVal_444 1)) (not (<= v_ArrVal_442 1)) (not (<= v_ArrVal_447 (+ v_ArrVal_445 (select (select (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_445)) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8)))))))) (let ((.cse13 (<= (mod c_~N~0 4294967296) 536870911))) (or (and (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse13) (and (not .cse13) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))))) is different from false [2022-11-20 12:28:31,329 WARN L233 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 139 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:29:49,992 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:30:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:09,233 INFO L93 Difference]: Finished difference Result 143 states and 164 transitions. [2022-11-20 12:30:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-20 12:30:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 82 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-20 12:30:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:09,235 INFO L225 Difference]: With dead ends: 143 [2022-11-20 12:30:09,236 INFO L226 Difference]: Without dead ends: 136 [2022-11-20 12:30:09,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4763 ImplicationChecksByTransitivity, 366.8s TimeCoverageRelationStatistics Valid=1316, Invalid=14609, Unknown=85, NotChecked=502, Total=16512 [2022-11-20 12:30:09,241 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 173 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1168 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:09,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 159 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 532 Invalid, 0 Unknown, 1168 Unchecked, 1.0s Time] [2022-11-20 12:30:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-20 12:30:09,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 89. [2022-11-20 12:30:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 88 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2022-11-20 12:30:09,296 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 39 [2022-11-20 12:30:09,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:09,297 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2022-11-20 12:30:09,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 82 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2022-11-20 12:30:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:30:09,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:09,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:09,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 12:30:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:09,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1363759742, now seen corresponding path program 8 times [2022-11-20 12:30:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:09,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327362760] [2022-11-20 12:30:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:30:09,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327362760] [2022-11-20 12:30:09,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327362760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043391233] [2022-11-20 12:30:09,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:30:09,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:09,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:09,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:09,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:30:09,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:30:09,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:30:09,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:30:09,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:30:10,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:30:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:30:10,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043391233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:30:10,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:30:10,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-20 12:30:10,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720587094] [2022-11-20 12:30:10,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:30:10,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:30:10,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:10,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:30:10,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:30:10,262 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:10,723 INFO L93 Difference]: Finished difference Result 164 states and 185 transitions. [2022-11-20 12:30:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:30:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-20 12:30:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:10,725 INFO L225 Difference]: With dead ends: 164 [2022-11-20 12:30:10,725 INFO L226 Difference]: Without dead ends: 100 [2022-11-20 12:30:10,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:30:10,727 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 89 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:10,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 45 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:30:10,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-20 12:30:10,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2022-11-20 12:30:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.12987012987013) internal successors, (87), 77 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-20 12:30:10,756 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 41 [2022-11-20 12:30:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:10,757 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-20 12:30:10,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-20 12:30:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 12:30:10,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:10,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:10,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:30:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:30:10,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:10,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash -554920636, now seen corresponding path program 9 times [2022-11-20 12:30:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:10,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485198211] [2022-11-20 12:30:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:10,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:30:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:11,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485198211] [2022-11-20 12:30:11,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485198211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:11,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401801629] [2022-11-20 12:30:11,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:30:11,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:11,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:11,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:30:11,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 12:30:11,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:30:11,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:30:11,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:30:11,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:30:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 12:30:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401801629] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:30:11,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:30:11,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-20 12:30:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671966782] [2022-11-20 12:30:11,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:30:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:30:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:30:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:30:11,840 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:30:12,259 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2022-11-20 12:30:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:30:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-20 12:30:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:30:12,261 INFO L225 Difference]: With dead ends: 87 [2022-11-20 12:30:12,262 INFO L226 Difference]: Without dead ends: 67 [2022-11-20 12:30:12,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:30:12,263 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 80 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:30:12,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 25 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:30:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-20 12:30:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2022-11-20 12:30:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2022-11-20 12:30:12,286 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 43 [2022-11-20 12:30:12,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:30:12,287 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2022-11-20 12:30:12,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:30:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2022-11-20 12:30:12,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 12:30:12,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:30:12,289 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:30:12,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 12:30:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:12,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:30:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:30:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1719679608, now seen corresponding path program 10 times [2022-11-20 12:30:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:30:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644315687] [2022-11-20 12:30:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:30:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:30:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:18,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644315687] [2022-11-20 12:30:18,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644315687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:18,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964358559] [2022-11-20 12:30:18,723 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:30:18,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:18,724 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:18,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:30:18,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:30:18,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:30:18,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-20 12:30:18,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:19,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:30:19,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:30:19,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:30:19,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 12:30:19,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-11-20 12:30:19,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 67 [2022-11-20 12:30:20,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:20,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:20,776 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-20 12:30:20,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 86 [2022-11-20 12:30:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,221 INFO L321 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2022-11-20 12:30:21,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 98 [2022-11-20 12:30:21,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:21,687 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-20 12:30:21,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 104 [2022-11-20 12:30:22,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:22,185 INFO L321 Elim1Store]: treesize reduction 124, result has 0.8 percent of original size [2022-11-20 12:30:22,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 107 [2022-11-20 12:30:23,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:23,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,208 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:23,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:23,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:23,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:23,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:23,239 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-20 12:30:23,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 8 disjoint index pairs (out of 36 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 84 [2022-11-20 12:30:24,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:24,774 INFO L321 Elim1Store]: treesize reduction 458, result has 37.2 percent of original size [2022-11-20 12:30:24,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 39 case distinctions, treesize of input 198 treesize of output 362 [2022-11-20 12:30:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:29,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:30,068 INFO L321 Elim1Store]: treesize reduction 373, result has 32.2 percent of original size [2022-11-20 12:30:30,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 190 treesize of output 280 [2022-11-20 12:30:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:32,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:32,385 INFO L321 Elim1Store]: treesize reduction 346, result has 30.9 percent of original size [2022-11-20 12:30:32,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 7 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 169 treesize of output 247 [2022-11-20 12:30:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:33,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:33,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:33,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:33,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2022-11-20 12:30:34,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:34,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 66 [2022-11-20 12:30:34,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:30:34,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:34,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 67 [2022-11-20 12:30:35,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:35,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 60 [2022-11-20 12:30:35,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:30:35,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 24 [2022-11-20 12:30:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 12 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:30:35,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:32:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 63 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:32:44,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964358559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:32:44,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:32:44,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 39] total 112 [2022-11-20 12:32:44,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716505852] [2022-11-20 12:32:44,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:32:44,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-11-20 12:32:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:32:44,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-11-20 12:32:44,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1399, Invalid=11008, Unknown=25, NotChecked=0, Total=12432 [2022-11-20 12:32:44,909 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 112 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 112 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:33:25,015 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:33:56,877 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:35:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:31,020 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2022-11-20 12:35:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-20 12:35:31,021 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 112 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-20 12:35:31,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:31,022 INFO L225 Difference]: With dead ends: 106 [2022-11-20 12:35:31,022 INFO L226 Difference]: Without dead ends: 100 [2022-11-20 12:35:31,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8163 ImplicationChecksByTransitivity, 285.7s TimeCoverageRelationStatistics Valid=2489, Invalid=21012, Unknown=61, NotChecked=0, Total=23562 [2022-11-20 12:35:31,027 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 898 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:31,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 188 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 240 Invalid, 0 Unknown, 898 Unchecked, 0.5s Time] [2022-11-20 12:35:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-20 12:35:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2022-11-20 12:35:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 70 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-11-20 12:35:31,065 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 47 [2022-11-20 12:35:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:31,066 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-11-20 12:35:31,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 112 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-11-20 12:35:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:35:31,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:31,069 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:31,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:31,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:35:31,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:31,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:31,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1003539722, now seen corresponding path program 11 times [2022-11-20 12:35:31,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:31,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621691725] [2022-11-20 12:35:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:31,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:35:31,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:31,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621691725] [2022-11-20 12:35:31,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621691725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:31,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635460972] [2022-11-20 12:35:31,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:35:31,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:31,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:31,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:35:32,042 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-20 12:35:32,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:32,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:35:32,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:35:32,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 12:35:32,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635460972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:32,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:32,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-20 12:35:32,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462538832] [2022-11-20 12:35:32,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:32,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:35:32,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:32,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:35:32,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:35:32,484 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:33,013 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2022-11-20 12:35:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:35:33,014 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-20 12:35:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:33,015 INFO L225 Difference]: With dead ends: 146 [2022-11-20 12:35:33,015 INFO L226 Difference]: Without dead ends: 78 [2022-11-20 12:35:33,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 86 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:35:33,016 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:33,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 39 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:35:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-20 12:35:33,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2022-11-20 12:35:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2022-11-20 12:35:33,048 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 49 [2022-11-20 12:35:33,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:33,048 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2022-11-20 12:35:33,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:33,049 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2022-11-20 12:35:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:35:33,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:33,050 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:33,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:33,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:35:33,257 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1391362764, now seen corresponding path program 12 times [2022-11-20 12:35:33,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:33,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742100511] [2022-11-20 12:35:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:33,535 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:35:33,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:33,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742100511] [2022-11-20 12:35:33,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742100511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:33,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451249415] [2022-11-20 12:35:33,536 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:35:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:33,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:33,538 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:33,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:35:33,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-20 12:35:33,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:35:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:35:33,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 12:35:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451249415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:34,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:34,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-11-20 12:35:34,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070645841] [2022-11-20 12:35:34,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:35:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:34,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:35:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:35:34,164 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:34,795 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2022-11-20 12:35:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:35:34,795 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-20 12:35:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:34,796 INFO L225 Difference]: With dead ends: 73 [2022-11-20 12:35:34,796 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 12:35:34,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 87 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:35:34,797 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 89 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:34,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 42 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:35:34,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 12:35:34,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-11-20 12:35:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 55 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:34,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2022-11-20 12:35:34,835 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 51 [2022-11-20 12:35:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:34,836 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2022-11-20 12:35:34,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2022-11-20 12:35:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 12:35:34,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:34,837 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:34,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:35,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:35:35,043 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash -162480368, now seen corresponding path program 13 times [2022-11-20 12:35:35,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:35,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840781547] [2022-11-20 12:35:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:35,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:44,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:44,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840781547] [2022-11-20 12:35:44,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840781547] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:44,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917445680] [2022-11-20 12:35:44,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:35:44,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:44,675 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:44,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e14ca547-46dc-4ffc-91e5-3186b61b869d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:35:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:44,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-20 12:35:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:45,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-20 12:35:45,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:35:45,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:35:45,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-11-20 12:35:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:45,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:45,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-20 12:35:46,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 59 [2022-11-20 12:35:46,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:46,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-11-20 12:35:47,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:47,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:47,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:47,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:47,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:47,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 78 [2022-11-20 12:35:48,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:48,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 81 [2022-11-20 12:35:48,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:48,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:48,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 86 [2022-11-20 12:35:49,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:49,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:49,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 79 [2022-11-20 12:35:49,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 70 [2022-11-20 12:35:50,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:50,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:50,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:50,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:50,666 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:35:50,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 81 [2022-11-20 12:35:51,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:51,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:51,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:51,705 INFO L321 Elim1Store]: treesize reduction 104, result has 16.1 percent of original size [2022-11-20 12:35:51,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 41 case distinctions, treesize of input 158 treesize of output 152 [2022-11-20 12:35:52,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:52,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:52,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:53,048 INFO L321 Elim1Store]: treesize reduction 104, result has 16.1 percent of original size [2022-11-20 12:35:53,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 14 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 41 case distinctions, treesize of input 150 treesize of output 148 [2022-11-20 12:35:54,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,181 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:54,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:54,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:54,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:54,251 INFO L321 Elim1Store]: treesize reduction 104, result has 16.1 percent of original size [2022-11-20 12:35:54,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 41 case distinctions, treesize of input 147 treesize of output 149 [2022-11-20 12:35:55,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:55,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:55,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:55,330 INFO L321 Elim1Store]: treesize reduction 104, result has 16.1 percent of original size [2022-11-20 12:35:55,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 15 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 41 case distinctions, treesize of input 142 treesize of output 148 [2022-11-20 12:35:56,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 78 [2022-11-20 12:35:56,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:56,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:56,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 83 [2022-11-20 12:35:57,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:57,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:57,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 79 [2022-11-20 12:35:58,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:35:58,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 80 [2022-11-20 12:35:58,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:58,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 71 [2022-11-20 12:35:59,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:35:59,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 28 [2022-11-20 12:35:59,456 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:59,456 INFO L328 TraceCheckSpWp]: Computing backward predicates...