./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/dancing.i --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_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/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_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/dancing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/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_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/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 c2e0266b63b958a771d0226973905d5a39a7a28d05d194ae66381394d9ab520a --- 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 09:27:20,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:20,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:20,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:20,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:20,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:20,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:20,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:20,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:20,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:20,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:20,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:20,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:20,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:20,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:20,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:20,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:20,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:20,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:20,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:20,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:20,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:20,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:20,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:20,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:20,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:20,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:20,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:20,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:20,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:20,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:20,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:20,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:20,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:20,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:20,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:20,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:20,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:20,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:20,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:20,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:20,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:20,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:20,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:20,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:20,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:20,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:20,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:20,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:20,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:20,206 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:20,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:20,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:20,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:20,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:20,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:20,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:20,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:20,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:20,209 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:20,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:20,210 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:20,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:20,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:20,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:20,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:20,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:20,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:20,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:20,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:20,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:20,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:20,213 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:20,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:20,214 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:20,214 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_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2e0266b63b958a771d0226973905d5a39a7a28d05d194ae66381394d9ab520a [2022-11-20 09:27:20,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:20,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:20,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:20,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:20,540 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:20,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/heap-manipulation/dancing.i [2022-11-20 09:27:23,714 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:24,044 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:24,045 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/sv-benchmarks/c/heap-manipulation/dancing.i [2022-11-20 09:27:24,062 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/data/349ddfe74/f55189388ad547f3b3c83893db6e36f5/FLAG24c91001e [2022-11-20 09:27:24,082 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/data/349ddfe74/f55189388ad547f3b3c83893db6e36f5 [2022-11-20 09:27:24,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:24,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:24,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:24,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:24,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:24,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a060f1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24, skipping insertion in model container [2022-11-20 09:27:24,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:24,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:24,370 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_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/sv-benchmarks/c/heap-manipulation/dancing.i[938,951] [2022-11-20 09:27:24,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:24,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:24,525 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_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/sv-benchmarks/c/heap-manipulation/dancing.i[938,951] [2022-11-20 09:27:24,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:24,588 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:24,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24 WrapperNode [2022-11-20 09:27:24,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:24,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:24,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:24,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:24,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,665 INFO L138 Inliner]: procedures = 124, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 90 [2022-11-20 09:27:24,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:24,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:24,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:24,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:24,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,720 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:24,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:24,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:24,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:24,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (1/1) ... [2022-11-20 09:27:24,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:24,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:24,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:24,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:24,828 INFO L130 BoogieDeclarations]: Found specification of procedure is_list_containing_x [2022-11-20 09:27:24,828 INFO L138 BoogieDeclarations]: Found implementation of procedure is_list_containing_x [2022-11-20 09:27:24,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 09:27:24,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 09:27:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:27:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 09:27:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 09:27:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:25,012 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:25,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:25,315 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:25,322 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:25,323 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:27:25,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:25 BoogieIcfgContainer [2022-11-20 09:27:25,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:25,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:25,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:25,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:25,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:24" (1/3) ... [2022-11-20 09:27:25,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390006b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:25, skipping insertion in model container [2022-11-20 09:27:25,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:24" (2/3) ... [2022-11-20 09:27:25,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390006b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:25, skipping insertion in model container [2022-11-20 09:27:25,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:25" (3/3) ... [2022-11-20 09:27:25,369 INFO L112 eAbstractionObserver]: Analyzing ICFG dancing.i [2022-11-20 09:27:25,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:25,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:25,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:25,485 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;@4e74977f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:25,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:27:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:27:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:27:25,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:25,503 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] [2022-11-20 09:27:25,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1472755522, now seen corresponding path program 1 times [2022-11-20 09:27:25,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:25,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689068944] [2022-11-20 09:27:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:25,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:25,897 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 09:27:25,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:25,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689068944] [2022-11-20 09:27:25,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689068944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:25,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:25,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:27:25,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475657331] [2022-11-20 09:27:25,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:25,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:27:25,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:27:25,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:27:25,946 INFO L87 Difference]: Start difference. First operand has 41 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:25,994 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2022-11-20 09:27:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:27:25,996 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-20 09:27:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:26,006 INFO L225 Difference]: With dead ends: 77 [2022-11-20 09:27:26,007 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 09:27:26,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 09:27:26,018 INFO L413 NwaCegarLoop]: 54 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, 54 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 09:27:26,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 09:27:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-20 09:27:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 29 states have internal predecessors, (39), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 09:27:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2022-11-20 09:27:26,073 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 20 [2022-11-20 09:27:26,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:26,073 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2022-11-20 09:27:26,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:26,074 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2022-11-20 09:27:26,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:27:26,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:26,077 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] [2022-11-20 09:27:26,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:26,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:26,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash -751028367, now seen corresponding path program 1 times [2022-11-20 09:27:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:26,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596817720] [2022-11-20 09:27:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:26,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,329 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 09:27:26,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:26,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596817720] [2022-11-20 09:27:26,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596817720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:26,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:26,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:26,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372342741] [2022-11-20 09:27:26,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:26,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:26,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:26,334 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:26,413 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-11-20 09:27:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:26,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-20 09:27:26,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:26,415 INFO L225 Difference]: With dead ends: 45 [2022-11-20 09:27:26,416 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 09:27:26,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:26,418 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 6 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:26,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 181 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:26,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 09:27:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2022-11-20 09:27:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 33 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 09:27:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2022-11-20 09:27:26,427 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 20 [2022-11-20 09:27:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:26,429 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2022-11-20 09:27:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 09:27:26,430 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2022-11-20 09:27:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:27:26,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:26,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:26,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:26,432 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 789210768, now seen corresponding path program 1 times [2022-11-20 09:27:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:26,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960012074] [2022-11-20 09:27:26,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:26,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 09:27:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:27:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:26,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960012074] [2022-11-20 09:27:26,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960012074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:26,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:26,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:27:26,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900054948] [2022-11-20 09:27:26,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:26,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:27:26,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:26,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:27:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:27:26,564 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:26,640 INFO L93 Difference]: Finished difference Result 86 states and 116 transitions. [2022-11-20 09:27:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-20 09:27:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:26,642 INFO L225 Difference]: With dead ends: 86 [2022-11-20 09:27:26,643 INFO L226 Difference]: Without dead ends: 63 [2022-11-20 09:27:26,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:26,645 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:26,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-20 09:27:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2022-11-20 09:27:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.380952380952381) internal successors, (58), 44 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-20 09:27:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-20 09:27:26,658 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 26 [2022-11-20 09:27:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:26,659 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-20 09:27:26,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 09:27:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-20 09:27:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:27:26,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:26,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:26,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:26,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash 860755832, now seen corresponding path program 1 times [2022-11-20 09:27:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:26,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118859534] [2022-11-20 09:27:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 09:27:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:27,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:27,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118859534] [2022-11-20 09:27:27,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118859534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:27,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445843782] [2022-11-20 09:27:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:27,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:27,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:27,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:27:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:27:27,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:27,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445843782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:27,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:27,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-11-20 09:27:27,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839089724] [2022-11-20 09:27:27,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:27,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:27:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:27:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:27,659 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 1 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 09:27:28,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:28,077 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2022-11-20 09:27:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:28,078 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 1 states have call predecessors, (5), 4 states have call successors, (5) Word has length 29 [2022-11-20 09:27:28,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:28,081 INFO L225 Difference]: With dead ends: 118 [2022-11-20 09:27:28,081 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 09:27:28,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:27:28,083 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 134 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:28,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 338 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:27:28,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 09:27:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 63. [2022-11-20 09:27:28,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 48 states have (on average 1.375) internal successors, (66), 52 states have internal predecessors, (66), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-20 09:27:28,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2022-11-20 09:27:28,109 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 29 [2022-11-20 09:27:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:28,109 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2022-11-20 09:27:28,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (5), 1 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 09:27:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2022-11-20 09:27:28,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 09:27:28,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:28,112 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, 1, 1, 1, 1] [2022-11-20 09:27:28,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 09:27:28,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:28,324 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:28,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,325 INFO L85 PathProgramCache]: Analyzing trace with hash 162961828, now seen corresponding path program 1 times [2022-11-20 09:27:28,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639658193] [2022-11-20 09:27:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:27:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:27:28,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639658193] [2022-11-20 09:27:28,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639658193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280955195] [2022-11-20 09:27:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:28,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:28,591 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:27:28,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:28,685 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2022-11-20 09:27:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:28,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2022-11-20 09:27:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:28,688 INFO L225 Difference]: With dead ends: 75 [2022-11-20 09:27:28,688 INFO L226 Difference]: Without dead ends: 73 [2022-11-20 09:27:28,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:28,692 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 7 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:28,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 289 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-20 09:27:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-11-20 09:27:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 58 states have internal predecessors, (71), 11 states have call successors, (11), 4 states have call predecessors, (11), 6 states have return successors, (19), 8 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-20 09:27:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2022-11-20 09:27:28,717 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 31 [2022-11-20 09:27:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:28,718 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2022-11-20 09:27:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 09:27:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2022-11-20 09:27:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 09:27:28,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:28,731 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:28,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:28,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 786337177, now seen corresponding path program 1 times [2022-11-20 09:27:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873279182] [2022-11-20 09:27:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:27:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:27:29,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873279182] [2022-11-20 09:27:29,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873279182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:29,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485851977] [2022-11-20 09:27:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:29,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:29,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:29,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:27:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:29,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 09:27:29,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:29,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:29,235 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:29,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:29,255 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:29,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:29,274 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 16 treesize of output 18 [2022-11-20 09:27:29,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:29,307 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 16 treesize of output 18 [2022-11-20 09:27:29,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-20 09:27:29,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-20 09:27:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:27:29,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:29,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 [2022-11-20 09:27:29,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:29,832 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-20 09:27:29,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 24 [2022-11-20 09:27:29,845 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 7 treesize of output 3 [2022-11-20 09:27:29,854 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-20 09:27:29,855 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2022-11-20 09:27:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 09:27:29,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485851977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:29,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:29,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 16 [2022-11-20 09:27:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037896602] [2022-11-20 09:27:29,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:29,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:27:29,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:27:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:29,897 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 09:27:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:30,875 INFO L93 Difference]: Finished difference Result 269 states and 401 transitions. [2022-11-20 09:27:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:27:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 37 [2022-11-20 09:27:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:30,887 INFO L225 Difference]: With dead ends: 269 [2022-11-20 09:27:30,887 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 09:27:30,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=755, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:27:30,895 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 204 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:30,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 823 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 374 Invalid, 0 Unknown, 53 Unchecked, 0.5s Time] [2022-11-20 09:27:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 09:27:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 90. [2022-11-20 09:27:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 74 states have internal predecessors, (92), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-20 09:27:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 125 transitions. [2022-11-20 09:27:30,946 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 125 transitions. Word has length 37 [2022-11-20 09:27:30,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:30,948 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 125 transitions. [2022-11-20 09:27:30,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 09:27:30,948 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 125 transitions. [2022-11-20 09:27:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 09:27:30,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:30,952 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:30,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:27:31,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1693334873, now seen corresponding path program 1 times [2022-11-20 09:27:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448980626] [2022-11-20 09:27:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 09:27:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:27:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448980626] [2022-11-20 09:27:31,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448980626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180553604] [2022-11-20 09:27:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:31,519 INFO L87 Difference]: Start difference. First operand 90 states and 125 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:27:31,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:31,689 INFO L93 Difference]: Finished difference Result 133 states and 181 transitions. [2022-11-20 09:27:31,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:31,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-20 09:27:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:31,691 INFO L225 Difference]: With dead ends: 133 [2022-11-20 09:27:31,691 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 09:27:31,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:31,693 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 22 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:31,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 161 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:31,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 09:27:31,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2022-11-20 09:27:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.323943661971831) internal successors, (94), 76 states have internal predecessors, (94), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2022-11-20 09:27:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 127 transitions. [2022-11-20 09:27:31,712 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 127 transitions. Word has length 35 [2022-11-20 09:27:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 127 transitions. [2022-11-20 09:27:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 09:27:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 127 transitions. [2022-11-20 09:27:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 09:27:31,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:31,714 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:31,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:31,715 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:31,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1474480155, now seen corresponding path program 1 times [2022-11-20 09:27:31,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496262245] [2022-11-20 09:27:31,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 09:27:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:27:31,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496262245] [2022-11-20 09:27:31,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496262245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:27:31,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589742038] [2022-11-20 09:27:31,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:27:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:27:31,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:31,854 INFO L87 Difference]: Start difference. First operand 92 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:27:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:31,918 INFO L93 Difference]: Finished difference Result 99 states and 133 transitions. [2022-11-20 09:27:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:31,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-20 09:27:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:31,920 INFO L225 Difference]: With dead ends: 99 [2022-11-20 09:27:31,920 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 09:27:31,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:31,922 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 5 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:31,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 237 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 09:27:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2022-11-20 09:27:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 10 states have call successors, (10), 4 states have call predecessors, (10), 6 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-20 09:27:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 109 transitions. [2022-11-20 09:27:31,951 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 109 transitions. Word has length 35 [2022-11-20 09:27:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:31,951 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 109 transitions. [2022-11-20 09:27:31,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:27:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2022-11-20 09:27:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:27:31,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:31,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:31,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:31,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:31,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1846747895, now seen corresponding path program 1 times [2022-11-20 09:27:31,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149263039] [2022-11-20 09:27:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 09:27:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:27:32,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:32,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149263039] [2022-11-20 09:27:32,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149263039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:32,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:32,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:32,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788020757] [2022-11-20 09:27:32,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:32,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:32,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:32,174 INFO L87 Difference]: Start difference. First operand 80 states and 109 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:27:32,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:32,267 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2022-11-20 09:27:32,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 09:27:32,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-11-20 09:27:32,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:32,271 INFO L225 Difference]: With dead ends: 130 [2022-11-20 09:27:32,272 INFO L226 Difference]: Without dead ends: 62 [2022-11-20 09:27:32,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:27:32,275 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:32,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 144 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:32,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-20 09:27:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2022-11-20 09:27:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 48 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-20 09:27:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2022-11-20 09:27:32,294 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 79 transitions. Word has length 36 [2022-11-20 09:27:32,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:32,295 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 79 transitions. [2022-11-20 09:27:32,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-20 09:27:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 79 transitions. [2022-11-20 09:27:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 09:27:32,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:32,297 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:32,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:32,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash 803799756, now seen corresponding path program 1 times [2022-11-20 09:27:32,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997785851] [2022-11-20 09:27:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:32,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:27:33,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:33,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997785851] [2022-11-20 09:27:33,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997785851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:33,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88343430] [2022-11-20 09:27:33,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:33,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:33,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:33,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:33,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:27:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-20 09:27:33,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:33,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:33,740 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:33,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:33,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:27:33,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:33,757 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:33,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:33,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:27:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:34,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:27:34,416 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 09:27:34,417 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2022-11-20 09:27:34,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 31 treesize of output 23 [2022-11-20 09:27:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 09:27:35,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:35,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 [2022-11-20 09:27:35,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 [2022-11-20 09:27:36,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:36,074 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 140 [2022-11-20 09:27:36,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:36,088 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 88 [2022-11-20 09:27:36,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:36,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 539 treesize of output 539 [2022-11-20 09:27:36,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 663 treesize of output 627 [2022-11-20 09:27:36,189 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 622 treesize of output 606 [2022-11-20 09:27:36,231 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:36,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 737 treesize of output 645 [2022-11-20 09:27:37,344 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 22 treesize of output 18 [2022-11-20 09:27:37,351 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:27:37,363 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 8 treesize of output 4 [2022-11-20 09:27:37,462 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 8 treesize of output 4 [2022-11-20 09:27:37,518 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 8 treesize of output 4 [2022-11-20 09:27:37,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:37,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 77 [2022-11-20 09:27:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:27:38,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88343430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:38,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:38,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 40 [2022-11-20 09:27:38,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125488011] [2022-11-20 09:27:38,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:38,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-20 09:27:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-20 09:27:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 09:27:38,063 INFO L87 Difference]: Start difference. First operand 60 states and 79 transitions. Second operand has 40 states, 37 states have (on average 2.081081081081081) internal successors, (77), 39 states have internal predecessors, (77), 11 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 09:27:40,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:40,931 INFO L93 Difference]: Finished difference Result 193 states and 274 transitions. [2022-11-20 09:27:40,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 09:27:40,932 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.081081081081081) internal successors, (77), 39 states have internal predecessors, (77), 11 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) Word has length 43 [2022-11-20 09:27:40,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:40,933 INFO L225 Difference]: With dead ends: 193 [2022-11-20 09:27:40,933 INFO L226 Difference]: Without dead ends: 143 [2022-11-20 09:27:40,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=318, Invalid=2874, Unknown=0, NotChecked=0, Total=3192 [2022-11-20 09:27:40,936 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 215 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:40,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1111 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1315 Invalid, 0 Unknown, 172 Unchecked, 1.7s Time] [2022-11-20 09:27:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-20 09:27:40,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 94. [2022-11-20 09:27:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.289855072463768) internal successors, (89), 76 states have internal predecessors, (89), 13 states have call successors, (13), 6 states have call predecessors, (13), 11 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-20 09:27:40,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 127 transitions. [2022-11-20 09:27:40,955 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 127 transitions. Word has length 43 [2022-11-20 09:27:40,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:40,955 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 127 transitions. [2022-11-20 09:27:40,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.081081081081081) internal successors, (77), 39 states have internal predecessors, (77), 11 states have call successors, (11), 4 states have call predecessors, (11), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 09:27:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 127 transitions. [2022-11-20 09:27:40,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 09:27:40,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:40,956 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:40,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:41,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 09:27:41,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:41,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash -13848694, now seen corresponding path program 1 times [2022-11-20 09:27:41,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:41,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795927391] [2022-11-20 09:27:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 09:27:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:41,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795927391] [2022-11-20 09:27:41,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795927391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:41,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117570520] [2022-11-20 09:27:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:41,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:41,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:41,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:41,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:27:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 09:27:41,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:41,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:41,766 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:41,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:41,772 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 14 treesize of output 16 [2022-11-20 09:27:42,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2022-11-20 09:27:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:27:42,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:42,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 [2022-11-20 09:27:42,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:27:42,242 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-11-20 09:27:42,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 30 treesize of output 22 [2022-11-20 09:27:42,255 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 5 treesize of output 3 [2022-11-20 09:27:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 09:27:42,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117570520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:42,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:42,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2022-11-20 09:27:42,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270920637] [2022-11-20 09:27:42,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:42,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 09:27:42,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 09:27:42,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-11-20 09:27:42,324 INFO L87 Difference]: Start difference. First operand 94 states and 127 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 09:27:43,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:43,432 INFO L93 Difference]: Finished difference Result 220 states and 301 transitions. [2022-11-20 09:27:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 09:27:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 43 [2022-11-20 09:27:43,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:43,434 INFO L225 Difference]: With dead ends: 220 [2022-11-20 09:27:43,434 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 09:27:43,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=1100, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 09:27:43,436 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 272 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:43,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 729 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 392 Invalid, 0 Unknown, 56 Unchecked, 0.4s Time] [2022-11-20 09:27:43,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 09:27:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 152. [2022-11-20 09:27:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 121 states have internal predecessors, (145), 22 states have call successors, (22), 12 states have call predecessors, (22), 15 states have return successors, (38), 18 states have call predecessors, (38), 20 states have call successors, (38) [2022-11-20 09:27:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 205 transitions. [2022-11-20 09:27:43,463 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 205 transitions. Word has length 43 [2022-11-20 09:27:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:43,463 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 205 transitions. [2022-11-20 09:27:43,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-20 09:27:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 205 transitions. [2022-11-20 09:27:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 09:27:43,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:43,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:43,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:27:43,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:43,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:43,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash -161545952, now seen corresponding path program 1 times [2022-11-20 09:27:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:43,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761811050] [2022-11-20 09:27:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:27:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:43,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 09:27:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-20 09:27:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:43,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761811050] [2022-11-20 09:27:43,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761811050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:43,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:43,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739401521] [2022-11-20 09:27:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:43,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:43,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:43,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:43,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:43,949 INFO L87 Difference]: Start difference. First operand 152 states and 205 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 09:27:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:44,055 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2022-11-20 09:27:44,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:44,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-11-20 09:27:44,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:44,059 INFO L225 Difference]: With dead ends: 183 [2022-11-20 09:27:44,060 INFO L226 Difference]: Without dead ends: 181 [2022-11-20 09:27:44,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:44,061 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 7 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:44,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 324 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-20 09:27:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 167. [2022-11-20 09:27:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 124 states have (on average 1.25) internal successors, (155), 131 states have internal predecessors, (155), 24 states have call successors, (24), 14 states have call predecessors, (24), 18 states have return successors, (49), 21 states have call predecessors, (49), 22 states have call successors, (49) [2022-11-20 09:27:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2022-11-20 09:27:44,100 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 50 [2022-11-20 09:27:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:44,101 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2022-11-20 09:27:44,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 09:27:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2022-11-20 09:27:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 09:27:44,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:44,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:44,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:27:44,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1865771786, now seen corresponding path program 1 times [2022-11-20 09:27:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:44,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384964122] [2022-11-20 09:27:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:44,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:44,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 09:27:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 09:27:44,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:44,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384964122] [2022-11-20 09:27:44,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384964122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:44,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470910116] [2022-11-20 09:27:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:44,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:44,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:44,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:27:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:44,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:27:44,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 09:27:44,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:27:44,649 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 09:27:44,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470910116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:27:44,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:27:44,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-20 09:27:44,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067457105] [2022-11-20 09:27:44,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:27:44,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:27:44,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:27:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:27:44,651 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-20 09:27:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:44,870 INFO L93 Difference]: Finished difference Result 228 states and 301 transitions. [2022-11-20 09:27:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 09:27:44,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 46 [2022-11-20 09:27:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:44,872 INFO L225 Difference]: With dead ends: 228 [2022-11-20 09:27:44,872 INFO L226 Difference]: Without dead ends: 162 [2022-11-20 09:27:44,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:27:44,874 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 106 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:44,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 161 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:27:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-20 09:27:44,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 117. [2022-11-20 09:27:44,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 89 states have (on average 1.2359550561797752) internal successors, (110), 93 states have internal predecessors, (110), 13 states have call successors, (13), 10 states have call predecessors, (13), 14 states have return successors, (30), 13 states have call predecessors, (30), 12 states have call successors, (30) [2022-11-20 09:27:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 153 transitions. [2022-11-20 09:27:44,892 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 153 transitions. Word has length 46 [2022-11-20 09:27:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:44,892 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 153 transitions. [2022-11-20 09:27:44,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 12 states have internal predecessors, (67), 5 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-20 09:27:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 153 transitions. [2022-11-20 09:27:44,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 09:27:44,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:44,893 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 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 09:27:44,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 09:27:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:27:45,104 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 604583819, now seen corresponding path program 2 times [2022-11-20 09:27:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:45,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30418238] [2022-11-20 09:27:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:27:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:45,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:27:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:46,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:46,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:27:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:46,051 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 09:27:46,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30418238] [2022-11-20 09:27:46,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30418238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:27:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884592037] [2022-11-20 09:27:46,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:27:46,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:27:46,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:46,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:27:46,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:27:46,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:27:46,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:27:46,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-20 09:27:46,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:27:46,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:46,341 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:46,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:46,347 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 14 treesize of output 16 [2022-11-20 09:27:46,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:46,357 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:27:46,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:46,364 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 23 [2022-11-20 09:27:46,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:27:46,906 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 09:27:46,907 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 58 [2022-11-20 09:27:46,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:27:46,915 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2022-11-20 09:28:03,526 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:28:04,033 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 37 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:28:04,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:04,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:04,705 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 294 treesize of output 234 [2022-11-20 09:28:04,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:04,719 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 229 treesize of output 143 [2022-11-20 09:28:04,766 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:04,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 974 treesize of output 936 [2022-11-20 09:28:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:04,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:04,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2090 treesize of output 2002 [2022-11-20 09:28:04,900 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:04,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 2080 treesize of output 1922 [2022-11-20 09:28:04,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:04,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 2068 treesize of output 1856 [2022-11-20 09:28:05,620 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 570 treesize of output 546 [2022-11-20 09:28:07,448 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:28:09,826 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 39 treesize of output 31 [2022-11-20 09:28:09,862 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 7 treesize of output 3 [2022-11-20 09:28:09,877 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 7 treesize of output 3 [2022-11-20 09:28:09,897 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:28:09,909 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:28:10,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:10,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 106 [2022-11-20 09:28:10,291 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:28:10,302 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:28:10,316 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:10,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 95 [2022-11-20 09:28:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 09:28:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884592037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:10,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:10,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 12] total 35 [2022-11-20 09:28:10,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733505260] [2022-11-20 09:28:10,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:10,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 09:28:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 09:28:10,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1061, Unknown=4, NotChecked=0, Total=1190 [2022-11-20 09:28:10,695 INFO L87 Difference]: Start difference. First operand 117 states and 153 transitions. Second operand has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 09:28:25,991 WARN L233 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:28:44,133 WARN L233 SmtUtils]: Spent 16.07s on a formula simplification. DAG size of input: 63 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:28:44,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:44,418 INFO L93 Difference]: Finished difference Result 220 states and 286 transitions. [2022-11-20 09:28:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 09:28:44,419 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) Word has length 50 [2022-11-20 09:28:44,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:44,420 INFO L225 Difference]: With dead ends: 220 [2022-11-20 09:28:44,420 INFO L226 Difference]: Without dead ends: 160 [2022-11-20 09:28:44,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=315, Invalid=2329, Unknown=8, NotChecked=0, Total=2652 [2022-11-20 09:28:44,422 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 105 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:44,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 745 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 441 Invalid, 0 Unknown, 187 Unchecked, 0.7s Time] [2022-11-20 09:28:44,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-20 09:28:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2022-11-20 09:28:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 115 states have internal predecessors, (136), 15 states have call successors, (15), 9 states have call predecessors, (15), 15 states have return successors, (30), 18 states have call predecessors, (30), 14 states have call successors, (30) [2022-11-20 09:28:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 181 transitions. [2022-11-20 09:28:44,444 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 181 transitions. Word has length 50 [2022-11-20 09:28:44,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:44,444 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 181 transitions. [2022-11-20 09:28:44,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.142857142857143) internal successors, (75), 34 states have internal predecessors, (75), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 09:28:44,445 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 181 transitions. [2022-11-20 09:28:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 09:28:44,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:44,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:44,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:44,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:28:44,652 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:44,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1248112818, now seen corresponding path program 1 times [2022-11-20 09:28:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:44,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751213121] [2022-11-20 09:28:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:28:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:28:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 09:28:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:28:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:28:45,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:45,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751213121] [2022-11-20 09:28:45,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751213121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:45,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256934583] [2022-11-20 09:28:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:45,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:45,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:45,218 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:45,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:28:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 09:28:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:45,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-20 09:28:45,530 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:28:45,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 09:28:45,578 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:28:45,579 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 11 treesize of output 11 [2022-11-20 09:28:45,617 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2022-11-20 09:28:45,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 78 [2022-11-20 09:28:45,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-11-20 09:28:45,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 15 [2022-11-20 09:28:45,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:28:45,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:28:45,673 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 63 treesize of output 13 [2022-11-20 09:28:45,677 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 13 treesize of output 9 [2022-11-20 09:28:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 09:28:45,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:45,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:45,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 258 treesize of output 255 [2022-11-20 09:28:45,985 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 282 treesize of output 266 [2022-11-20 09:28:45,993 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 266 treesize of output 258 [2022-11-20 09:28:46,068 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 8 treesize of output 4 [2022-11-20 09:28:46,076 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 22 treesize of output 18 [2022-11-20 09:28:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:28:46,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256934583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:46,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:46,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2022-11-20 09:28:46,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152271918] [2022-11-20 09:28:46,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:46,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:28:46,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:28:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:28:46,340 INFO L87 Difference]: Start difference. First operand 143 states and 181 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 09:28:47,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:47,153 INFO L93 Difference]: Finished difference Result 259 states and 341 transitions. [2022-11-20 09:28:47,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 09:28:47,153 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 49 [2022-11-20 09:28:47,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:47,155 INFO L225 Difference]: With dead ends: 259 [2022-11-20 09:28:47,156 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 09:28:47,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-11-20 09:28:47,157 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 118 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:47,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 431 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 444 Invalid, 0 Unknown, 62 Unchecked, 0.6s Time] [2022-11-20 09:28:47,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 09:28:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2022-11-20 09:28:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.208) internal successors, (151), 129 states have internal predecessors, (151), 19 states have call successors, (19), 9 states have call predecessors, (19), 17 states have return successors, (42), 23 states have call predecessors, (42), 18 states have call successors, (42) [2022-11-20 09:28:47,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 212 transitions. [2022-11-20 09:28:47,192 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 212 transitions. Word has length 49 [2022-11-20 09:28:47,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:47,192 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 212 transitions. [2022-11-20 09:28:47,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 17 states have internal predecessors, (56), 5 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 09:28:47,193 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 212 transitions. [2022-11-20 09:28:47,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 09:28:47,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:47,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:47,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:47,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:28:47,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash 191887930, now seen corresponding path program 1 times [2022-11-20 09:28:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:47,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481939417] [2022-11-20 09:28:47,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 09:28:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:28:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 09:28:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:28:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 09:28:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:47,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481939417] [2022-11-20 09:28:47,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481939417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:47,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331159027] [2022-11-20 09:28:47,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:47,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:47,691 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:47,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:28:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 09:28:47,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:47,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2022-11-20 09:28:47,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:47,988 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:28:47,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:47,994 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 16 treesize of output 18 [2022-11-20 09:28:48,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:48,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:28:48,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:48,012 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 16 treesize of output 18 [2022-11-20 09:28:48,105 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:28:48,105 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 11 treesize of output 11 [2022-11-20 09:28:48,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:48,173 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:48,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 09:28:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:28:48,198 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 09:28:48,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-20 09:28:48,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-20 09:28:48,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-11-20 09:28:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:28:48,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:48,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 4 [2022-11-20 09:28:48,673 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4))) (and (forall ((v_ArrVal_1223 (Array Int Int)) (v_ArrVal_1221 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~n~0#1.base| v_ArrVal_1223) |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_1221) |c_ULTIMATE.start_main_~x~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_1224 (Array Int Int)) (v_ArrVal_1222 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~n~0#1.base| v_ArrVal_1224) |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_1222) |c_ULTIMATE.start_main_~x~0#1.base|) .cse0) 0)))) is different from false [2022-11-20 09:28:48,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:48,876 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2022-11-20 09:28:48,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 552 treesize of output 522 [2022-11-20 09:28:48,905 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 486 treesize of output 470 [2022-11-20 09:28:48,913 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 470 treesize of output 406 [2022-11-20 09:28:48,922 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 406 treesize of output 374 [2022-11-20 09:28:49,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:28:49,029 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 37 [2022-11-20 09:28:49,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:28:49,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 140 treesize of output 122 [2022-11-20 09:28:49,043 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 24 treesize of output 16 [2022-11-20 09:28:49,131 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 09:28:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 1 not checked. [2022-11-20 09:28:49,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331159027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:49,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:49,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 9] total 21 [2022-11-20 09:28:49,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014815493] [2022-11-20 09:28:49,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:49,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:28:49,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:49,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:28:49,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=326, Unknown=2, NotChecked=36, Total=420 [2022-11-20 09:28:49,164 INFO L87 Difference]: Start difference. First operand 162 states and 212 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 19 states have internal predecessors, (65), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-20 09:29:19,624 WARN L233 SmtUtils]: Spent 30.28s on a formula simplification. DAG size of input: 49 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:29:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:20,126 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2022-11-20 09:29:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:29:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 19 states have internal predecessors, (65), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 47 [2022-11-20 09:29:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:20,128 INFO L225 Difference]: With dead ends: 258 [2022-11-20 09:29:20,128 INFO L226 Difference]: Without dead ends: 151 [2022-11-20 09:29:20,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=165, Invalid=892, Unknown=3, NotChecked=62, Total=1122 [2022-11-20 09:29:20,129 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 66 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:20,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 750 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 139 Unchecked, 0.3s Time] [2022-11-20 09:29:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-20 09:29:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 130. [2022-11-20 09:29:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 101 states have internal predecessors, (116), 17 states have call successors, (17), 11 states have call predecessors, (17), 15 states have return successors, (30), 17 states have call predecessors, (30), 16 states have call successors, (30) [2022-11-20 09:29:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2022-11-20 09:29:20,156 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 47 [2022-11-20 09:29:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:20,156 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2022-11-20 09:29:20,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 19 states have internal predecessors, (65), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-20 09:29:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2022-11-20 09:29:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 09:29:20,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:20,158 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:20,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:20,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:29:20,365 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:20,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:20,365 INFO L85 PathProgramCache]: Analyzing trace with hash -664222695, now seen corresponding path program 1 times [2022-11-20 09:29:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:20,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247453312] [2022-11-20 09:29:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:29:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:29:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:29:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:29:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:21,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247453312] [2022-11-20 09:29:21,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247453312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:21,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781917311] [2022-11-20 09:29:21,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:21,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:21,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:21,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:21,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:29:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:21,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-20 09:29:21,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:21,861 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:29:21,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:21,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 09:29:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:21,889 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:29:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:21,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 09:29:22,598 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 09:29:22,599 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2022-11-20 09:29:22,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:22,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 09:29:23,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:23,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:29:23,215 INFO L321 Elim1Store]: treesize reduction 78, result has 17.9 percent of original size [2022-11-20 09:29:23,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 56 [2022-11-20 09:29:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:23,226 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-11-20 09:29:23,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:23,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:23,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:29:23,360 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 09:29:23,360 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2022-11-20 09:29:23,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:23,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 19 [2022-11-20 09:29:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 09:29:23,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:24,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781917311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:24,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:24,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2022-11-20 09:29:24,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57638093] [2022-11-20 09:29:24,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:24,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 09:29:24,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:24,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 09:29:24,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 09:29:24,220 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 09:29:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:26,663 INFO L93 Difference]: Finished difference Result 298 states and 375 transitions. [2022-11-20 09:29:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 09:29:26,664 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) Word has length 53 [2022-11-20 09:29:26,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:26,667 INFO L225 Difference]: With dead ends: 298 [2022-11-20 09:29:26,667 INFO L226 Difference]: Without dead ends: 270 [2022-11-20 09:29:26,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=263, Invalid=1993, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 09:29:26,670 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 114 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:26,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 528 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 432 Invalid, 0 Unknown, 86 Unchecked, 0.7s Time] [2022-11-20 09:29:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-20 09:29:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 251. [2022-11-20 09:29:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 189 states have (on average 1.1904761904761905) internal successors, (225), 195 states have internal predecessors, (225), 31 states have call successors, (31), 22 states have call predecessors, (31), 30 states have return successors, (55), 33 states have call predecessors, (55), 30 states have call successors, (55) [2022-11-20 09:29:26,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 311 transitions. [2022-11-20 09:29:26,741 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 311 transitions. Word has length 53 [2022-11-20 09:29:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:26,742 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 311 transitions. [2022-11-20 09:29:26,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 09:29:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 311 transitions. [2022-11-20 09:29:26,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 09:29:26,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:26,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:26,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:26,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:29:26,951 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:26,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1675339945, now seen corresponding path program 1 times [2022-11-20 09:29:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:26,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160930347] [2022-11-20 09:29:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:29:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:29:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:27,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:29:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:29:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:28,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160930347] [2022-11-20 09:29:28,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160930347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:28,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501908902] [2022-11-20 09:29:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:28,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:28,036 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:28,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:29:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:28,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-20 09:29:28,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:28,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:28,390 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:29:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:28,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 09:29:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:28,417 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:29:28,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:28,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 09:29:29,235 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 09:29:29,235 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2022-11-20 09:29:29,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:29,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2022-11-20 09:29:30,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:30,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:29:30,265 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-20 09:29:30,265 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-20 09:29:30,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:30,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 30 treesize of output 16 [2022-11-20 09:29:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:29:30,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:31,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501908902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:31,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:31,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2022-11-20 09:29:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065267633] [2022-11-20 09:29:31,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:31,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 09:29:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 09:29:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1473, Unknown=1, NotChecked=0, Total=1640 [2022-11-20 09:29:31,664 INFO L87 Difference]: Start difference. First operand 251 states and 311 transitions. Second operand has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 9 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 09:29:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:33,407 INFO L93 Difference]: Finished difference Result 365 states and 481 transitions. [2022-11-20 09:29:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 09:29:33,407 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 9 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) Word has length 53 [2022-11-20 09:29:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:33,410 INFO L225 Difference]: With dead ends: 365 [2022-11-20 09:29:33,410 INFO L226 Difference]: Without dead ends: 356 [2022-11-20 09:29:33,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=386, Invalid=2805, Unknown=1, NotChecked=0, Total=3192 [2022-11-20 09:29:33,412 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 158 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:33,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 519 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 450 Invalid, 0 Unknown, 152 Unchecked, 0.6s Time] [2022-11-20 09:29:33,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-20 09:29:33,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 322. [2022-11-20 09:29:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 240 states have (on average 1.1875) internal successors, (285), 251 states have internal predecessors, (285), 39 states have call successors, (39), 29 states have call predecessors, (39), 42 states have return successors, (89), 41 states have call predecessors, (89), 38 states have call successors, (89) [2022-11-20 09:29:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 413 transitions. [2022-11-20 09:29:33,484 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 413 transitions. Word has length 53 [2022-11-20 09:29:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:33,484 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 413 transitions. [2022-11-20 09:29:33,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 9 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-20 09:29:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 413 transitions. [2022-11-20 09:29:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 09:29:33,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:33,486 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:33,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:33,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:29:33,692 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1417174507, now seen corresponding path program 1 times [2022-11-20 09:29:33,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:33,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964776790] [2022-11-20 09:29:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 09:29:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:29:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 09:29:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 09:29:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 09:29:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 09:29:34,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:34,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964776790] [2022-11-20 09:29:34,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964776790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:34,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248886346] [2022-11-20 09:29:34,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:34,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:34,358 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:34,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:29:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:34,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-20 09:29:34,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:34,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:34,680 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:29:34,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:34,686 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:29:34,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:34,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-20 09:29:34,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:34,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-20 09:29:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:35,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:29:35,261 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 09:29:35,261 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2022-11-20 09:29:35,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:35,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 34 treesize of output 20 [2022-11-20 09:29:35,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:35,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 33 treesize of output 15 [2022-11-20 09:29:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 09:29:35,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:36,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248886346] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:36,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:29:36,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-11-20 09:29:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707944572] [2022-11-20 09:29:36,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:36,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 09:29:36,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:36,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 09:29:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:29:36,356 INFO L87 Difference]: Start difference. First operand 322 states and 413 transitions. Second operand has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 09:29:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:40,265 INFO L93 Difference]: Finished difference Result 410 states and 533 transitions. [2022-11-20 09:29:40,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 09:29:40,265 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 53 [2022-11-20 09:29:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:40,268 INFO L225 Difference]: With dead ends: 410 [2022-11-20 09:29:40,268 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 09:29:40,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 85 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=490, Invalid=3292, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 09:29:40,270 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 405 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:40,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 676 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 658 Invalid, 0 Unknown, 134 Unchecked, 0.8s Time] [2022-11-20 09:29:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 09:29:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 351. [2022-11-20 09:29:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 263 states have (on average 1.1711026615969582) internal successors, (308), 274 states have internal predecessors, (308), 43 states have call successors, (43), 31 states have call predecessors, (43), 44 states have return successors, (93), 45 states have call predecessors, (93), 42 states have call successors, (93) [2022-11-20 09:29:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 444 transitions. [2022-11-20 09:29:40,343 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 444 transitions. Word has length 53 [2022-11-20 09:29:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:40,344 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 444 transitions. [2022-11-20 09:29:40,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.84) internal successors, (71), 25 states have internal predecessors, (71), 7 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-20 09:29:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 444 transitions. [2022-11-20 09:29:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 09:29:40,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:40,346 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 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 09:29:40,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:40,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:40,555 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1972047423, now seen corresponding path program 2 times [2022-11-20 09:29:40,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:40,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338818039] [2022-11-20 09:29:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 09:29:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:29:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:29:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 09:29:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 09:29:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-20 09:29:42,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:42,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338818039] [2022-11-20 09:29:42,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338818039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:42,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116751331] [2022-11-20 09:29:42,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:29:42,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:42,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:42,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:42,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4cc15ea-1bb3-4864-91c7-5e77de29f40f/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:29:42,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:29:42,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:42,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-20 09:29:42,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:42,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:42,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:42,773 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 16 treesize of output 16 [2022-11-20 09:29:42,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:29:42,787 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 39 treesize of output 26 [2022-11-20 09:29:42,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2022-11-20 09:29:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 09:29:43,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:44,210 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:29:44,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1266 treesize of output 1263 [2022-11-20 09:29:48,127 INFO L321 Elim1Store]: treesize reduction 3622, result has 16.9 percent of original size [2022-11-20 09:29:48,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 18 new quantified variables, introduced 138 case distinctions, treesize of input 277816 treesize of output 254695 [2022-11-20 09:30:09,356 WARN L233 SmtUtils]: Spent 21.23s on a formula simplification. DAG size of input: 832 DAG size of output: 830 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 09:30:10,595 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 231604 treesize of output 230572 [2022-11-20 09:30:22,416 WARN L233 SmtUtils]: Spent 11.82s on a formula simplification. DAG size of input: 867 DAG size of output: 860 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-20 09:30:22,534 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 229873 treesize of output 224921 [2022-11-20 09:30:24,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 09:30:24,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 225246 treesize of output 225276 [2022-11-20 09:31:42,398 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 8 treesize of output 4 [2022-11-20 09:33:53,049 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 22 treesize of output 18 [2022-11-20 09:33:53,167 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 22 treesize of output 18 [2022-11-20 09:33:53,280 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 22 treesize of output 18 [2022-11-20 09:33:53,422 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 22 treesize of output 18 [2022-11-20 09:33:54,353 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 22 treesize of output 18 [2022-11-20 09:33:54,492 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 22 treesize of output 18 [2022-11-20 09:33:54,638 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 22 treesize of output 18 [2022-11-20 09:33:54,813 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 22 treesize of output 18 [2022-11-20 09:33:57,282 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 24 treesize of output 22 [2022-11-20 09:33:57,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,399 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 8 treesize of output 4 [2022-11-20 09:33:57,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,529 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,587 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,639 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,666 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,699 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,727 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,755 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,786 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,816 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,831 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,845 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,876 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,905 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,936 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:33:57,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:33:57,967 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:00,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:00,780 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:00,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:00,807 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:00,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:00,834 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:00,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:00,860 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:00,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:00,993 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:01,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:01,087 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:01,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:01,246 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:01,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:01,632 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:01,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:01,771 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:01,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:01,883 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:01,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:01,983 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,749 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,780 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,813 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,883 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,916 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,949 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:04,966 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:04,982 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:05,000 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:05,017 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:05,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:05,050 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:05,069 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:05,085 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,048 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,080 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,097 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,112 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,184 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,220 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,337 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,358 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,379 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,397 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,419 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,679 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,689 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,716 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,744 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,771 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,888 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:12,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:12,971 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,075 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,087 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,182 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,307 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,403 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,493 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,603 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,627 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,652 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,675 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,700 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,726 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,752 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,766 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,778 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,791 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,804 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,830 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,855 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:34:13,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:13,882 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:12,916 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 22 treesize of output 18 [2022-11-20 09:35:13,075 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 22 treesize of output 18 [2022-11-20 09:35:13,228 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 22 treesize of output 18 [2022-11-20 09:35:13,422 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 22 treesize of output 18 [2022-11-20 09:35:14,660 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 22 treesize of output 18 [2022-11-20 09:35:14,841 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 22 treesize of output 18 [2022-11-20 09:35:15,023 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 22 treesize of output 18 [2022-11-20 09:35:15,236 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 22 treesize of output 18 [2022-11-20 09:35:17,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:17,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,390 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 8 treesize of output 4 [2022-11-20 09:35:17,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,501 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,556 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,608 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,634 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,661 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,689 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,715 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,743 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,771 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,785 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,799 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,815 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,830 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,860 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,888 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:17,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:17,919 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:21,999 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,010 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,039 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,054 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,066 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,093 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,155 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,196 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,324 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,419 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,431 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,456 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,482 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,525 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,540 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,553 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,580 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,607 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,634 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,661 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:22,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:22,690 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,656 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,668 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,679 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,702 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,742 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,766 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,790 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,814 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,837 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,860 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,884 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,941 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,959 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,971 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:27,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:27,998 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,028 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,090 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,132 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,221 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,300 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,327 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,345 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,358 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,387 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,402 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,416 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,432 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,445 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,475 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,504 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,519 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,540 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,570 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,601 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:28,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:28,631 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:51,836 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 22 treesize of output 18 [2022-11-20 09:35:51,961 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 22 treesize of output 18 [2022-11-20 09:35:52,092 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 22 treesize of output 18 [2022-11-20 09:35:52,249 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 22 treesize of output 18 [2022-11-20 09:35:54,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:54,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,352 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 8 treesize of output 4 [2022-11-20 09:35:54,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,461 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,516 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,568 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,595 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,622 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,650 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,679 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,707 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,735 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,750 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,763 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,792 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,821 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,851 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:54,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:54,881 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:58,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:58,829 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:58,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:58,870 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:58,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:58,909 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:58,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:58,949 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,058 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,125 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,381 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,480 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,506 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,532 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,565 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,576 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,603 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,628 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,653 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,678 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,702 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:35:59,715 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:59,727 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,337 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,367 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,396 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,459 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,476 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,491 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,522 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,538 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,553 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,583 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,615 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,648 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,717 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,755 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,815 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,851 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:02,942 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:02,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,001 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,123 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,139 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,244 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,277 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,314 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,350 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,387 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,422 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,475 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,512 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,535 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,558 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,570 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,581 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,605 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-11-20 09:36:03,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:03,628 WARN L207 Elim1Store]: Array PQE input equivalent to true