./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/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_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/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_dfc7595b-5421-4184-95e7-702b1b8d728b/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 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 --- 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 09:34:34,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:34:34,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:34:34,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:34:34,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:34:34,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:34:34,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:34:34,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:34:34,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:34:34,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:34:34,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:34:34,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:34:34,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:34:34,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:34:34,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:34:34,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:34:34,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:34:34,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:34:34,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:34:34,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:34:34,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:34:34,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:34:34,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:34:34,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:34:34,758 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:34:34,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:34:34,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:34:34,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:34:34,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:34:34,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:34:34,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:34:34,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:34:34,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:34:34,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:34:34,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:34:34,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:34:34,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:34:34,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:34:34,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:34:34,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:34:34,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:34:34,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:34:34,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:34:34,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:34:34,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:34:34,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:34:34,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:34:34,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:34:34,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:34:34,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:34:34,829 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:34:34,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:34:34,830 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:34:34,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:34:34,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:34:34,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:34:34,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:34:34,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:34:34,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:34:34,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:34:34,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:34:34,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:34:34,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:34:34,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:34:34,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:34:34,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:34:34,834 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:34:34,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:34:34,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:34:34,835 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_dfc7595b-5421-4184-95e7-702b1b8d728b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14bc2dbf7c29b1d0f6a0a1f7aa323adbc9855e56ce7f667c86a31ecee97dcbe0 [2022-11-20 09:34:35,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:34:35,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:34:35,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:34:35,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:34:35,214 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:34:35,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/array-fpi/eqn1.c [2022-11-20 09:34:38,191 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:34:38,410 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:34:38,411 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/sv-benchmarks/c/array-fpi/eqn1.c [2022-11-20 09:34:38,418 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/data/dafb2c8fb/69bfaffe212041c9a54d9fcf00e92f2d/FLAG4ecc3cf69 [2022-11-20 09:34:38,433 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/data/dafb2c8fb/69bfaffe212041c9a54d9fcf00e92f2d [2022-11-20 09:34:38,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:34:38,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:34:38,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:34:38,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:34:38,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:34:38,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292bb532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38, skipping insertion in model container [2022-11-20 09:34:38,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:34:38,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:34:38,656 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_dfc7595b-5421-4184-95e7-702b1b8d728b/sv-benchmarks/c/array-fpi/eqn1.c[587,600] [2022-11-20 09:34:38,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:34:38,689 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:34:38,704 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_dfc7595b-5421-4184-95e7-702b1b8d728b/sv-benchmarks/c/array-fpi/eqn1.c[587,600] [2022-11-20 09:34:38,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:34:38,727 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:34:38,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38 WrapperNode [2022-11-20 09:34:38,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:34:38,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:34:38,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:34:38,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:34:38,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,768 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-11-20 09:34:38,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:34:38,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:34:38,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:34:38,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:34:38,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:34:38,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:34:38,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:34:38,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:34:38,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (1/1) ... [2022-11-20 09:34:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:34:38,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:38,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:34:38,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:34:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:34:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:34:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:34:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 09:34:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:34:38,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:34:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:34:38,969 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:34:38,972 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:34:39,287 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:34:39,294 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:34:39,297 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 09:34:39,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:39 BoogieIcfgContainer [2022-11-20 09:34:39,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:34:39,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:34:39,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:34:39,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:34:39,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:34:38" (1/3) ... [2022-11-20 09:34:39,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d48fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:39, skipping insertion in model container [2022-11-20 09:34:39,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:34:38" (2/3) ... [2022-11-20 09:34:39,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221d48fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:34:39, skipping insertion in model container [2022-11-20 09:34:39,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:34:39" (3/3) ... [2022-11-20 09:34:39,313 INFO L112 eAbstractionObserver]: Analyzing ICFG eqn1.c [2022-11-20 09:34:39,335 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:34:39,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:34:39,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:34:39,418 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;@7a395d19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:34:39,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:34:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:39,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:34:39,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:39,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:39,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-11-20 09:34:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:39,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764030525] [2022-11-20 09:34:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:39,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:39,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:39,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764030525] [2022-11-20 09:34:39,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 09:34:39,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799037084] [2022-11-20 09:34:39,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:39,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:39,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:39,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:39,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:34:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:39,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 09:34:39,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:39,768 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 09:34:39,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:34:39,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799037084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:39,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:39,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:34:39,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781549374] [2022-11-20 09:34:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:34:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:39,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:34:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:34:39,811 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:39,826 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-20 09:34:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:34:39,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 09:34:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:39,837 INFO L225 Difference]: With dead ends: 38 [2022-11-20 09:34:39,837 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 09:34:39,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 09:34:39,845 INFO L413 NwaCegarLoop]: 24 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, 24 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 09:34:39,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:34:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 09:34:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 09:34:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:39,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-20 09:34:39,881 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-20 09:34:39,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:39,882 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-20 09:34:39,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:39,882 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-20 09:34:39,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 09:34:39,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:39,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:39,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:40,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 09:34:40,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:40,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-11-20 09:34:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:40,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403409469] [2022-11-20 09:34:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:40,136 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:40,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2138606741] [2022-11-20 09:34:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:40,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:40,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:40,138 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:40,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:34:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:40,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 09:34:40,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:40,317 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 09:34:40,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 09:34:40,332 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 8 treesize of output 7 [2022-11-20 09:34:40,348 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 8 treesize of output 7 [2022-11-20 09:34:40,457 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 09:34:40,532 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 09:34:40,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:34:40,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:40,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403409469] [2022-11-20 09:34:40,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:40,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138606741] [2022-11-20 09:34:40,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138606741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:40,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:40,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:34:40,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117057039] [2022-11-20 09:34:40,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:40,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:34:40,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:34:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:34:40,537 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:40,663 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-20 09:34:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:34:40,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 09:34:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:40,665 INFO L225 Difference]: With dead ends: 34 [2022-11-20 09:34:40,665 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 09:34:40,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:34:40,667 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:40,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:40,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 09:34:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-11-20 09:34:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-20 09:34:40,673 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-11-20 09:34:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:40,674 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 09:34:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-20 09:34:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:34:40,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:40,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:40,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:40,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 09:34:40,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:40,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2022-11-20 09:34:40,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:40,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883021898] [2022-11-20 09:34:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:40,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:40,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107706842] [2022-11-20 09:34:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:40,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:40,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:40,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:40,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:34:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:41,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:34:41,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:41,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:34:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:41,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883021898] [2022-11-20 09:34:41,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:41,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107706842] [2022-11-20 09:34:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107706842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:41,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:41,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:34:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657072523] [2022-11-20 09:34:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:34:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:34:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:34:41,099 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:41,229 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-20 09:34:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:34:41,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 09:34:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:41,235 INFO L225 Difference]: With dead ends: 49 [2022-11-20 09:34:41,236 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 09:34:41,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:34:41,242 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:41,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:41,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 09:34:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-20 09:34:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-20 09:34:41,259 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-11-20 09:34:41,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:41,260 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-20 09:34:41,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:41,260 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-20 09:34:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 09:34:41,260 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:41,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:41,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:41,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:41,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2022-11-20 09:34:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:41,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025842174] [2022-11-20 09:34:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:41,491 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:41,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127568919] [2022-11-20 09:34:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:41,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:41,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:41,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:41,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:34:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:41,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:34:41,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:41,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:41,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025842174] [2022-11-20 09:34:41,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127568919] [2022-11-20 09:34:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127568919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:41,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:41,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-20 09:34:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177259469] [2022-11-20 09:34:41,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:41,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:34:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:41,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:34:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:34:41,667 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:41,775 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-20 09:34:41,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:34:41,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 09:34:41,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:41,776 INFO L225 Difference]: With dead ends: 44 [2022-11-20 09:34:41,776 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 09:34:41,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:34:41,778 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:41,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 09:34:41,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2022-11-20 09:34:41,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:41,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-20 09:34:41,783 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-20 09:34:41,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:41,784 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-20 09:34:41,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-20 09:34:41,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:34:41,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:41,785 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:41,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:41,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:41,991 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:41,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:41,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2022-11-20 09:34:41,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:41,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480490530] [2022-11-20 09:34:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:41,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:42,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:42,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547848228] [2022-11-20 09:34:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:42,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:42,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:42,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:34:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:42,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 09:34:42,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:42,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:34:42,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480490530] [2022-11-20 09:34:42,150 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547848228] [2022-11-20 09:34:42,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547848228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:34:42,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:34:42,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:34:42,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427738746] [2022-11-20 09:34:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:34:42,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:34:42,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:34:42,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:34:42,153 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:42,259 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-20 09:34:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:34:42,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 09:34:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:42,261 INFO L225 Difference]: With dead ends: 41 [2022-11-20 09:34:42,261 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 09:34:42,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:34:42,263 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:42,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 09:34:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-20 09:34:42,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:42,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-20 09:34:42,273 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-11-20 09:34:42,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:42,273 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-20 09:34:42,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:42,274 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-20 09:34:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 09:34:42,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:42,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:42,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:42,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-11-20 09:34:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:42,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149444972] [2022-11-20 09:34:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:42,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:42,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413743802] [2022-11-20 09:34:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:42,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:42,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:42,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:42,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:34:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:42,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 09:34:42,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:42,649 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 09:34:42,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:42,657 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 14 [2022-11-20 09:34:42,662 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 8 treesize of output 7 [2022-11-20 09:34:42,682 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 09:34:42,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2022-11-20 09:34:42,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:42,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:43,013 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)) is different from false [2022-11-20 09:34:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-20 09:34:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:43,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149444972] [2022-11-20 09:34:43,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:43,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413743802] [2022-11-20 09:34:43,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413743802] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:43,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:43,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 09:34:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734160512] [2022-11-20 09:34:43,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:34:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:34:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2022-11-20 09:34:43,033 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:43,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:43,241 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-20 09:34:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:34:43,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 09:34:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:43,242 INFO L225 Difference]: With dead ends: 40 [2022-11-20 09:34:43,243 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 09:34:43,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=153, Unknown=1, NotChecked=26, Total=240 [2022-11-20 09:34:43,244 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:43,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-20 09:34:43,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 09:34:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-11-20 09:34:43,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:43,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-20 09:34:43,250 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-11-20 09:34:43,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:43,250 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-20 09:34:43,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-20 09:34:43,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:34:43,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:43,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:43,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:43,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:34:43,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:43,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:43,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2022-11-20 09:34:43,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:43,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249419937] [2022-11-20 09:34:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:43,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:43,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332886367] [2022-11-20 09:34:43,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:34:43,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:43,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:43,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:43,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:34:43,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:34:43,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:43,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:34:43,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:43,737 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 09:34:43,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:43,818 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 09:34:43,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:43,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249419937] [2022-11-20 09:34:43,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:43,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332886367] [2022-11-20 09:34:43,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332886367] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:43,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:43,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 09:34:43,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773187289] [2022-11-20 09:34:43,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:43,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:34:43,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:34:43,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:34:43,823 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:44,029 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-20 09:34:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:34:44,030 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 09:34:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:44,031 INFO L225 Difference]: With dead ends: 61 [2022-11-20 09:34:44,031 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 09:34:44,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-20 09:34:44,032 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:44,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 09:34:44,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2022-11-20 09:34:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-20 09:34:44,040 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2022-11-20 09:34:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:44,041 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-20 09:34:44,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-20 09:34:44,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 09:34:44,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:44,042 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:44,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:44,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:44,249 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:44,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:44,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2022-11-20 09:34:44,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:44,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760770598] [2022-11-20 09:34:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:44,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:44,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:44,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702329262] [2022-11-20 09:34:44,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:34:44,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:44,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:44,310 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:44,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:34:44,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:34:44,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:44,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 09:34:44,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:44,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:44,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:44,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760770598] [2022-11-20 09:34:44,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:44,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702329262] [2022-11-20 09:34:44,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702329262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:44,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:44,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-20 09:34:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303828116] [2022-11-20 09:34:44,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:44,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:34:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:44,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:34:44,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:34:44,565 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:44,742 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-11-20 09:34:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:34:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-20 09:34:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:44,743 INFO L225 Difference]: With dead ends: 56 [2022-11-20 09:34:44,743 INFO L226 Difference]: Without dead ends: 49 [2022-11-20 09:34:44,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:34:44,744 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:44,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 61 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:44,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-20 09:34:44,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-11-20 09:34:44,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-20 09:34:44,750 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2022-11-20 09:34:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:44,750 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-20 09:34:44,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:44,751 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-20 09:34:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:34:44,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:44,751 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:44,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:44,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:44,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2022-11-20 09:34:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:44,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571120420] [2022-11-20 09:34:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:44,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:44,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:44,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242453618] [2022-11-20 09:34:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:44,976 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:45,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:34:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:34:45,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 09:34:45,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:45,130 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:34:45,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:34:45,168 INFO L321 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2022-11-20 09:34:45,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 71 [2022-11-20 09:34:45,181 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 8 treesize of output 7 [2022-11-20 09:34:45,211 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 5 [2022-11-20 09:34:45,216 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 09:34:45,230 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 8 treesize of output 7 [2022-11-20 09:34:45,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-20 09:34:45,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:45,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:45,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 34 [2022-11-20 09:34:45,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:45,366 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 9 treesize of output 7 [2022-11-20 09:34:45,396 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 09:34:45,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:45,456 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:34:45,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:34:45,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:45,530 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:34:45,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-20 09:34:45,793 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:34:45,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 56 treesize of output 32 [2022-11-20 09:34:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:45,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:46,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571120420] [2022-11-20 09:34:46,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:46,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242453618] [2022-11-20 09:34:46,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242453618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:46,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:46,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2022-11-20 09:34:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623461659] [2022-11-20 09:34:46,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 09:34:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 09:34:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-20 09:34:46,536 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:46,835 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-11-20 09:34:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 09:34:46,836 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 09:34:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:46,836 INFO L225 Difference]: With dead ends: 36 [2022-11-20 09:34:46,836 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 09:34:46,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:34:46,837 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:46,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 45 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-20 09:34:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 09:34:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-20 09:34:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-20 09:34:46,845 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2022-11-20 09:34:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:46,846 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-20 09:34:46,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:46,846 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-20 09:34:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 09:34:46,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:46,847 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:46,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:47,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:47,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2022-11-20 09:34:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:47,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330297760] [2022-11-20 09:34:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:47,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:47,106 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:47,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946456255] [2022-11-20 09:34:47,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:34:47,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:47,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:47,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:47,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:34:47,377 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:34:47,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:47,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 09:34:47,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:47,422 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-20 09:34:47,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-20 09:34:47,432 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 8 treesize of output 7 [2022-11-20 09:34:47,441 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 8 treesize of output 7 [2022-11-20 09:34:47,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-20 09:34:47,474 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 09:34:47,517 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 09:34:47,563 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 09:34:47,602 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 09:34:47,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:34:47,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:47,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:47,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:34:47,697 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:34:47,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:47,755 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 21 treesize of output 20 [2022-11-20 09:34:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:47,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:48,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:34:48,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:48,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330297760] [2022-11-20 09:34:48,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:48,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946456255] [2022-11-20 09:34:48,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946456255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:48,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:48,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 09:34:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826055224] [2022-11-20 09:34:48,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:48,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 09:34:48,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:48,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 09:34:48,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=177, Unknown=1, NotChecked=0, Total=240 [2022-11-20 09:34:48,235 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:48,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:48,657 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2022-11-20 09:34:48,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:34:48,657 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-20 09:34:48,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:48,658 INFO L225 Difference]: With dead ends: 70 [2022-11-20 09:34:48,658 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 09:34:48,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=569, Unknown=1, NotChecked=0, Total=756 [2022-11-20 09:34:48,659 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 87 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:48,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 93 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 85 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-11-20 09:34:48,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 09:34:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 39. [2022-11-20 09:34:48,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-20 09:34:48,667 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 20 [2022-11-20 09:34:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:48,667 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-20 09:34:48,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:48,667 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-20 09:34:48,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:34:48,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:48,668 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:48,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:48,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:48,897 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:48,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:48,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2022-11-20 09:34:48,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:48,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276573088] [2022-11-20 09:34:48,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:48,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:48,913 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:48,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914702012] [2022-11-20 09:34:48,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:34:48,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:48,928 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:48,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:34:49,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:34:49,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:49,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:34:49,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:34:49,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:34:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:34:49,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276573088] [2022-11-20 09:34:49,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:34:49,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914702012] [2022-11-20 09:34:49,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914702012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:34:49,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:34:49,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-20 09:34:49,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944117554] [2022-11-20 09:34:49,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:34:49,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:34:49,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:34:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:34:49,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:34:49,181 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:49,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:34:49,334 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-11-20 09:34:49,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:34:49,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 09:34:49,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:34:49,336 INFO L225 Difference]: With dead ends: 63 [2022-11-20 09:34:49,336 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 09:34:49,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:34:49,337 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:34:49,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 60 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 09:34:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 09:34:49,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-11-20 09:34:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-20 09:34:49,343 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2022-11-20 09:34:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:34:49,343 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-20 09:34:49,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:34:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-20 09:34:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:34:49,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:34:49,344 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:34:49,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:34:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 09:34:49,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:34:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:34:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2022-11-20 09:34:49,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:34:49,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863814116] [2022-11-20 09:34:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:34:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:34:49,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:34:49,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644772013] [2022-11-20 09:34:49,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:34:49,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:34:49,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:34:49,588 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:34:49,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:34:49,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:34:49,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:34:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 09:34:49,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:34:49,833 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:34:49,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:34:49,839 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 09:34:49,871 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-20 09:34:49,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-20 09:34:49,890 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 8 treesize of output 7 [2022-11-20 09:34:49,905 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 5 treesize of output 3 [2022-11-20 09:34:49,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-20 09:34:49,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:49,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 3 [2022-11-20 09:34:49,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 63 [2022-11-20 09:34:49,998 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 09:34:50,028 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 09:34:50,104 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:34:50,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 109 [2022-11-20 09:34:50,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:50,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:34:50,153 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:34:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,268 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:34:50,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 49 [2022-11-20 09:34:50,450 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:34:50,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 165 treesize of output 145 [2022-11-20 09:34:50,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:50,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-11-20 09:34:50,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:50,646 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:34:50,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:34:50,657 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-20 09:34:50,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 68 [2022-11-20 09:34:50,973 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-20 09:34:50,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 78 treesize of output 42 [2022-11-20 09:34:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:34:50,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:34:54,026 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse15 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse14 (* .cse15 8)) (.cse5 (<= .cse15 2147483647)) (.cse13 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse9 (<= .cse13 2147483647)) (.cse0 (not .cse5)) (.cse4 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ .cse14 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (* 8 .cse13))) (and (or (let ((.cse1 (+ 2 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse8))))) (and (or .cse0 (forall ((v_ArrVal_397 Int)) (or (not (<= .cse1 v_ArrVal_397)) (= 3 (let ((.cse2 (store .cse3 .cse4 v_ArrVal_397))) (+ (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (or .cse5 (forall ((v_ArrVal_397 Int)) (or (= 3 (let ((.cse6 (store .cse3 .cse7 v_ArrVal_397))) (+ (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= .cse1 v_ArrVal_397))))))) (not .cse9)) (or .cse9 (let ((.cse10 (+ (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse8)) 2))) (and (or .cse0 (forall ((v_ArrVal_397 Int)) (or (not (<= .cse10 v_ArrVal_397)) (= 3 (let ((.cse11 (store .cse3 .cse4 v_ArrVal_397))) (+ (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse11) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (or (forall ((v_ArrVal_397 Int)) (or (= 3 (let ((.cse12 (store .cse3 .cse7 v_ArrVal_397))) (+ (select .cse12 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= .cse10 v_ArrVal_397)))) .cse5)))))))) is different from false [2022-11-20 09:35:06,395 WARN L233 SmtUtils]: Spent 9.76s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:35:08,988 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse22 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse23 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse19 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse8 (<= .cse23 2147483647)) (.cse20 (* .cse23 8)) (.cse21 (* .cse22 8)) (.cse7 (<= .cse22 2147483647))) (let ((.cse1 (not .cse7)) (.cse4 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse12 (not .cse8)) (.cse10 (+ .cse21 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse11 (+ .cse20 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse14 (* 8 .cse19)) (.cse0 (<= .cse19 2147483647))) (and (or .cse0 (let ((.cse6 (+ (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse14)) 2))) (and (or .cse1 (forall ((v_ArrVal_397 Int) (v_ArrVal_394 Int)) (or (= 3 (let ((.cse2 (store (store .cse3 .cse4 v_ArrVal_394) .cse5 v_ArrVal_397))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= .cse6 v_ArrVal_394)) (not (<= (+ v_ArrVal_394 2) v_ArrVal_397))))) (or .cse7 (and (or .cse8 (forall ((v_ArrVal_397 Int) (v_ArrVal_394 Int)) (or (= (let ((.cse9 (store (store .cse3 .cse10 v_ArrVal_394) .cse11 v_ArrVal_397))) (+ (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 3) (not (<= .cse6 v_ArrVal_394)) (not (<= (+ v_ArrVal_394 2) v_ArrVal_397))))) (or .cse12 (forall ((v_ArrVal_397 Int) (v_ArrVal_394 Int)) (or (= (let ((.cse13 (store (store .cse3 .cse10 v_ArrVal_394) .cse5 v_ArrVal_397))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|))) 3) (not (<= .cse6 v_ArrVal_394)) (not (<= (+ v_ArrVal_394 2) v_ArrVal_397)))))))))) (or (let ((.cse15 (+ 2 (select .cse3 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse14))))) (and (or .cse1 (and (or .cse8 (forall ((v_ArrVal_397 Int) (v_ArrVal_394 Int)) (or (not (<= .cse15 v_ArrVal_394)) (= 3 (let ((.cse16 (store (store .cse3 .cse4 v_ArrVal_394) .cse11 v_ArrVal_397))) (+ (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (not (<= (+ v_ArrVal_394 2) v_ArrVal_397))))) (or (forall ((v_ArrVal_397 Int) (v_ArrVal_394 Int)) (or (= 3 (let ((.cse17 (store (store .cse3 .cse4 v_ArrVal_394) .cse5 v_ArrVal_397))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (not (<= .cse15 v_ArrVal_394)) (not (<= (+ v_ArrVal_394 2) v_ArrVal_397)))) .cse12))) (or (forall ((v_ArrVal_397 Int) (v_ArrVal_394 Int)) (or (not (<= .cse15 v_ArrVal_394)) (= (let ((.cse18 (store (store .cse3 .cse10 v_ArrVal_394) .cse11 v_ArrVal_397))) (+ (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18) |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|))) 3) (not (<= (+ v_ArrVal_394 2) v_ArrVal_397)))) .cse7))) (not .cse0)))))) is different from false [2022-11-20 09:35:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 09:35:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863814116] [2022-11-20 09:35:09,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:09,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644772013] [2022-11-20 09:35:09,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644772013] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:09,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:35:09,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-20 09:35:09,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807525329] [2022-11-20 09:35:09,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:09,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 09:35:09,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:09,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 09:35:09,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=421, Unknown=3, NotChecked=86, Total=600 [2022-11-20 09:35:09,053 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:09,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:09,864 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-11-20 09:35:09,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 09:35:09,865 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 09:35:09,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:09,867 INFO L225 Difference]: With dead ends: 56 [2022-11-20 09:35:09,867 INFO L226 Difference]: Without dead ends: 54 [2022-11-20 09:35:09,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=147, Invalid=670, Unknown=3, NotChecked=110, Total=930 [2022-11-20 09:35:09,868 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:09,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 103 Unchecked, 0.2s Time] [2022-11-20 09:35:09,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-20 09:35:09,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2022-11-20 09:35:09,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-11-20 09:35:09,879 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2022-11-20 09:35:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:09,879 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-11-20 09:35:09,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-20 09:35:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:35:09,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:09,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:09,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:10,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 09:35:10,086 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash -900609774, now seen corresponding path program 5 times [2022-11-20 09:35:10,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:10,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612570942] [2022-11-20 09:35:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:10,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:10,116 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:10,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87175998] [2022-11-20 09:35:10,122 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:35:10,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:10,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:10,123 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:10,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:35:22,387 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-20 09:35:22,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:22,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:35:22,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:35:22,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:22,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:35:22,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:22,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612570942] [2022-11-20 09:35:22,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:22,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87175998] [2022-11-20 09:35:22,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87175998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:22,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:35:22,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 09:35:22,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736764574] [2022-11-20 09:35:22,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:22,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:35:22,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:35:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:35:22,569 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:22,842 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2022-11-20 09:35:22,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:35:22,843 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 09:35:22,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:22,843 INFO L225 Difference]: With dead ends: 94 [2022-11-20 09:35:22,843 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 09:35:22,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-20 09:35:22,844 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 85 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:22,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 56 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:35:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 09:35:22,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 43. [2022-11-20 09:35:22,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-11-20 09:35:22,855 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 24 [2022-11-20 09:35:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:22,855 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-20 09:35:22,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-20 09:35:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:35:22,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:22,857 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:22,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:23,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:35:23,065 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:23,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:23,066 INFO L85 PathProgramCache]: Analyzing trace with hash 149788298, now seen corresponding path program 4 times [2022-11-20 09:35:23,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:23,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585132716] [2022-11-20 09:35:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:23,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:23,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029830909] [2022-11-20 09:35:23,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:35:23,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:23,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:23,105 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:23,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:35:23,218 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:35:23,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:23,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 09:35:23,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:35:23,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:35:23,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:23,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585132716] [2022-11-20 09:35:23,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:23,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029830909] [2022-11-20 09:35:23,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029830909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:23,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:35:23,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-20 09:35:23,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575084183] [2022-11-20 09:35:23,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:23,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:35:23,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:23,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:35:23,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:35:23,417 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:23,727 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-11-20 09:35:23,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 09:35:23,727 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 09:35:23,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:23,728 INFO L225 Difference]: With dead ends: 78 [2022-11-20 09:35:23,729 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 09:35:23,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-11-20 09:35:23,730 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 65 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:23,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 75 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:35:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 09:35:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 43. [2022-11-20 09:35:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-11-20 09:35:23,740 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 26 [2022-11-20 09:35:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:23,740 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-11-20 09:35:23,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-11-20 09:35:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:35:23,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:23,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:23,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:23,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 09:35:23,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 6 times [2022-11-20 09:35:23,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:23,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295666793] [2022-11-20 09:35:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:23,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:23,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549579078] [2022-11-20 09:35:23,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:35:23,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:23,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:23,979 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:23,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 09:35:24,585 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-20 09:35:24,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:24,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 09:35:24,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:24,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:24,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:24,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295666793] [2022-11-20 09:35:24,821 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:35:24,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549579078] [2022-11-20 09:35:24,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549579078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:24,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:35:24,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-20 09:35:24,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100109421] [2022-11-20 09:35:24,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:24,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 09:35:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 09:35:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 09:35:24,823 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:35:25,288 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2022-11-20 09:35:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 09:35:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-20 09:35:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:35:25,290 INFO L225 Difference]: With dead ends: 115 [2022-11-20 09:35:25,290 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 09:35:25,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2022-11-20 09:35:25,292 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 183 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:35:25,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 97 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 09:35:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 09:35:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 59. [2022-11-20 09:35:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2022-11-20 09:35:25,306 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 26 [2022-11-20 09:35:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:35:25,306 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2022-11-20 09:35:25,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2022-11-20 09:35:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:35:25,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:35:25,307 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:35:25,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:25,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:25,514 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:35:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 5 times [2022-11-20 09:35:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:25,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776161014] [2022-11-20 09:35:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:25,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:25,540 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:35:25,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732324783] [2022-11-20 09:35:25,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:35:25,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:25,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:25,542 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:25,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 09:35:32,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 09:35:32,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:32,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 09:35:32,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:32,959 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 09:35:32,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:32,970 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:35:32,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:35:32,979 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 8 treesize of output 7 [2022-11-20 09:35:32,988 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 8 treesize of output 7 [2022-11-20 09:35:33,067 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:35:33,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 109 [2022-11-20 09:35:33,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:33,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:35:33,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 76 [2022-11-20 09:35:33,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,249 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:35:33,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 49 [2022-11-20 09:35:33,404 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:35:33,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 160 treesize of output 144 [2022-11-20 09:35:33,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 09:35:33,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 39 [2022-11-20 09:35:33,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:33,702 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:35:33,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:35:33,717 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-20 09:35:33,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 73 treesize of output 66 [2022-11-20 09:35:34,278 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 09:35:34,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 45 [2022-11-20 09:35:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:34,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:38,182 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse33 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse32 (* .cse33 8)) (.cse18 (<= .cse33 2147483647)) (.cse31 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse0 (<= .cse31 2147483647)) (.cse1 (not .cse18)) (.cse11 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse17 (+ .cse32 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse19 (* 8 .cse31))) (and (or (not .cse0) (let ((.cse2 (+ 2 (select .cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse19))))) (and (or .cse1 (forall ((v_ArrVal_587 Int)) (or (not (<= .cse2 v_ArrVal_587)) (= (let ((.cse9 (store .cse10 .cse11 v_ArrVal_587))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse9))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse6 (select .cse4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse4 .cse5 (+ .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse6 .cse7))))) 7)))) (or (forall ((v_ArrVal_587 Int)) (or (not (<= .cse2 v_ArrVal_587)) (= 7 (let ((.cse16 (store .cse10 .cse17 v_ArrVal_587))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse16))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse12 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse13 .cse5 (+ .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse14 .cse15)))))))) .cse18)))) (or .cse0 (let ((.cse25 (+ (select .cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse19)) 2))) (and (or .cse1 (forall ((v_ArrVal_587 Int)) (or (= (let ((.cse24 (store .cse10 .cse11 v_ArrVal_587))) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse24))) (let ((.cse21 (select .cse20 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse22 (select .cse21 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse23 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse20 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse21 .cse5 (+ .cse22 .cse23))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse22 .cse23))))) 7) (not (<= .cse25 v_ArrVal_587))))) (or .cse18 (forall ((v_ArrVal_587 Int)) (or (= 7 (let ((.cse30 (store .cse10 .cse17 v_ArrVal_587))) (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse30))) (let ((.cse27 (select .cse26 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse28 (select .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse29 (select .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse26 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse27 .cse5 (+ .cse28 .cse29))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8) .cse28 .cse29)))))) (not (<= .cse25 v_ArrVal_587)))))))))))) is different from false [2022-11-20 09:36:03,538 WARN L233 SmtUtils]: Spent 19.87s on a formula simplification. DAG size of input: 79 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:36:06,038 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse55 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse54 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse20 (<= .cse54 2147483647)) (.cse44 (<= .cse55 2147483647)) (.cse53 (* .cse55 8)) (.cse52 (* .cse54 8)) (.cse51 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse30 (<= .cse51 2147483647)) (.cse18 (+ .cse52 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse15 (+ .cse53 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse16 (not .cse44)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ .cse53 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse27 (+ .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse21 (not .cse20)) (.cse17 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse29 (* 8 .cse51))) (and (or (let ((.cse28 (select .cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse29)))) (let ((.cse19 (+ .cse28 2)) (.cse9 (+ .cse28 4))) (and (or (let ((.cse7 (store .cse17 .cse18 .cse19))) (and (forall ((v_ArrVal_587 Int)) (or (= 7 (let ((.cse6 (store .cse7 .cse8 v_ArrVal_587))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse6))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse2 .cse3 (+ .cse0 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse4)))))) (not (<= .cse9 v_ArrVal_587)))) (or (forall ((v_ArrVal_587 Int)) (or (= 7 (let ((.cse14 (store .cse7 .cse15 v_ArrVal_587))) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14))) (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse12 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse13 (select .cse14 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse10 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse11 .cse3 (+ .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse12 .cse13)))))) (not (<= .cse9 v_ArrVal_587)))) .cse16))) .cse20) (or .cse21 (forall ((v_ArrVal_587 Int)) (or (= (let ((.cse26 (store (store .cse17 .cse27 .cse19) .cse15 v_ArrVal_587))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26))) (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse24 (select .cse26 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse25 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse22 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse23 .cse3 (+ .cse24 .cse25))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse24 .cse25))))) 7) (not (<= .cse9 v_ArrVal_587)))))))) .cse30) (or (not .cse30) (let ((.cse50 (select .cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse29)))) (let ((.cse31 (+ 4 .cse50)) (.cse37 (+ 2 .cse50))) (and (or (forall ((v_ArrVal_587 Int)) (or (not (<= .cse31 v_ArrVal_587)) (= 7 (let ((.cse36 (store (store .cse17 .cse18 .cse37) .cse8 v_ArrVal_587))) (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse36))) (let ((.cse33 (select .cse32 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse34 (select .cse33 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse35 (select .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse32 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse33 .cse3 (+ .cse34 .cse35))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5) .cse34 .cse35)))))))) .cse20) (or (let ((.cse43 (store .cse17 .cse27 .cse37))) (and (or (forall ((v_ArrVal_587 Int)) (or (not (<= .cse31 v_ArrVal_587)) (= 7 (let ((.cse42 (store .cse43 .cse15 v_ArrVal_587))) (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse42))) (let ((.cse41 (select .cse40 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse38 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse39 (select .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse38 .cse39 (select (select (store .cse40 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse41 .cse3 (+ .cse38 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))))))))) .cse16) (or .cse44 (forall ((v_ArrVal_587 Int)) (or (not (<= .cse31 v_ArrVal_587)) (= 7 (let ((.cse49 (store .cse43 .cse8 v_ArrVal_587))) (let ((.cse47 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse49))) (let ((.cse48 (select .cse47 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse45 (select .cse48 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse46 (select .cse49 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse45 .cse46 (select (select (store .cse47 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse48 .cse3 (+ .cse45 .cse46))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5)))))))))))) .cse21))))))))) is different from false [2022-11-20 09:36:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 09:36:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:06,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776161014] [2022-11-20 09:36:06,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:36:06,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732324783] [2022-11-20 09:36:06,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732324783] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:06,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:06,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-20 09:36:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094682238] [2022-11-20 09:36:06,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:06,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 09:36:06,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:06,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 09:36:06,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=543, Unknown=3, NotChecked=98, Total=756 [2022-11-20 09:36:06,258 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:09,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:09,472 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2022-11-20 09:36:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 09:36:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 09:36:09,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:09,474 INFO L225 Difference]: With dead ends: 61 [2022-11-20 09:36:09,474 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 09:36:09,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=185, Invalid=876, Unknown=3, NotChecked=126, Total=1190 [2022-11-20 09:36:09,475 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:09,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 136 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 185 Invalid, 0 Unknown, 98 Unchecked, 0.7s Time] [2022-11-20 09:36:09,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 09:36:09,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-20 09:36:09,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:09,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-20 09:36:09,483 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 28 [2022-11-20 09:36:09,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:09,483 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-20 09:36:09,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 28 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:09,484 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-20 09:36:09,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:36:09,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:09,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:09,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:09,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:36:09,693 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:09,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:09,694 INFO L85 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 6 times [2022-11-20 09:36:09,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:09,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868882441] [2022-11-20 09:36:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:09,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:09,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:36:09,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467195962] [2022-11-20 09:36:09,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:36:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:09,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:09,719 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:09,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 09:36:10,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-20 09:36:10,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:36:10,163 WARN L261 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 77 conjunts are in the unsatisfiable core [2022-11-20 09:36:10,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:10,292 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:36:10,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:36:10,300 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 09:36:10,344 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-20 09:36:10,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-20 09:36:10,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 6 [2022-11-20 09:36:10,402 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 8 treesize of output 7 [2022-11-20 09:36:10,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 79 [2022-11-20 09:36:10,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:10,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 3 [2022-11-20 09:36:10,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 09:36:10,568 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 09:36:10,702 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:10,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 200 treesize of output 188 [2022-11-20 09:36:10,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:10,714 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2022-11-20 09:36:10,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:10,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:10,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:10,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:10,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:10,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 204 [2022-11-20 09:36:10,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:10,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 47 [2022-11-20 09:36:11,062 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:11,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 71 [2022-11-20 09:36:11,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 119 [2022-11-20 09:36:11,262 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:11,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 71 [2022-11-20 09:36:11,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 119 [2022-11-20 09:36:11,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 24 [2022-11-20 09:36:11,595 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:11,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 152 treesize of output 136 [2022-11-20 09:36:11,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:11,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-11-20 09:36:11,854 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:11,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 92 treesize of output 80 [2022-11-20 09:36:11,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:11,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-20 09:36:12,088 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:12,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 92 treesize of output 80 [2022-11-20 09:36:12,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-20 09:36:12,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:12,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 42 [2022-11-20 09:36:12,762 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-20 09:36:12,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 37 [2022-11-20 09:36:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:12,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:16,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:16,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868882441] [2022-11-20 09:36:16,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:36:16,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467195962] [2022-11-20 09:36:16,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467195962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:16,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:16,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 43 [2022-11-20 09:36:16,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046688458] [2022-11-20 09:36:16,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:16,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-20 09:36:16,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:16,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-20 09:36:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=1474, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 09:36:16,621 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:20,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:20,861 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2022-11-20 09:36:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-20 09:36:20,862 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 09:36:20,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:20,863 INFO L225 Difference]: With dead ends: 76 [2022-11-20 09:36:20,863 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 09:36:20,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=731, Invalid=3301, Unknown=0, NotChecked=0, Total=4032 [2022-11-20 09:36:20,865 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 64 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:20,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 81 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 144 Invalid, 0 Unknown, 210 Unchecked, 0.3s Time] [2022-11-20 09:36:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 09:36:20,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2022-11-20 09:36:20,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2022-11-20 09:36:20,886 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 28 [2022-11-20 09:36:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:20,886 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2022-11-20 09:36:20,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2022-11-20 09:36:20,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:36:20,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:20,888 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:20,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 09:36:21,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 09:36:21,096 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:21,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 7 times [2022-11-20 09:36:21,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:21,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512254471] [2022-11-20 09:36:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:21,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:21,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:36:21,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547803524] [2022-11-20 09:36:21,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:36:21,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:21,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:21,122 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:21,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 09:36:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:21,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 09:36:21,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:22,046 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 09:36:22,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,056 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 14 [2022-11-20 09:36:22,063 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 8 treesize of output 7 [2022-11-20 09:36:22,094 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 09:36:22,147 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 09:36:22,191 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 09:36:22,243 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 09:36:22,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:36:22,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:22,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-20 09:36:22,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:36:22,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:22,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-20 09:36:22,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 57 treesize of output 50 [2022-11-20 09:36:22,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:36:22,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-20 09:36:22,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:22,634 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 21 treesize of output 20 [2022-11-20 09:36:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:22,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 09:36:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:36:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512254471] [2022-11-20 09:36:24,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:36:24,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547803524] [2022-11-20 09:36:24,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547803524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:36:24,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:36:24,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2022-11-20 09:36:24,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833209409] [2022-11-20 09:36:24,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:36:24,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 09:36:24,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:36:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 09:36:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=444, Unknown=3, NotChecked=0, Total=600 [2022-11-20 09:36:24,110 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:36:25,560 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2022-11-20 09:36:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:36:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-20 09:36:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:36:25,561 INFO L225 Difference]: With dead ends: 85 [2022-11-20 09:36:25,561 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 09:36:25,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=437, Invalid=1538, Unknown=5, NotChecked=0, Total=1980 [2022-11-20 09:36:25,563 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:36:25,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 106 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-11-20 09:36:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 09:36:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2022-11-20 09:36:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 68 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2022-11-20 09:36:25,582 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2022-11-20 09:36:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:36:25,583 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2022-11-20 09:36:25,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2022-11-20 09:36:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:36:25,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:36:25,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:36:25,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 09:36:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 09:36:25,792 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:36:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:36:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 7 times [2022-11-20 09:36:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:36:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251223166] [2022-11-20 09:36:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:36:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:36:25,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:36:25,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657479646] [2022-11-20 09:36:25,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:36:25,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:36:25,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:36:25,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:36:25,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 09:36:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:36:26,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 09:36:26,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:36:26,220 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 09:36:26,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,230 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:36:26,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:36:26,242 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 8 treesize of output 7 [2022-11-20 09:36:26,250 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 8 treesize of output 7 [2022-11-20 09:36:26,323 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:26,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 109 [2022-11-20 09:36:26,329 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:26,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:36:26,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 32 [2022-11-20 09:36:26,515 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:26,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 126 treesize of output 116 [2022-11-20 09:36:26,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:26,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 185 [2022-11-20 09:36:26,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,668 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:36:26,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:36:26,809 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:26,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 160 treesize of output 144 [2022-11-20 09:36:26,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:26,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:26,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 09:36:27,107 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:36:27,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 270 treesize of output 244 [2022-11-20 09:36:27,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 235 [2022-11-20 09:36:27,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:27,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:36:27,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:36:27,490 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 09:36:27,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 80 [2022-11-20 09:36:28,089 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 09:36:28,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 45 [2022-11-20 09:36:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:36:28,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:36:46,888 WARN L233 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 139 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:37:14,060 WARN L233 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:37:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:14,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:37:14,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251223166] [2022-11-20 09:37:14,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:37:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657479646] [2022-11-20 09:37:14,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657479646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:37:14,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:37:14,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2022-11-20 09:37:14,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653943043] [2022-11-20 09:37:14,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:37:14,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 09:37:14,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:37:14,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 09:37:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1017, Unknown=2, NotChecked=0, Total=1190 [2022-11-20 09:37:14,075 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:37:22,056 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2022-11-20 09:37:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 09:37:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 09:37:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:37:22,057 INFO L225 Difference]: With dead ends: 101 [2022-11-20 09:37:22,058 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 09:37:22,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=237, Invalid=1401, Unknown=2, NotChecked=0, Total=1640 [2022-11-20 09:37:22,059 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:37:22,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 119 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 82 Unchecked, 0.2s Time] [2022-11-20 09:37:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 09:37:22,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 82. [2022-11-20 09:37:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 81 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2022-11-20 09:37:22,089 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 32 [2022-11-20 09:37:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:37:22,090 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2022-11-20 09:37:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2022-11-20 09:37:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:37:22,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:37:22,092 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:22,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-20 09:37:22,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:22,300 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:37:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:37:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 8 times [2022-11-20 09:37:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:37:22,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577983010] [2022-11-20 09:37:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:37:22,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:37:22,325 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:37:22,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210237766] [2022-11-20 09:37:22,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:37:22,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:37:22,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:37:22,327 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:37:22,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 09:37:23,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:37:23,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:37:23,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-20 09:37:23,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:37:23,402 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-20 09:37:23,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 09:37:23,408 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-20 09:37:23,448 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-20 09:37:23,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-20 09:37:23,474 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 5 [2022-11-20 09:37:23,480 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 09:37:23,514 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 8 treesize of output 7 [2022-11-20 09:37:23,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 51 [2022-11-20 09:37:23,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:23,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 3 [2022-11-20 09:37:23,630 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 09:37:23,639 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 09:37:23,765 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:23,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 64 treesize of output 60 [2022-11-20 09:37:23,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:23,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:23,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:37:23,903 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:23,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 64 treesize of output 60 [2022-11-20 09:37:23,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:23,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:23,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:37:24,038 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:24,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 64 treesize of output 60 [2022-11-20 09:37:24,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-20 09:37:24,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,141 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:37:24,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-20 09:37:24,271 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:24,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 139 treesize of output 127 [2022-11-20 09:37:24,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:37:24,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-11-20 09:37:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 32 [2022-11-20 09:37:24,545 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:24,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 99 treesize of output 91 [2022-11-20 09:37:24,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 157 [2022-11-20 09:37:24,714 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:37:24,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 71 [2022-11-20 09:37:24,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-20 09:37:24,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:37:24,895 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:37:24,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-20 09:37:25,202 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 09:37:25,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 52 treesize of output 32 [2022-11-20 09:37:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:37:25,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:38:23,701 WARN L233 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 120 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:38:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:38:23,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:38:23,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577983010] [2022-11-20 09:38:23,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:38:23,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210237766] [2022-11-20 09:38:23,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210237766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:38:23,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:38:23,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22] total 35 [2022-11-20 09:38:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166252371] [2022-11-20 09:38:23,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:38:23,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 09:38:23,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:38:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 09:38:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=997, Unknown=10, NotChecked=0, Total=1190 [2022-11-20 09:38:23,715 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:38:28,652 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2022-11-20 09:38:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 09:38:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-20 09:38:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:38:28,654 INFO L225 Difference]: With dead ends: 139 [2022-11-20 09:38:28,654 INFO L226 Difference]: Without dead ends: 137 [2022-11-20 09:38:28,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 62.4s TimeCoverageRelationStatistics Valid=242, Invalid=1308, Unknown=10, NotChecked=0, Total=1560 [2022-11-20 09:38:28,655 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 09:38:28,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 80 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2022-11-20 09:38:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-20 09:38:28,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 102. [2022-11-20 09:38:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 101 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2022-11-20 09:38:28,688 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 32 [2022-11-20 09:38:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:38:28,688 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2022-11-20 09:38:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 35 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:38:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2022-11-20 09:38:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:38:28,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:38:28,690 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:38:28,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 09:38:28,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:38:28,897 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:38:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:38:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash -831401164, now seen corresponding path program 9 times [2022-11-20 09:38:28,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:38:28,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656955021] [2022-11-20 09:38:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:38:28,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:38:28,912 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:38:28,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882265152] [2022-11-20 09:38:28,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:38:28,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:38:28,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:38:28,914 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:38:28,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 09:38:29,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 09:38:29,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:38:29,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-20 09:38:29,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:38:29,709 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 09:38:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:29,716 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:38:29,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:38:29,726 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 8 treesize of output 7 [2022-11-20 09:38:29,734 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 8 treesize of output 7 [2022-11-20 09:38:29,811 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:38:29,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 109 [2022-11-20 09:38:29,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:29,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:29,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:29,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:29,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:38:29,848 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:38:30,058 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:38:30,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 224 treesize of output 208 [2022-11-20 09:38:30,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 203 [2022-11-20 09:38:30,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 116 [2022-11-20 09:38:30,352 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 09:38:30,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 98 treesize of output 90 [2022-11-20 09:38:30,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,390 INFO L321 Elim1Store]: treesize reduction 89, result has 1.1 percent of original size [2022-11-20 09:38:30,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 119 [2022-11-20 09:38:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:30,506 INFO L321 Elim1Store]: treesize reduction 82, result has 37.9 percent of original size [2022-11-20 09:38:30,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 76 [2022-11-20 09:38:31,462 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:38:31,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 214 treesize of output 192 [2022-11-20 09:38:31,511 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:31,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:31,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:31,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:31,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 09:38:31,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:31,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:31,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 118 [2022-11-20 09:38:32,053 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:38:32,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 233 treesize of output 205 [2022-11-20 09:38:32,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:38:32,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 216 [2022-11-20 09:38:32,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 122 [2022-11-20 09:38:32,687 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:38:32,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 258 treesize of output 226 [2022-11-20 09:38:32,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:38:32,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 259 [2022-11-20 09:38:34,117 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-20 09:38:34,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 51 [2022-11-20 09:38:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:38:34,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:38:52,031 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:39:01,235 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:39:03,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:39:03,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:39:03,888 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-20 09:39:03,889 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 3 case distinctions, treesize of input 1494 treesize of output 1 [2022-11-20 09:39:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:39:03,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:39:03,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656955021] [2022-11-20 09:39:03,894 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:39:03,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882265152] [2022-11-20 09:39:03,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882265152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:39:03,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:39:03,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2022-11-20 09:39:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356803509] [2022-11-20 09:39:03,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:39:03,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 09:39:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:39:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 09:39:03,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=1847, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 09:39:03,897 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:39:54,646 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification that was a NOOP. DAG size: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:40:05,059 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification that was a NOOP. DAG size: 110 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:40:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:40:18,516 INFO L93 Difference]: Finished difference Result 139 states and 162 transitions. [2022-11-20 09:40:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-20 09:40:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 09:40:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:40:18,517 INFO L225 Difference]: With dead ends: 139 [2022-11-20 09:40:18,518 INFO L226 Difference]: Without dead ends: 137 [2022-11-20 09:40:18,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 96.0s TimeCoverageRelationStatistics Valid=862, Invalid=4245, Unknown=5, NotChecked=0, Total=5112 [2022-11-20 09:40:18,521 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:40:18,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 150 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 161 Invalid, 0 Unknown, 100 Unchecked, 5.5s Time] [2022-11-20 09:40:18,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-20 09:40:18,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2022-11-20 09:40:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 118 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2022-11-20 09:40:18,563 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 36 [2022-11-20 09:40:18,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:40:18,563 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2022-11-20 09:40:18,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:40:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2022-11-20 09:40:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:40:18,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:40:18,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:40:18,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 09:40:18,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:40:18,765 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:40:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:40:18,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1157467270, now seen corresponding path program 10 times [2022-11-20 09:40:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:40:18,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095370543] [2022-11-20 09:40:18,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:40:18,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:40:18,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:40:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649651795] [2022-11-20 09:40:18,787 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:40:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:40:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:40:18,789 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:40:18,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 09:40:19,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:40:19,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:40:19,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-20 09:40:19,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:40:19,879 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 09:40:19,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:19,888 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 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-20 09:40:19,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-20 09:40:19,895 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 8 treesize of output 7 [2022-11-20 09:40:19,902 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 8 treesize of output 7 [2022-11-20 09:40:19,962 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:40:19,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 109 [2022-11-20 09:40:19,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:40:19,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:19,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:19,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-20 09:40:20,102 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:40:20,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 71 [2022-11-20 09:40:20,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 119 [2022-11-20 09:40:20,135 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-20 09:40:20,218 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:40:20,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 79 treesize of output 71 [2022-11-20 09:40:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 119 [2022-11-20 09:40:20,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 31 [2022-11-20 09:40:20,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,321 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 09:40:20,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 44 [2022-11-20 09:40:20,435 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:40:20,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 177 treesize of output 161 [2022-11-20 09:40:20,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:40:20,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-20 09:40:20,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 49 [2022-11-20 09:40:20,724 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:40:20,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 217 treesize of output 195 [2022-11-20 09:40:20,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 235 [2022-11-20 09:40:20,963 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 09:40:20,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 97 [2022-11-20 09:40:20,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:20,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 146 [2022-11-20 09:40:21,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 63 [2022-11-20 09:40:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,202 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 09:40:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 09:40:21,209 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 09:40:21,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 70 [2022-11-20 09:40:21,779 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-20 09:40:21,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 42 [2022-11-20 09:40:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:40:21,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:40:53,726 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse43 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse44 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse1 (<= .cse44 2147483647)) (.cse41 (* 8 .cse43)) (.cse42 (* .cse44 8)) (.cse26 (<= .cse43 2147483647)) (.cse40 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse0 (<= .cse40 2147483647)) (.cse13 (not .cse26)) (.cse11 (+ .cse42 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse12 (+ .cse41 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse19 (+ .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse20 (+ .cse41 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (not .cse1)) (.cse28 (* .cse40 8))) (and (or (not .cse0) (let ((.cse10 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|))) (and (or .cse1 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse8 (store (store (store .cse9 .cse10 v_ArrVal_1001) .cse11 v_ArrVal_1002) .cse12 v_ArrVal_1004))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse8))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse5 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (select .cse3 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse2 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse3 .cse4 (+ .cse5 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse5 .cse6)))))))) (or (and (or .cse13 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse18 (store (store (store .cse9 .cse10 v_ArrVal_1001) .cse19 v_ArrVal_1002) .cse20 v_ArrVal_1004))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse18))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse17 (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse14 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse15 .cse4 (+ .cse16 .cse17))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7) .cse16 .cse17)))))))) (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= (let ((.cse25 (store (store (store .cse9 .cse10 v_ArrVal_1001) .cse19 v_ArrVal_1002) .cse12 v_ArrVal_1004))) (let ((.cse23 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse25))) (let ((.cse24 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse21 (select .cse25 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse21 .cse22 (select (select (store .cse23 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse24 .cse4 (+ .cse21 .cse22))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))) 7)) .cse26)) .cse27)))) (or .cse0 (let ((.cse34 (+ .cse28 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) (and (or .cse1 (and .cse13 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= (let ((.cse33 (store (store (store .cse9 .cse34 v_ArrVal_1001) .cse11 v_ArrVal_1002) .cse12 v_ArrVal_1004))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse33))) (let ((.cse32 (select .cse31 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse29 (select .cse32 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse30 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse29 .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse32 .cse4 (+ .cse29 .cse30))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))) 7)))) (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse39 (store (store (store .cse9 .cse34 v_ArrVal_1001) .cse19 v_ArrVal_1002) .cse20 v_ArrVal_1004))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse39))) (let ((.cse38 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse35 (select .cse38 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse36 (select .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse35 .cse36 (select (select (store .cse37 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse38 .cse4 (+ .cse35 .cse36))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7)))))))) .cse27)))))))) is different from false [2022-11-20 09:41:22,653 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 125 DAG size of output: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:41:26,707 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse72 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse53 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse71 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse70 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse69 (* .cse70 8)) (.cse68 (* .cse71 8)) (.cse67 (* 8 .cse53)) (.cse42 (<= .cse72 2147483647)) (.cse66 (* .cse72 8)) (.cse22 (<= .cse71 2147483647)) (.cse14 (<= .cse70 2147483647)) (.cse65 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse34 (<= .cse65 2147483647)) (.cse0 (not .cse14)) (.cse21 (not .cse22)) (.cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse66)) (.cse31 (not .cse42)) (.cse12 (+ .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (+ .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse69 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (+ .cse69 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse28 (+ .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse29 (+ .cse67 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse30 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse66)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse33 (* 8 .cse65))) (and (or (let ((.cse10 (+ (select .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse33)) 2))) (and (or .cse0 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse7 (store (store (store (store .cse8 .cse9 .cse10) .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse13 v_ArrVal_1004))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse2 .cse3 (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse4 .cse5)))))))) (or .cse14 (let ((.cse20 (store .cse8 .cse32 .cse10))) (and (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse19 (store (store (store .cse20 .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse13 v_ArrVal_1004))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse19))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse18 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse16 .cse3 (+ .cse17 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse17 .cse18))))))) .cse21) (or .cse22 (and (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse27 (store (store (store .cse20 .cse28 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27))) (let ((.cse25 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse23 (select .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse26 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse23 (select (select (store .cse24 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse25 .cse3 (+ .cse23 .cse26))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse26))))))) .cse31))))))) .cse34) (or (not .cse34) (let ((.cse59 (+ 2 (select .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse33))))) (and (or .cse0 (let ((.cse41 (store .cse8 .cse9 .cse59))) (and (or .cse21 (let ((.cse35 (<= .cse53 2147483647))) (and (or (not .cse35) (and (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse40 (store (store (store .cse41 .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse13 v_ArrVal_1004))) (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse40))) (let ((.cse37 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse38 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse39 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse37 .cse3 (+ .cse38 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse38 .cse39))))))) .cse31) (or .cse42 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse47 (store (store (store .cse41 .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse47))) (let ((.cse46 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse43 (select .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse44 (select .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse43 .cse44 (select (select (store .cse45 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse46 .cse3 (+ .cse43 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))))))) (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= (let ((.cse52 (store (store (store .cse41 .cse11 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse49 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52))) (let ((.cse50 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse48 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse51 (select .cse50 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse48 (select (select (store .cse49 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse50 .cse3 (+ .cse48 .cse51))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse51))))) 7)) .cse35)))) (or .cse22 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse58 (store (store (store .cse41 .cse28 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse58))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse56 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse57 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse54 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse55 .cse3 (+ .cse56 .cse57))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse56 .cse57))))))))))) (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse64 (store (store (store (store .cse8 .cse32 .cse59) .cse28 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse60 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse64))) (let ((.cse61 (select .cse60 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse62 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse63 (select .cse61 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse60 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse61 .cse3 (+ .cse62 .cse63))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse62 .cse63))))))) .cse14)))))))) is different from false [2022-11-20 09:41:28,715 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse72 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse53 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse71 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse70 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse69 (* .cse70 8)) (.cse68 (* .cse71 8)) (.cse67 (* 8 .cse53)) (.cse42 (<= .cse72 2147483647)) (.cse66 (* .cse72 8)) (.cse22 (<= .cse71 2147483647)) (.cse14 (<= .cse70 2147483647)) (.cse65 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse34 (<= .cse65 2147483647)) (.cse0 (not .cse14)) (.cse21 (not .cse22)) (.cse13 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse66)) (.cse31 (not .cse42)) (.cse12 (+ .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse11 (+ .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse69 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse3 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse32 (+ .cse69 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse28 (+ .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse29 (+ .cse67 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse30 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse66)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse33 (* 8 .cse65))) (and (or (let ((.cse10 (+ (select .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse33)) 2))) (and (or .cse0 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse7 (store (store (store (store .cse8 .cse9 .cse10) .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse13 v_ArrVal_1004))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse7))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse4 (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse2 .cse3 (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse4 .cse5)))))))) (or .cse14 (let ((.cse20 (store .cse8 .cse32 .cse10))) (and (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse19 (store (store (store .cse20 .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse13 v_ArrVal_1004))) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse19))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse18 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse15 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse16 .cse3 (+ .cse17 .cse18))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse17 .cse18))))))) .cse21) (or .cse22 (and (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse27 (store (store (store .cse20 .cse28 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse24 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse27))) (let ((.cse25 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse23 (select .cse25 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse26 (select .cse27 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse23 (select (select (store .cse24 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse25 .cse3 (+ .cse23 .cse26))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse26))))))) .cse31))))))) .cse34) (or (not .cse34) (let ((.cse59 (+ 2 (select .cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse33))))) (and (or .cse0 (let ((.cse41 (store .cse8 .cse9 .cse59))) (and (or .cse21 (let ((.cse35 (<= .cse53 2147483647))) (and (or (not .cse35) (and (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse40 (store (store (store .cse41 .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse13 v_ArrVal_1004))) (let ((.cse36 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse40))) (let ((.cse37 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse38 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse39 (select .cse37 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse36 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse37 .cse3 (+ .cse38 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse38 .cse39))))))) .cse31) (or .cse42 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse47 (store (store (store .cse41 .cse11 v_ArrVal_1001) .cse12 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse47))) (let ((.cse46 (select .cse45 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse43 (select .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse44 (select .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse43 .cse44 (select (select (store .cse45 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse46 .cse3 (+ .cse43 .cse44))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))))))))))) (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= (let ((.cse52 (store (store (store .cse41 .cse11 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse49 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52))) (let ((.cse50 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse48 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse51 (select .cse50 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ .cse48 (select (select (store .cse49 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse50 .cse3 (+ .cse48 .cse51))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse51))))) 7)) .cse35)))) (or .cse22 (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse58 (store (store (store .cse41 .cse28 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse58))) (let ((.cse55 (select .cse54 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse56 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse57 (select .cse55 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse54 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse55 .cse3 (+ .cse56 .cse57))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse56 .cse57))))))))))) (or (forall ((v_ArrVal_1002 Int) (v_ArrVal_1001 Int) (v_ArrVal_1004 Int)) (= 7 (let ((.cse64 (store (store (store (store .cse8 .cse32 .cse59) .cse28 v_ArrVal_1001) .cse29 v_ArrVal_1002) .cse30 v_ArrVal_1004))) (let ((.cse60 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse64))) (let ((.cse61 (select .cse60 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse62 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse63 (select .cse61 |c_ULTIMATE.start_main_~b~0#1.offset|))) (+ (select (select (store .cse60 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse61 .cse3 (+ .cse62 .cse63))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse62 .cse63))))))) .cse14)))))))) is different from true [2022-11-20 09:41:28,727 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-20 09:41:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:41:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095370543] [2022-11-20 09:41:28,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:41:28,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649651795] [2022-11-20 09:41:28,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649651795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:41:28,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:41:28,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23] total 39 [2022-11-20 09:41:28,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587068078] [2022-11-20 09:41:28,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:41:28,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-20 09:41:28,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:41:28,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-20 09:41:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1142, Unknown=10, NotChecked=142, Total=1482 [2022-11-20 09:41:28,730 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:39,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:39,045 INFO L93 Difference]: Finished difference Result 174 states and 197 transitions. [2022-11-20 09:41:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 09:41:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 09:41:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:39,047 INFO L225 Difference]: With dead ends: 174 [2022-11-20 09:41:39,047 INFO L226 Difference]: Without dead ends: 172 [2022-11-20 09:41:39,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 73.6s TimeCoverageRelationStatistics Valid=287, Invalid=1690, Unknown=11, NotChecked=174, Total=2162 [2022-11-20 09:41:39,048 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 241 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:39,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 140 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 110 Invalid, 0 Unknown, 241 Unchecked, 0.3s Time] [2022-11-20 09:41:39,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-20 09:41:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 130. [2022-11-20 09:41:39,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.178294573643411) internal successors, (152), 129 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2022-11-20 09:41:39,103 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 36 [2022-11-20 09:41:39,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:39,103 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2022-11-20 09:41:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 39 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2022-11-20 09:41:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:41:39,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:39,104 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:39,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:39,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:39,311 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:39,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1823667066, now seen corresponding path program 8 times [2022-11-20 09:41:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:41:39,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822607701] [2022-11-20 09:41:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:39,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:41:39,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:41:39,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1323627793] [2022-11-20 09:41:39,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:41:39,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:39,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:41:39,337 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:41:39,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 09:41:39,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:41:39,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:41:39,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 09:41:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:41:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 52 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:41:39,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:41:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 52 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 09:41:39,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:41:39,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822607701] [2022-11-20 09:41:39,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 09:41:39,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323627793] [2022-11-20 09:41:39,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323627793] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:41:39,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 09:41:39,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-20 09:41:39,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656427251] [2022-11-20 09:41:39,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 09:41:39,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:41:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:41:39,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:41:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:41:39,714 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:40,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:41:40,380 INFO L93 Difference]: Finished difference Result 271 states and 294 transitions. [2022-11-20 09:41:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 09:41:40,381 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-20 09:41:40,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:41:40,382 INFO L225 Difference]: With dead ends: 271 [2022-11-20 09:41:40,382 INFO L226 Difference]: Without dead ends: 200 [2022-11-20 09:41:40,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 09:41:40,383 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 213 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:41:40,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 144 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 09:41:40,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-20 09:41:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 131. [2022-11-20 09:41:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1384615384615384) internal successors, (148), 130 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 148 transitions. [2022-11-20 09:41:40,422 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 148 transitions. Word has length 36 [2022-11-20 09:41:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:41:40,422 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 148 transitions. [2022-11-20 09:41:40,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 18 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:41:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 148 transitions. [2022-11-20 09:41:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 09:41:40,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:41:40,423 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:41:40,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 09:41:40,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:40,629 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:41:40,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:41:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1226631488, now seen corresponding path program 11 times [2022-11-20 09:41:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:41:40,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899008502] [2022-11-20 09:41:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:41:40,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:41:40,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 09:41:40,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063450453] [2022-11-20 09:41:40,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:41:40,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:41:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:41:40,651 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:41:40,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfc7595b-5421-4184-95e7-702b1b8d728b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process