./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array30_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array30_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8 --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 bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c --- 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-e04fb08 [2022-11-16 12:30:28,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:30:28,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:30:28,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:30:28,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:30:28,196 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:30:28,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:30:28,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:30:28,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:30:28,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:30:28,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:30:28,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:30:28,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:30:28,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:30:28,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:30:28,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:30:28,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:30:28,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:30:28,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:30:28,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:30:28,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:30:28,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:30:28,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:30:28,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:30:28,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:30:28,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:30:28,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:30:28,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:30:28,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:30:28,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:30:28,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:30:28,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:30:28,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:30:28,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:30:28,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:30:28,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:30:28,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:30:28,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:30:28,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:30:28,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:30:28,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:30:28,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:30:28,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:30:28,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:30:28,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:30:28,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:30:28,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:30:28,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:30:28,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:30:28,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:30:28,323 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:30:28,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:30:28,324 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:30:28,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:30:28,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:30:28,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:30:28,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:30:28,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:30:28,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:30:28,325 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:30:28,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:30:28,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:30:28,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:30:28,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:30:28,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:30:28,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:30:28,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:30:28,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:30:28,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:30:28,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:30:28,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:30:28,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:30:28,328 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:30:28,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:30:28,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:30:28,340 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_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9fb5599b361d63a40d668c035ff2f49b2f61ec342dc99fdd2f9d975d29190c [2022-11-16 12:30:28,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:30:28,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:30:28,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:30:28,625 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:30:28,626 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:30:28,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-patterns/array30_pattern.c [2022-11-16 12:30:28,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/data/e156b02fd/85e95632ea5e43f0b918a81cdfec5811/FLAGda0964c1c [2022-11-16 12:30:29,224 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:30:29,225 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/sv-benchmarks/c/array-patterns/array30_pattern.c [2022-11-16 12:30:29,232 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/data/e156b02fd/85e95632ea5e43f0b918a81cdfec5811/FLAGda0964c1c [2022-11-16 12:30:29,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/data/e156b02fd/85e95632ea5e43f0b918a81cdfec5811 [2022-11-16 12:30:29,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:30:29,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:30:29,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:30:29,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:30:29,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:30:29,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:30:29" (1/1) ... [2022-11-16 12:30:29,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130b91a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:29, skipping insertion in model container [2022-11-16 12:30:29,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:30:29" (1/1) ... [2022-11-16 12:30:29,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:30:29,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:30:29,901 WARN L229 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_dba31571-656f-4e47-8f0f-c759808c444e/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2022-11-16 12:30:29,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:30:29,938 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:30:29,954 WARN L229 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_dba31571-656f-4e47-8f0f-c759808c444e/sv-benchmarks/c/array-patterns/array30_pattern.c[1189,1202] [2022-11-16 12:30:29,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:30:30,000 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:30:30,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30 WrapperNode [2022-11-16 12:30:30,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:30:30,004 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:30:30,004 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:30:30,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:30:30,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,057 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 80 [2022-11-16 12:30:30,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:30:30,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:30:30,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:30:30,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:30:30,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,098 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:30:30,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:30:30,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:30:30,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:30:30,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (1/1) ... [2022-11-16 12:30:30,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:30:30,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:30,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:30:30,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:30:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:30:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:30:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:30:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:30:30,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:30:30,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:30:30,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:30:30,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:30:30,295 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:30:30,297 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:30:30,510 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:30:30,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:30:30,516 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:30:30,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:30:30 BoogieIcfgContainer [2022-11-16 12:30:30,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:30:30,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:30:30,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:30:30,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:30:30,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:30:29" (1/3) ... [2022-11-16 12:30:30,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecb4c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:30:30, skipping insertion in model container [2022-11-16 12:30:30,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:30:30" (2/3) ... [2022-11-16 12:30:30,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ecb4c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:30:30, skipping insertion in model container [2022-11-16 12:30:30,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:30:30" (3/3) ... [2022-11-16 12:30:30,544 INFO L112 eAbstractionObserver]: Analyzing ICFG array30_pattern.c [2022-11-16 12:30:30,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:30:30,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:30:30,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:30:30,659 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;@efd4abb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:30:30,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:30:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) [2022-11-16 12:30:30,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:30:30,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:30,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:30,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -409725857, now seen corresponding path program 1 times [2022-11-16 12:30:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:30,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079410274] [2022-11-16 12:30:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:30,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:30,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079410274] [2022-11-16 12:30:30,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:30:30,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677670622] [2022-11-16 12:30:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:30,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:30,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:30,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:30:30,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:30:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:30,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:30:30,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:30,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:30,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677670622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:30,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:30,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:30:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617992433] [2022-11-16 12:30:30,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:30,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:30:30,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:31,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:30:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:30:31,027 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:31,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:31,049 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2022-11-16 12:30:31,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:30:31,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-16 12:30:31,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:31,060 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:30:31,061 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 12:30:31,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:30:31,069 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2022-11-16 12:30:31,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:30:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 12:30:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 12:30:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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) [2022-11-16 12:30:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-16 12:30:31,113 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2022-11-16 12:30:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:31,114 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-16 12:30:31,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-16 12:30:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:30:31,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:31,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:31,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:31,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:30:31,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1934801258, now seen corresponding path program 1 times [2022-11-16 12:30:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:31,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093248613] [2022-11-16 12:30:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:31,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:31,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:30:31,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982659315] [2022-11-16 12:30:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:31,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:31,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:31,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:30:31,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:30:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:30:31,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:31,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:31,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093248613] [2022-11-16 12:30:31,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:30:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982659315] [2022-11-16 12:30:31,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982659315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:31,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:31,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:30:31,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535358334] [2022-11-16 12:30:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:30:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:30:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:30:31,593 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:31,702 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-11-16 12:30:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:30:31,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-16 12:30:31,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:31,704 INFO L225 Difference]: With dead ends: 38 [2022-11-16 12:30:31,704 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 12:30:31,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:30:31,706 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 78 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:31,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:30:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 12:30:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2022-11-16 12:30:31,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-16 12:30:31,714 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 10 [2022-11-16 12:30:31,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:31,714 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-16 12:30:31,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-16 12:30:31,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:30:31,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:31,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:31,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:31,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:31,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 761451258, now seen corresponding path program 1 times [2022-11-16 12:30:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906585644] [2022-11-16 12:30:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:31,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:31,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:30:31,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207956186] [2022-11-16 12:30:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:31,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:31,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:30:31,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:30:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:32,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:30:32,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:30:32,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:32,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:32,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906585644] [2022-11-16 12:30:32,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:30:32,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207956186] [2022-11-16 12:30:32,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207956186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:32,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:32,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:30:32,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706116433] [2022-11-16 12:30:32,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:32,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:30:32,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:32,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:30:32,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:30:32,071 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-11-16 12:30:32,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:32,130 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-16 12:30:32,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:30:32,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 [2022-11-16 12:30:32,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:32,131 INFO L225 Difference]: With dead ends: 43 [2022-11-16 12:30:32,132 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 12:30:32,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:30:32,133 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:32,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:30:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 12:30:32,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-16 12:30:32,141 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) [2022-11-16 12:30:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-16 12:30:32,141 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2022-11-16 12:30:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:32,142 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-16 12:30:32,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-11-16 12:30:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-16 12:30:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:30:32,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:32,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:32,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:32,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:32,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:32,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1879431543, now seen corresponding path program 1 times [2022-11-16 12:30:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:32,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762687361] [2022-11-16 12:30:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:32,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:32,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:30:32,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232518567] [2022-11-16 12:30:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:32,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:32,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:32,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:30:32,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:30:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:32,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:30:32,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:30:32,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:32,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:32,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762687361] [2022-11-16 12:30:32,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:30:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232518567] [2022-11-16 12:30:32,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232518567] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:32,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:32,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:30:32,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68973289] [2022-11-16 12:30:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:32,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:30:32,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:32,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:30:32,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:30:32,510 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2022-11-16 12:30:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:32,624 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2022-11-16 12:30:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:30:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-16 12:30:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:32,629 INFO L225 Difference]: With dead ends: 75 [2022-11-16 12:30:32,631 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 12:30:32,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:30:32,634 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:32,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:30:32,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 12:30:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 25. [2022-11-16 12:30:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 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) [2022-11-16 12:30:32,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-16 12:30:32,659 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2022-11-16 12:30:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:32,659 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-16 12:30:32,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2022-11-16 12:30:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-16 12:30:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:30:32,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:32,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:32,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:30:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:32,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:30:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 858363189, now seen corresponding path program 1 times [2022-11-16 12:30:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:30:32,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358713282] [2022-11-16 12:30:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:30:32,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:30:32,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [430657103] [2022-11-16 12:30:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:32,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:30:32,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:30:32,894 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:30:32,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:30:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:32,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-16 12:30:32,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:33,356 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 45 treesize of output 40 [2022-11-16 12:30:33,368 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 38 treesize of output 34 [2022-11-16 12:30:33,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 28 [2022-11-16 12:30:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:33,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:34,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-16 12:30:34,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:34,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 121 [2022-11-16 12:30:34,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:34,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 416 treesize of output 415 [2022-11-16 12:30:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:30:43,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:30:43,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358713282] [2022-11-16 12:30:43,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:30:43,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430657103] [2022-11-16 12:30:43,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430657103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:43,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:43,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-16 12:30:43,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083683260] [2022-11-16 12:30:43,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:43,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:30:43,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:30:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:30:43,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:30:43,372 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:30:45,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:30:47,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-16 12:30:56,539 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 97 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:31:26,505 WARN L233 SmtUtils]: Spent 28.78s on a formula simplification. DAG size of input: 81 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:31:37,496 WARN L233 SmtUtils]: Spent 9.96s on a formula simplification. DAG size of input: 68 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:32:52,440 WARN L233 SmtUtils]: Spent 1.24m on a formula simplification. DAG size of input: 93 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:35:16,111 WARN L233 SmtUtils]: Spent 2.29m on a formula simplification. DAG size of input: 99 DAG size of output: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:35:19,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-16 12:35:43,053 WARN L233 SmtUtils]: Spent 23.24s on a formula simplification. DAG size of input: 83 DAG size of output: 78 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:36:16,788 WARN L233 SmtUtils]: Spent 33.42s on a formula simplification. DAG size of input: 98 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:36:45,036 WARN L233 SmtUtils]: Spent 19.67s on a formula simplification. DAG size of input: 85 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:37:04,617 WARN L233 SmtUtils]: Spent 17.67s on a formula simplification. DAG size of input: 103 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:37:21,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:21,016 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2022-11-16 12:37:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 12:37:21,017 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-16 12:37:21,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:21,019 INFO L225 Difference]: With dead ends: 155 [2022-11-16 12:37:21,020 INFO L226 Difference]: Without dead ends: 149 [2022-11-16 12:37:21,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2665 ImplicationChecksByTransitivity, 390.4s TimeCoverageRelationStatistics Valid=1590, Invalid=6597, Unknown=3, NotChecked=0, Total=8190 [2022-11-16 12:37:21,025 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 386 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 87 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:21,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 104 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 643 Invalid, 3 Unknown, 0 Unchecked, 10.6s Time] [2022-11-16 12:37:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-16 12:37:21,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 58. [2022-11-16 12:37:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 57 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2022-11-16 12:37:21,058 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 22 [2022-11-16 12:37:21,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:21,059 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2022-11-16 12:37:21,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:21,059 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2022-11-16 12:37:21,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 12:37:21,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:21,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:21,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:21,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:21,261 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 413561143, now seen corresponding path program 2 times [2022-11-16 12:37:21,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:21,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267255975] [2022-11-16 12:37:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:21,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:21,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:21,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205431402] [2022-11-16 12:37:21,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:37:21,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:21,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:21,300 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:21,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:37:21,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:37:21,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:21,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:37:21,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:21,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:21,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267255975] [2022-11-16 12:37:21,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:21,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205431402] [2022-11-16 12:37:21,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205431402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:21,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:21,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:37:21,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87087022] [2022-11-16 12:37:21,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:37:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:37:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:37:21,521 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:21,731 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2022-11-16 12:37:21,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:37:21,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2022-11-16 12:37:21,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:21,757 INFO L225 Difference]: With dead ends: 143 [2022-11-16 12:37:21,757 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 12:37:21,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:37:21,759 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 94 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:21,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 65 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:21,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 12:37:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 74. [2022-11-16 12:37:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.273972602739726) internal successors, (93), 73 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2022-11-16 12:37:21,799 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 24 [2022-11-16 12:37:21,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:21,799 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2022-11-16 12:37:21,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2022-11-16 12:37:21,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:37:21,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:21,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:21,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:22,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1333246064, now seen corresponding path program 1 times [2022-11-16 12:37:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947450502] [2022-11-16 12:37:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:22,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:22,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892354093] [2022-11-16 12:37:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:22,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:22,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:22,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:37:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:22,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:37:22,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:37:22,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:37:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947450502] [2022-11-16 12:37:22,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:22,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892354093] [2022-11-16 12:37:22,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892354093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:22,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:22,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-16 12:37:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123806183] [2022-11-16 12:37:22,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:37:22,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:37:22,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:37:22,239 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:22,514 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2022-11-16 12:37:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:37:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-16 12:37:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:22,516 INFO L225 Difference]: With dead ends: 121 [2022-11-16 12:37:22,516 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 12:37:22,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:37:22,518 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 62 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:22,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 57 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:37:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 12:37:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 81. [2022-11-16 12:37:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2625) internal successors, (101), 80 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2022-11-16 12:37:22,568 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 26 [2022-11-16 12:37:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:22,569 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2022-11-16 12:37:22,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2022-11-16 12:37:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:37:22,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:22,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:22,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 12:37:22,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:37:22,777 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:22,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1250996973, now seen corresponding path program 3 times [2022-11-16 12:37:22,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:22,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127042] [2022-11-16 12:37:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:22,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:22,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352097302] [2022-11-16 12:37:22,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:37:22,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:22,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:22,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:22,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:37:22,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:37:22,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:37:22,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:37:22,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:37:23,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:23,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127042] [2022-11-16 12:37:23,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:23,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352097302] [2022-11-16 12:37:23,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352097302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:23,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:23,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:37:23,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794642310] [2022-11-16 12:37:23,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:23,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:37:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:37:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:37:23,020 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2022-11-16 12:37:23,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:23,205 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2022-11-16 12:37:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:37:23,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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 27 [2022-11-16 12:37:23,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:23,207 INFO L225 Difference]: With dead ends: 137 [2022-11-16 12:37:23,207 INFO L226 Difference]: Without dead ends: 121 [2022-11-16 12:37:23,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:37:23,209 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:23,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 52 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-16 12:37:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 83. [2022-11-16 12:37:23,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 82 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2022-11-16 12:37:23,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 27 [2022-11-16 12:37:23,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:23,277 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2022-11-16 12:37:23,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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) [2022-11-16 12:37:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2022-11-16 12:37:23,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 12:37:23,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:23,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:23,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:23,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:23,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash -378872012, now seen corresponding path program 2 times [2022-11-16 12:37:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241274226] [2022-11-16 12:37:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:23,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:23,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600513555] [2022-11-16 12:37:23,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:37:23,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:23,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:23,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:23,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:37:23,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:37:23,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:23,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:37:23,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:37:23,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:23,725 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:37:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241274226] [2022-11-16 12:37:23,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:23,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600513555] [2022-11-16 12:37:23,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600513555] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:23,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:23,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-16 12:37:23,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976424383] [2022-11-16 12:37:23,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:23,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 12:37:23,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:23,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 12:37:23,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:37:23,728 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) [2022-11-16 12:37:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:23,947 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2022-11-16 12:37:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:37:23,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) Word has length 29 [2022-11-16 12:37:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:23,948 INFO L225 Difference]: With dead ends: 115 [2022-11-16 12:37:23,948 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 12:37:23,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:37:23,950 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 83 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:23,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 34 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 12:37:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 61. [2022-11-16 12:37:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2022-11-16 12:37:23,982 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 29 [2022-11-16 12:37:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:23,983 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2022-11-16 12:37:23,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 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) [2022-11-16 12:37:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2022-11-16 12:37:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 12:37:24,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:24,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:24,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 12:37:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:37:24,207 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:24,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1285246055, now seen corresponding path program 3 times [2022-11-16 12:37:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:24,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700304529] [2022-11-16 12:37:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:24,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:24,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574919171] [2022-11-16 12:37:24,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:37:24,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:24,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:24,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:24,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:37:24,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:37:24,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:24,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:37:24,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:37:24,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:37:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700304529] [2022-11-16 12:37:24,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574919171] [2022-11-16 12:37:24,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574919171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:24,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:24,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-16 12:37:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967846327] [2022-11-16 12:37:24,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:37:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:37:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:37:24,568 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) [2022-11-16 12:37:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:24,807 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2022-11-16 12:37:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:37:24,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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 33 [2022-11-16 12:37:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:24,808 INFO L225 Difference]: With dead ends: 74 [2022-11-16 12:37:24,808 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 12:37:24,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:37:24,809 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 56 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:24,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 35 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:24,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 12:37:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 49. [2022-11-16 12:37:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2022-11-16 12:37:24,832 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 33 [2022-11-16 12:37:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2022-11-16 12:37:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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) [2022-11-16 12:37:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2022-11-16 12:37:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:37:24,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:24,833 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:24,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:25,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:25,040 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:25,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2069220910, now seen corresponding path program 4 times [2022-11-16 12:37:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:25,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630296845] [2022-11-16 12:37:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:25,054 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:25,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1065062499] [2022-11-16 12:37:25,054 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:37:25,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:25,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:25,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:25,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:37:25,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:37:25,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:25,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:37:25,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 12:37:25,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 12:37:25,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:25,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630296845] [2022-11-16 12:37:25,235 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:25,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065062499] [2022-11-16 12:37:25,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065062499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:25,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:25,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-16 12:37:25,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310293646] [2022-11-16 12:37:25,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:37:25,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:25,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:37:25,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:37:25,238 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2022-11-16 12:37:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:25,427 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2022-11-16 12:37:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:37:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) Word has length 44 [2022-11-16 12:37:25,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:25,428 INFO L225 Difference]: With dead ends: 57 [2022-11-16 12:37:25,428 INFO L226 Difference]: Without dead ends: 51 [2022-11-16 12:37:25,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:37:25,429 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:25,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 42 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:25,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-16 12:37:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2022-11-16 12:37:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-11-16 12:37:25,447 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2022-11-16 12:37:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:25,447 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-11-16 12:37:25,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 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) [2022-11-16 12:37:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-11-16 12:37:25,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:37:25,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:25,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:25,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:25,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:25,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:25,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:25,654 INFO L85 PathProgramCache]: Analyzing trace with hash 208820884, now seen corresponding path program 5 times [2022-11-16 12:37:25,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:25,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795789209] [2022-11-16 12:37:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:25,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:25,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:25,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685625088] [2022-11-16 12:37:25,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:37:25,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:25,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:25,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:37:27,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-11-16 12:37:27,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:27,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 12:37:27,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 12:37:28,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 12:37:28,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795789209] [2022-11-16 12:37:28,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685625088] [2022-11-16 12:37:28,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685625088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:28,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:28,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-16 12:37:28,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002644947] [2022-11-16 12:37:28,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:28,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:37:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:28,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:37:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:37:28,509 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:29,616 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2022-11-16 12:37:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:37:29,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-16 12:37:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:29,618 INFO L225 Difference]: With dead ends: 178 [2022-11-16 12:37:29,618 INFO L226 Difference]: Without dead ends: 141 [2022-11-16 12:37:29,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:37:29,620 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 124 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:29,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 113 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:37:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-16 12:37:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 69. [2022-11-16 12:37:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 68 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2022-11-16 12:37:29,668 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 46 [2022-11-16 12:37:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:29,668 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2022-11-16 12:37:29,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2022-11-16 12:37:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:37:29,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:29,673 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:29,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:29,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:37:29,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash -185545902, now seen corresponding path program 6 times [2022-11-16 12:37:29,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:29,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931270521] [2022-11-16 12:37:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:29,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:29,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:29,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207967729] [2022-11-16 12:37:29,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:37:29,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:29,894 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:29,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:37:30,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-11-16 12:37:30,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:37:30,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:37:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:37:30,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:37:30,721 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 12:37:30,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:30,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931270521] [2022-11-16 12:37:30,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:37:30,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207967729] [2022-11-16 12:37:30,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207967729] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:37:30,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:37:30,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 19 [2022-11-16 12:37:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108744077] [2022-11-16 12:37:30,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:37:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:37:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:37:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:37:30,724 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 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) [2022-11-16 12:37:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:32,414 INFO L93 Difference]: Finished difference Result 227 states and 278 transitions. [2022-11-16 12:37:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 12:37:32,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 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 46 [2022-11-16 12:37:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:32,416 INFO L225 Difference]: With dead ends: 227 [2022-11-16 12:37:32,416 INFO L226 Difference]: Without dead ends: 199 [2022-11-16 12:37:32,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=507, Invalid=1655, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 12:37:32,422 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 223 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:32,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 127 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:37:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-16 12:37:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 119. [2022-11-16 12:37:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.2457627118644068) internal successors, (147), 118 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2022-11-16 12:37:32,529 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 46 [2022-11-16 12:37:32,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:32,529 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2022-11-16 12:37:32,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 19 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) [2022-11-16 12:37:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2022-11-16 12:37:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:37:32,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:32,532 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:32,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:32,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:37:32,737 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:37:32,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -44997292, now seen corresponding path program 7 times [2022-11-16 12:37:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:32,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157671474] [2022-11-16 12:37:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:32,756 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:37:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149371779] [2022-11-16 12:37:32,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:37:32,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:37:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:32,764 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:37:32,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dba31571-656f-4e47-8f0f-c759808c444e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:37:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:33,011 WARN L261 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-16 12:37:33,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:33,282 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 77 treesize of output 72 [2022-11-16 12:37:33,289 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 27 treesize of output 24 [2022-11-16 12:37:33,298 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 12:37:33,605 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 96 treesize of output 89 [2022-11-16 12:37:33,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:33,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:33,615 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:37:33,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 163 [2022-11-16 12:37:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:33,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:37:33,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:37:33,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 124 treesize of output 30 [2022-11-16 12:37:34,203 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 124 treesize of output 115 [2022-11-16 12:37:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,221 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 114 treesize of output 212 [2022-11-16 12:37:34,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:37:34,261 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 156 treesize of output 59 [2022-11-16 12:37:34,799 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 80 treesize of output 69 [2022-11-16 12:37:34,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,817 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 68 treesize of output 145 [2022-11-16 12:37:34,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:34,907 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 94 treesize of output 53 [2022-11-16 12:37:36,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:36,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:36,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:36,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:36,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:37:36,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 43 [2022-11-16 12:37:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:36,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:38:07,708 WARN L233 SmtUtils]: Spent 14.46s on a formula simplification. DAG size of input: 99 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:38:22,318 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:38:40,595 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:38:45,415 WARN L855 $PredicateComparison]: unable to prove that (or (not (< |c_ULTIMATE.start_diff_~idx2#1| |c_ULTIMATE.start_diff_~idx1#1|)) (let ((.cse28 (mod c_~ARR_SIZE~0 4294967296)) (.cse0 (mod (+ |c_ULTIMATE.start_main_~column~0#1| 1) 65536)) (.cse9 (mod |c_ULTIMATE.start_main_~row~0#1| 65536))) (let ((.cse11 (<= .cse9 32767)) (.cse10 (not (<= .cse0 32767))) (.cse1 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (.cse4 (* |c_ULTIMATE.start_main_~sum~0#1| 3)) (.cse5 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse15 (* |c_ULTIMATE.start_main_~column~0#1| 4)) (.cse17 (+ (* (- 1) |c_ULTIMATE.start_diff_~idx2#1|) |c_ULTIMATE.start_diff_~idx1#1|)) (.cse18 (* .cse28 4)) (.cse19 (<= .cse28 2147483647))) (and (or (let ((.cse14 (* |c_ULTIMATE.start_main_~row~0#1| (+ (- 17179869184) .cse18)))) (let ((.cse3 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse18)) (.cse6 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse18 (- 17179869180))) (.cse7 (store .cse16 (+ .cse14 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse15) .cse17)) (.cse8 (+ .cse14 |c_ULTIMATE.start_main_~#array~0#1.offset| 4 .cse15))) (and (or (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse0 |v_ULTIMATE.start_diff_~idx2#1_23|) (= .cse1 (let ((.cse2 (store .cse7 .cse8 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* 3 (select .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (* 3 (select .cse2 .cse3)) .cse4 c_~ARR_SIZE~0 (* (select .cse2 .cse5) 3) (* (select .cse2 .cse6) 3)))) (< |v_ULTIMATE.start_diff_~idx1#1_23| .cse9) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|))) .cse10) (or .cse11 (and (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse0 (+ |v_ULTIMATE.start_diff_~idx2#1_23| 65536)) (= .cse1 (let ((.cse12 (store .cse7 .cse8 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* 3 (select .cse12 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (* 3 (select .cse12 .cse3)) .cse4 c_~ARR_SIZE~0 (* (select .cse12 .cse5) 3) (* (select .cse12 .cse6) 3)))) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (< (+ |v_ULTIMATE.start_diff_~idx1#1_23| 65536) .cse9))) (or (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse0 |v_ULTIMATE.start_diff_~idx2#1_23|) (= .cse1 (let ((.cse13 (store .cse7 .cse8 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* 3 (select .cse13 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (* 3 (select .cse13 .cse3)) .cse4 c_~ARR_SIZE~0 (* (select .cse13 .cse5) 3) (* (select .cse13 .cse6) 3)))) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (< (+ |v_ULTIMATE.start_diff_~idx1#1_23| 65536) .cse9))) .cse10)))))) .cse19) (or (let ((.cse27 (* |c_ULTIMATE.start_main_~row~0#1| .cse18))) (let ((.cse21 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse18)) (.cse22 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse18 4)) (.cse23 (store .cse16 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse27 .cse15) .cse17)) (.cse24 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse27 4 .cse15))) (and (or .cse11 (and (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse0 (+ |v_ULTIMATE.start_diff_~idx2#1_23| 65536)) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (< (+ |v_ULTIMATE.start_diff_~idx1#1_23| 65536) .cse9) (= .cse1 (let ((.cse20 (store .cse23 .cse24 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ .cse4 c_~ARR_SIZE~0 (* (select .cse20 .cse5) 3) (* 3 (select .cse20 .cse21)) (* 3 (select .cse20 .cse22)) (* 3 (select .cse20 |c_ULTIMATE.start_main_~#array~0#1.offset|))))))) (or (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse0 |v_ULTIMATE.start_diff_~idx2#1_23|) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (< (+ |v_ULTIMATE.start_diff_~idx1#1_23| 65536) .cse9) (= .cse1 (let ((.cse25 (store .cse23 .cse24 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ .cse4 c_~ARR_SIZE~0 (* (select .cse25 .cse5) 3) (* 3 (select .cse25 .cse21)) (* 3 (select .cse25 .cse22)) (* 3 (select .cse25 |c_ULTIMATE.start_main_~#array~0#1.offset|))))))) .cse10))) (or .cse10 (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse0 |v_ULTIMATE.start_diff_~idx2#1_23|) (< |v_ULTIMATE.start_diff_~idx1#1_23| .cse9) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (= .cse1 (let ((.cse26 (store .cse23 .cse24 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ .cse4 c_~ARR_SIZE~0 (* (select .cse26 .cse5) 3) (* 3 (select .cse26 .cse21)) (* 3 (select .cse26 .cse22)) (* 3 (select .cse26 |c_ULTIMATE.start_main_~#array~0#1.offset|))))))))))) (not .cse19)))))) is different from true [2022-11-16 12:39:10,440 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse35 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse33 (* .cse35 4)) (.cse0 (mod |c_ULTIMATE.start_main_~column~0#1| 65536))) (let ((.cse4 (mod |c_ULTIMATE.start_main_~row~0#1| 65536)) (.cse22 (* (- 1) .cse0)) (.cse34 (* |c_ULTIMATE.start_main_~row~0#1| (+ (- 17179869184) .cse33))) (.cse30 (* |c_ULTIMATE.start_main_~row~0#1| .cse33)) (.cse31 (* |c_ULTIMATE.start_main_~column~0#1| 4))) (let ((.cse21 (<= .cse35 2147483647)) (.cse12 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse30 .cse31)) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse19 (+ .cse34 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse31)) (.cse32 (+ .cse4 .cse22))) (let ((.cse1 (not (<= .cse4 32767))) (.cse17 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse33 (- 17179869180))) (.cse18 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse33)) (.cse27 (store .cse11 .cse19 .cse32)) (.cse20 (+ .cse34 |c_ULTIMATE.start_main_~#array~0#1.offset| 4 .cse31)) (.cse3 (mod (+ |c_ULTIMATE.start_main_~column~0#1| 1) 65536)) (.cse5 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0)) (.cse7 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse33 4)) (.cse9 (* |c_ULTIMATE.start_main_~sum~0#1| 3)) (.cse10 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse33)) (.cse8 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse25 (store .cse11 .cse12 .cse32)) (.cse14 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse30 4 .cse31)) (.cse2 (not .cse21)) (.cse23 (not (< .cse0 .cse4)))) (and (or (<= .cse0 32767) (and (or .cse1 (let ((.cse13 (+ .cse4 65536 .cse22)) (.cse15 (not (<= .cse3 32767)))) (and (or .cse2 (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse3 |v_ULTIMATE.start_diff_~idx2#1_23|) (< |v_ULTIMATE.start_diff_~idx1#1_23| .cse4) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (= .cse5 (let ((.cse6 (store (store .cse11 .cse12 .cse13) .cse14 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* (select .cse6 .cse7) 3) (* (select .cse6 .cse8) 3) .cse9 c_~ARR_SIZE~0 (* (select .cse6 |c_ULTIMATE.start_main_~#array~0#1.offset|) 3) (* (select .cse6 .cse10) 3)))))) .cse15) (or (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse3 |v_ULTIMATE.start_diff_~idx2#1_23|) (< |v_ULTIMATE.start_diff_~idx1#1_23| .cse4) (= .cse5 (let ((.cse16 (store (store .cse11 .cse19 .cse13) .cse20 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* (select .cse16 |c_ULTIMATE.start_main_~#array~0#1.offset|) 3) .cse9 c_~ARR_SIZE~0 (* (select .cse16 .cse8) 3) (* 3 (select .cse16 .cse17)) (* 3 (select .cse16 .cse18))))) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|))) .cse21 .cse15)))) (or .cse23 (and (or (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse3 (+ |v_ULTIMATE.start_diff_~idx2#1_23| 65536)) (= .cse5 (let ((.cse24 (store .cse25 .cse14 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* (select .cse24 |c_ULTIMATE.start_main_~#array~0#1.offset|) 3) (* 3 (select .cse24 .cse7)) .cse9 c_~ARR_SIZE~0 (* 3 (select .cse24 .cse10)) (* (select .cse24 .cse8) 3)))) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (< (+ |v_ULTIMATE.start_diff_~idx1#1_23| 65536) .cse4))) .cse2) (or .cse21 (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse3 (+ |v_ULTIMATE.start_diff_~idx2#1_23| 65536)) (= .cse5 (let ((.cse26 (store .cse27 .cse20 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* (select .cse26 .cse17) 3) (* 3 (select .cse26 |c_ULTIMATE.start_main_~#array~0#1.offset|)) .cse9 c_~ARR_SIZE~0 (* (select .cse26 .cse8) 3) (* (select .cse26 .cse18) 3)))) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|) (< (+ |v_ULTIMATE.start_diff_~idx1#1_23| 65536) .cse4)))))))) (or .cse1 (and (or .cse21 (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse3 |v_ULTIMATE.start_diff_~idx2#1_23|) (= .cse5 (let ((.cse28 (store .cse27 .cse20 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* (select .cse28 .cse17) 3) (* 3 (select .cse28 |c_ULTIMATE.start_main_~#array~0#1.offset|)) .cse9 c_~ARR_SIZE~0 (* (select .cse28 .cse8) 3) (* (select .cse28 .cse18) 3)))) (< |v_ULTIMATE.start_diff_~idx1#1_23| .cse4) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|)))) (or (forall ((|v_ULTIMATE.start_diff_~idx2#1_23| Int) (|v_ULTIMATE.start_diff_~idx1#1_23| Int)) (or (< .cse3 |v_ULTIMATE.start_diff_~idx2#1_23|) (< |v_ULTIMATE.start_diff_~idx1#1_23| .cse4) (= .cse5 (let ((.cse29 (store .cse25 .cse14 (+ |v_ULTIMATE.start_diff_~idx2#1_23| (* |v_ULTIMATE.start_diff_~idx1#1_23| (- 1)))))) (+ (* (select .cse29 |c_ULTIMATE.start_main_~#array~0#1.offset|) 3) (* 3 (select .cse29 .cse7)) .cse9 c_~ARR_SIZE~0 (* 3 (select .cse29 .cse10)) (* (select .cse29 .cse8) 3)))) (< |v_ULTIMATE.start_diff_~idx2#1_23| |v_ULTIMATE.start_diff_~idx1#1_23|))) .cse2)) .cse23))))))) is different from true [2022-11-16 12:39:54,657 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:41:25,152 WARN L233 SmtUtils]: Spent 27.67s on a formula simplification. DAG size of input: 98 DAG size of output: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:41:53,774 WARN L233 SmtUtils]: Spent 8.76s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:41:53,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-16 12:41:53,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:41:53,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 121 [2022-11-16 12:42:03,003 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (mod ~ARR_SIZE~0 4294967296))) (= (+ (* |ULTIMATE.start_main_~column~0#1| 4) (* (* .cse0 |ULTIMATE.start_main_~row~0#1|) 4) 4) (* .cse0 4))) [2022-11-16 12:42:03,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:03,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:03,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:03,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:05,677 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (mod ~ARR_SIZE~0 4294967296))) (= (* .cse0 4) (+ (* |ULTIMATE.start_main_~column~0#1| 4) (* (* .cse0 |ULTIMATE.start_main_~row~0#1|) 4)))) [2022-11-16 12:42:05,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:05,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:07,711 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (mod ~ARR_SIZE~0 4294967296))) (= (+ (* .cse0 4) 4) (+ (* |ULTIMATE.start_main_~column~0#1| 4) (* (* .cse0 |ULTIMATE.start_main_~row~0#1|) 4)))) [2022-11-16 12:42:09,718 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (mod ~ARR_SIZE~0 4294967296))) (= (+ (* .cse0 4) (* 17179869184 |ULTIMATE.start_main_~row~0#1|) 4) (+ (* |ULTIMATE.start_main_~column~0#1| 4) (* (* .cse0 |ULTIMATE.start_main_~row~0#1|) 4)))) [2022-11-16 12:42:10,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:42:12,341 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (mod ~ARR_SIZE~0 4294967296))) (= (+ (* |ULTIMATE.start_main_~column~0#1| 4) (* (* .cse0 |ULTIMATE.start_main_~row~0#1|) 4)) (+ (* .cse0 4) (* 17179869184 |ULTIMATE.start_main_~row~0#1|)))) [2022-11-16 12:42:12,510 INFO L217 Elim1Store]: Index analysis took 6809 ms