./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifeqn2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifeqn2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro --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 cb71614531ba069deddebdade1f57f90be50d3de3732c63efbb92b9f6b8c62e1 --- 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-8393723 [2022-11-18 20:12:40,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:12:40,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:12:40,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:12:40,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:12:40,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:12:40,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:12:40,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:12:40,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:12:40,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:12:40,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:12:40,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:12:40,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:12:40,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:12:40,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:12:40,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:12:40,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:12:40,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:12:40,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:12:40,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:12:40,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:12:40,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:12:40,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:12:40,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:12:40,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:12:40,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:12:40,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:12:40,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:12:40,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:12:40,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:12:40,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:12:40,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:12:40,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:12:40,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:12:40,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:12:40,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:12:40,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:12:40,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:12:40,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:12:40,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:12:40,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:12:40,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:12:40,527 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:12:40,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:12:40,527 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:12:40,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:12:40,528 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:12:40,529 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:12:40,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:12:40,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:12:40,530 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:12:40,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:12:40,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:12:40,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:12:40,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:12:40,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:12:40,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:12:40,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:12:40,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:12:40,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:12:40,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:12:40,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:12:40,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:12:40,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:12:40,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:12:40,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:12:40,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:12:40,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:12:40,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:12:40,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:12:40,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:12:40,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:12:40,535 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:12:40,535 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:12:40,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:12:40,536 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_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb71614531ba069deddebdade1f57f90be50d3de3732c63efbb92b9f6b8c62e1 [2022-11-18 20:12:40,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:12:40,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:12:40,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:12:40,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:12:40,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:12:40,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/ifeqn2.c [2022-11-18 20:12:41,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/data/067fa36be/d964738ee39f46a783d303678f86d770/FLAG23a3c83e8 [2022-11-18 20:12:41,717 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:12:41,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/sv-benchmarks/c/array-fpi/ifeqn2.c [2022-11-18 20:12:41,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/data/067fa36be/d964738ee39f46a783d303678f86d770/FLAG23a3c83e8 [2022-11-18 20:12:42,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/data/067fa36be/d964738ee39f46a783d303678f86d770 [2022-11-18 20:12:42,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:12:42,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:12:42,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:12:42,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:12:42,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:12:42,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184df153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42, skipping insertion in model container [2022-11-18 20:12:42,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:12:42,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:12:42,340 WARN L234 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_95caef62-e77d-4251-96c5-b67986d3f01a/sv-benchmarks/c/array-fpi/ifeqn2.c[589,602] [2022-11-18 20:12:42,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:12:42,376 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:12:42,391 WARN L234 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_95caef62-e77d-4251-96c5-b67986d3f01a/sv-benchmarks/c/array-fpi/ifeqn2.c[589,602] [2022-11-18 20:12:42,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:12:42,418 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:12:42,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42 WrapperNode [2022-11-18 20:12:42,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:12:42,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:12:42,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:12:42,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:12:42,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,458 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-11-18 20:12:42,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:12:42,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:12:42,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:12:42,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:12:42,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:12:42,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:12:42,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:12:42,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:12:42,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (1/1) ... [2022-11-18 20:12:42,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:12:42,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:42,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:12:42,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:12:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:12:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:12:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:12:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:12:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:12:42,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:12:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:12:42,662 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:12:42,664 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:12:42,858 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:12:42,865 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:12:42,865 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:12:42,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:12:42 BoogieIcfgContainer [2022-11-18 20:12:42,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:12:42,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:12:42,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:12:42,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:12:42,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:12:42" (1/3) ... [2022-11-18 20:12:42,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e20b460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:12:42, skipping insertion in model container [2022-11-18 20:12:42,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:12:42" (2/3) ... [2022-11-18 20:12:42,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e20b460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:12:42, skipping insertion in model container [2022-11-18 20:12:42,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:12:42" (3/3) ... [2022-11-18 20:12:42,893 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn2.c [2022-11-18 20:12:42,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:12:42,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:12:43,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:12:43,041 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;@2c6b5b65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:12:43,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:12:43,047 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) [2022-11-18 20:12:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:12:43,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:43,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:43,058 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2022-11-18 20:12:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:43,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911045859] [2022-11-18 20:12:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:43,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:43,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:43,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911045859] [2022-11-18 20:12:43,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:12:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290216370] [2022-11-18 20:12:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:43,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:43,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:12:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:43,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:12:43,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:43,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:12:43,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290216370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:43,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:43,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:12:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657211163] [2022-11-18 20:12:43,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:43,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:12:43,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:43,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:12:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:12:43,478 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:43,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:43,493 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-11-18 20:12:43,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:12:43,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:12:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:43,511 INFO L225 Difference]: With dead ends: 42 [2022-11-18 20:12:43,511 INFO L226 Difference]: Without dead ends: 19 [2022-11-18 20:12:43,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:12:43,518 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:43,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:12:43,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-18 20:12:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-18 20:12:43,564 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) [2022-11-18 20:12:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-11-18 20:12:43,568 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2022-11-18 20:12:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:43,569 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-11-18 20:12:43,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-11-18 20:12:43,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:12:43,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:43,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:43,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:43,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:12:43,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:43,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2022-11-18 20:12:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:43,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665196400] [2022-11-18 20:12:43,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:43,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:43,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665196400] [2022-11-18 20:12:43,854 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:12:43,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794882056] [2022-11-18 20:12:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:43,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:43,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:43,865 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:43,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:12:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:43,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:12:43,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:43,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:12:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794882056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:43,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:43,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:12:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033259518] [2022-11-18 20:12:44,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:12:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:12:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:12:44,002 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:44,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:44,078 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-18 20:12:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:12:44,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:12:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:44,079 INFO L225 Difference]: With dead ends: 42 [2022-11-18 20:12:44,080 INFO L226 Difference]: Without dead ends: 31 [2022-11-18 20:12:44,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:12:44,082 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:44,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:12:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-18 20:12:44,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-11-18 20:12:44,088 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) [2022-11-18 20:12:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-18 20:12:44,089 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2022-11-18 20:12:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:44,089 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-18 20:12:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:44,090 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-18 20:12:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:12:44,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:44,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:44,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:44,297 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:44,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2022-11-18 20:12:44,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:44,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431811728] [2022-11-18 20:12:44,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:44,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:44,333 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:12:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596300654] [2022-11-18 20:12:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:44,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:44,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:44,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:44,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:12:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:44,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:12:44,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:44,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:12:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:12:44,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:12:44,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:44,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431811728] [2022-11-18 20:12:44,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:12:44,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596300654] [2022-11-18 20:12:44,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596300654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:44,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:44,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:12:44,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545451786] [2022-11-18 20:12:44,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:44,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:12:44,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:12:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:12:44,655 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-18 20:12:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:44,802 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-11-18 20:12:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:12:44,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:12:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:44,804 INFO L225 Difference]: With dead ends: 38 [2022-11-18 20:12:44,804 INFO L226 Difference]: Without dead ends: 36 [2022-11-18 20:12:44,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:12:44,806 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:44,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 70 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:12:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-18 20:12:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-18 20:12:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-18 20:12:44,814 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-11-18 20:12:44,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:44,814 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-18 20:12:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-18 20:12:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-18 20:12:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:12:44,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:44,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:44,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:45,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 20:12:45,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash -217194585, now seen corresponding path program 1 times [2022-11-18 20:12:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:45,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101516720] [2022-11-18 20:12:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:45,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:45,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101516720] [2022-11-18 20:12:45,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:12:45,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067861675] [2022-11-18 20:12:45,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:45,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:45,103 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:45,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:12:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:45,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:12:45,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:12:45,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:12:45,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067861675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:12:45,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:12:45,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:12:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674836739] [2022-11-18 20:12:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:12:45,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:12:45,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:45,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:12:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:12:45,226 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-18 20:12:45,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:45,274 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-11-18 20:12:45,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:12:45,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:12:45,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:45,276 INFO L225 Difference]: With dead ends: 55 [2022-11-18 20:12:45,276 INFO L226 Difference]: Without dead ends: 35 [2022-11-18 20:12:45,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:12:45,278 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:45,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:12:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-18 20:12:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-18 20:12:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2022-11-18 20:12:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-11-18 20:12:45,286 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2022-11-18 20:12:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:45,287 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-11-18 20:12:45,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-18 20:12:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-11-18 20:12:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:12:45,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:45,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:45,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:45,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:45,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:45,495 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2022-11-18 20:12:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:45,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754271114] [2022-11-18 20:12:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:45,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:45,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:12:45,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870698037] [2022-11-18 20:12:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:45,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:45,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:45,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:12:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:45,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:12:45,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:45,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:45,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754271114] [2022-11-18 20:12:45,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:12:45,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870698037] [2022-11-18 20:12:45,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870698037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:45,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:12:45,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 20:12:45,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328116806] [2022-11-18 20:12:45,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:45,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:12:45,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:45,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:12:45,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:12:45,810 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:46,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:46,077 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-11-18 20:12:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:12:46,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:12:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:46,083 INFO L225 Difference]: With dead ends: 70 [2022-11-18 20:12:46,084 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:12:46,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:12:46,089 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:46,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 43 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:12:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:12:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-11-18 20:12:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-11-18 20:12:46,100 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2022-11-18 20:12:46,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:46,100 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-11-18 20:12:46,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:46,101 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-11-18 20:12:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:12:46,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:46,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:46,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:46,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:46,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:46,307 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2022-11-18 20:12:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:46,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100571643] [2022-11-18 20:12:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:46,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:12:46,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047313519] [2022-11-18 20:12:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:46,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:46,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:46,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:12:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:46,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:12:46,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:46,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:12:46,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:12:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:46,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:47,136 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 21 treesize of output 19 [2022-11-18 20:12:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:12:47,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100571643] [2022-11-18 20:12:47,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:12:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047313519] [2022-11-18 20:12:47,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047313519] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:47,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:12:47,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-18 20:12:47,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643660304] [2022-11-18 20:12:47,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:47,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:12:47,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:47,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:12:47,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:12:47,183 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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) [2022-11-18 20:12:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:47,673 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2022-11-18 20:12:47,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:12:47,674 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 24 [2022-11-18 20:12:47,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:47,675 INFO L225 Difference]: With dead ends: 95 [2022-11-18 20:12:47,675 INFO L226 Difference]: Without dead ends: 75 [2022-11-18 20:12:47,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:12:47,677 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 56 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:47,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 109 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 121 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-11-18 20:12:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-18 20:12:47,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 44. [2022-11-18 20:12:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 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) [2022-11-18 20:12:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-11-18 20:12:47,706 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 24 [2022-11-18 20:12:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:47,707 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-11-18 20:12:47,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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) [2022-11-18 20:12:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-11-18 20:12:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:12:47,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:47,712 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, 1] [2022-11-18 20:12:47,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:47,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:47,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2022-11-18 20:12:47,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:47,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473508329] [2022-11-18 20:12:47,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:47,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:47,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:12:47,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036895107] [2022-11-18 20:12:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:47,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:47,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:47,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:47,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:12:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:12:48,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 20:12:48,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:48,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:12:48,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:12:48,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:48,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:12:48,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 20:12:48,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:48,585 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:12:48,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2022-11-18 20:12:48,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:48,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:12:50,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:50,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473508329] [2022-11-18 20:12:50,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:12:50,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036895107] [2022-11-18 20:12:50,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036895107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:50,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:12:50,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-11-18 20:12:50,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955687512] [2022-11-18 20:12:50,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:50,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:12:50,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:50,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:12:50,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-11-18 20:12:50,220 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:54,108 INFO L93 Difference]: Finished difference Result 163 states and 202 transitions. [2022-11-18 20:12:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:12:54,108 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:12:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:54,111 INFO L225 Difference]: With dead ends: 163 [2022-11-18 20:12:54,111 INFO L226 Difference]: Without dead ends: 151 [2022-11-18 20:12:54,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=409, Invalid=1661, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:12:54,113 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 181 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:54,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 149 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 276 Invalid, 0 Unknown, 149 Unchecked, 0.7s Time] [2022-11-18 20:12:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-18 20:12:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 99. [2022-11-18 20:12:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 98 states have internal predecessors, (125), 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) [2022-11-18 20:12:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2022-11-18 20:12:54,148 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 28 [2022-11-18 20:12:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:54,148 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2022-11-18 20:12:54,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:12:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2022-11-18 20:12:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 20:12:54,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:54,150 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:54,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:54,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:12:54,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:54,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash 877615566, now seen corresponding path program 2 times [2022-11-18 20:12:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:54,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652711979] [2022-11-18 20:12:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:54,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:54,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:12:54,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602413993] [2022-11-18 20:12:54,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:12:54,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:54,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:54,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:54,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:12:54,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:12:54,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:54,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:12:54,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:12:54,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:12:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:12:54,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652711979] [2022-11-18 20:12:54,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:12:54,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602413993] [2022-11-18 20:12:54,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602413993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:12:54,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:12:54,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 20:12:54,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991961875] [2022-11-18 20:12:54,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:12:54,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:12:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:12:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:12:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:12:54,762 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-11-18 20:12:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:12:54,989 INFO L93 Difference]: Finished difference Result 196 states and 238 transitions. [2022-11-18 20:12:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:12:54,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 20:12:54,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:12:54,991 INFO L225 Difference]: With dead ends: 196 [2022-11-18 20:12:54,991 INFO L226 Difference]: Without dead ends: 121 [2022-11-18 20:12:54,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:12:54,992 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 99 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:12:54,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 65 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:12:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-18 20:12:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 94. [2022-11-18 20:12:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 93 states have internal predecessors, (113), 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) [2022-11-18 20:12:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2022-11-18 20:12:55,013 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 32 [2022-11-18 20:12:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:12:55,013 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2022-11-18 20:12:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-11-18 20:12:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2022-11-18 20:12:55,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:12:55,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:12:55,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:12:55,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:55,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:55,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:12:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:12:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1646708229, now seen corresponding path program 3 times [2022-11-18 20:12:55,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:12:55,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763944406] [2022-11-18 20:12:55,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:12:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:12:55,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:12:55,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022538347] [2022-11-18 20:12:55,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:12:55,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:55,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:12:55,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:12:55,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:12:55,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:12:55,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:12:55,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-18 20:12:55,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:12:55,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:12:55,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:12:55,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:12:55,799 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2022-11-18 20:12:55,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2022-11-18 20:12:55,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:55,873 INFO L321 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-11-18 20:12:55,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 32 [2022-11-18 20:12:56,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 109 [2022-11-18 20:12:56,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,145 INFO L321 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2022-11-18 20:12:56,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 187 [2022-11-18 20:12:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:56,349 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-11-18 20:12:56,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 101 [2022-11-18 20:13:00,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:00,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:00,417 INFO L321 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2022-11-18 20:13:00,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 146 treesize of output 149 [2022-11-18 20:13:01,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 269 treesize of output 245 [2022-11-18 20:13:01,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:01,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:01,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:01,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:01,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:01,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-18 20:13:01,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:01,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:01,568 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 200 treesize of output 102 [2022-11-18 20:13:03,431 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:13:03,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 209 treesize of output 187 [2022-11-18 20:13:03,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 235 [2022-11-18 20:13:03,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:03,552 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 230 treesize of output 153 [2022-11-18 20:13:05,756 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:05,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:05,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:05,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:05,787 INFO L321 Elim1Store]: treesize reduction 28, result has 22.2 percent of original size [2022-11-18 20:13:05,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 102 treesize of output 47 [2022-11-18 20:13:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:05,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:14,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:14,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763944406] [2022-11-18 20:13:14,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:13:14,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022538347] [2022-11-18 20:13:14,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022538347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:13:14,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:13:14,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 45 [2022-11-18 20:13:14,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134649629] [2022-11-18 20:13:14,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:14,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:13:14,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:13:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1624, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:13:14,773 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 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) [2022-11-18 20:13:25,769 WARN L233 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:13:27,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:13:33,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:14:03,571 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 135 DAG size of output: 129 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:14:06,620 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse65 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse63 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse10 (mod .cse63 4294967296)) (.cse61 (* .cse65 8)) (.cse64 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse44 (* 8 .cse64)) (.cse31 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse27 (+ .cse61 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse28 (+ .cse61 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (* .cse10 8)) (.cse62 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse13 (<= .cse65 2147483647)) (.cse20 (+ .cse61 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse0 (< .cse62 c_~N~0)) (.cse9 (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse54 (select .cse7 .cse28)) (.cse55 (select .cse31 .cse27)) (.cse30 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse40 (<= .cse64 2147483647)) (.cse37 (< .cse63 c_~N~0)) (.cse46 (select .cse7 (+ .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse47 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse44)))) (let ((.cse38 (store .cse7 .cse28 (+ .cse46 .cse47))) (.cse4 (not .cse37)) (.cse45 (not .cse40)) (.cse36 (= 4 .cse30)) (.cse1 (store .cse7 .cse9 (+ .cse54 .cse55))) (.cse15 (+ (* 8 (mod .cse62 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse18 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse22 (+ .cse61 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse2 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (not (< 1 c_~N~0))) (.cse12 (not .cse0)) (.cse29 (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (.cse42 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse44))) (.cse57 (select .cse7 .cse20)) (.cse23 (not .cse13)) (.cse11 (* 2 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (.cse39 (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)))) (and (not (<= c_~N~0 0)) (or .cse0 (= 5 (select .cse1 .cse2)) .cse3 .cse4) (or (let ((.cse6 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 5 .cse11)) (.cse5 (<= .cse10 2147483647))) (and (or .cse5 (= .cse6 (select .cse7 (+ .cse8 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (or (= .cse6 (select .cse7 .cse9)) (not .cse5)))) .cse4) (or .cse3 .cse12 (let ((.cse19 (store .cse7 |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|))) (and (or .cse13 (= (select (let ((.cse16 (select .cse21 .cse22)) (.cse17 (select .cse19 .cse20))) (let ((.cse14 (store .cse19 .cse9 (+ .cse16 .cse17)))) (store .cse14 .cse15 (+ .cse16 .cse17 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse14) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18))))) .cse2) 5)) (or .cse23 (= (select (let ((.cse25 (select .cse19 .cse28)) (.cse26 (select .cse21 .cse27))) (let ((.cse24 (store .cse19 .cse9 (+ .cse25 .cse26)))) (store .cse24 .cse15 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18) .cse25 .cse26)))) .cse2) 5))))) .cse29) (let ((.cse32 (+ c_~N~0 4294967294))) (or (and (= (+ 4 .cse30) (select .cse31 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (* 4294967296 (div (+ 8589934589 c_~N~0) 4294967296)) .cse32)) (and (exists ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_60| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| Int)) (let ((.cse35 (* |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 4294967296))) (let ((.cse33 (+ .cse35 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71|)) (.cse34 (+ (* |aux_div_ULTIMATE.start_main_~i~0#1_60| 4294967296) .cse35 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71|))) (and (<= .cse33 6442450942) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 2147483647) (<= (+ c_~N~0 8589934590) .cse34) (<= 4294967295 .cse33) (<= 0 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71|) (= (select .cse31 (+ (* (mod (+ |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ (select .cse31 (+ (* 8 (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) (< .cse34 (+ c_~N~0 8589934591)))))) .cse36) (and (= (+ 4 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) .cse30) (<= (+ (* (div .cse32 4294967296) 4294967296) 1) c_~N~0)))) (or .cse37 (= (select .cse38 .cse2) 5) .cse3 .cse39) (or (and (or .cse40 (= 5 (select (let ((.cse43 (select .cse7 (+ (- 34359738368) .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse41 (store .cse7 .cse28 (+ .cse42 .cse43)))) (store .cse41 .cse9 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse41) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse42 .cse43)))) .cse2))) (or .cse45 (= (select (store .cse38 .cse9 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse38) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse46 .cse47)) .cse2) 5))) .cse0 .cse3 .cse4) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (let ((.cse53 (mod (+ 4294967294 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse48 (* .cse53 8)) (.cse52 (<= .cse53 2147483647))) (let ((.cse50 (not .cse52)) (.cse49 (+ (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48 (- 34359738368))) 4)) (.cse51 (+ (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48)) 4))) (or (and .cse40 (or (= .cse48 0) (= .cse44 0) .cse36) (or (and (= .cse49 .cse47) .cse50) (and (= .cse51 .cse47) .cse52))) (and (or (and .cse50 (= .cse42 .cse49)) (and (= .cse42 .cse51) .cse52)) .cse45 .cse36))))) (or (and (or (= (select (store .cse1 .cse15 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18) .cse54 .cse55)) .cse2) 5) .cse23) (or (= 5 (select (let ((.cse58 (select .cse31 .cse22))) (let ((.cse56 (store .cse7 .cse9 (+ .cse57 .cse58)))) (store .cse56 .cse15 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse56) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18) .cse57 .cse58)))) .cse2)) .cse13)) .cse3 .cse12 .cse29) (or (<= c_~N~0 2) (= 4 (select (select (let ((.cse59 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse31 .cse27 (+ .cse42 4))))) (store .cse59 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse59 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse37 (< 3 c_~N~0)) (or (let ((.cse60 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) 1 .cse11))) (and (or (= .cse60 .cse57) .cse13) (or (= .cse60 .cse54) .cse23))) .cse39) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (< |c_ULTIMATE.start_main_~i~0#1| (+ c_~N~0 1)))))))) is different from false [2022-11-18 20:15:23,797 WARN L233 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 198 DAG size of output: 178 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:15:27,258 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse66 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse64 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse10 (mod .cse64 4294967296)) (.cse62 (* .cse66 8)) (.cse65 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse44 (* 8 .cse65)) (.cse27 (+ .cse62 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse28 (+ .cse62 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (* .cse10 8)) (.cse63 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse31 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (<= .cse66 2147483647)) (.cse20 (+ .cse62 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse0 (< .cse63 c_~N~0)) (.cse9 (+ .cse8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse55 (select .cse7 .cse28)) (.cse56 (select .cse31 .cse27)) (.cse40 (<= .cse65 2147483647)) (.cse37 (< .cse64 c_~N~0)) (.cse46 (select .cse7 (+ .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|))) (.cse47 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse44)))) (let ((.cse38 (store .cse7 .cse28 (+ .cse46 .cse47))) (.cse4 (not .cse37)) (.cse45 (not .cse40)) (.cse1 (store .cse7 .cse9 (+ .cse55 .cse56))) (.cse15 (+ (* 8 (mod .cse63 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse18 (+ .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse22 (+ .cse62 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) (.cse2 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (not (< 1 c_~N~0))) (.cse12 (not .cse0)) (.cse29 (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) (.cse42 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse44))) (.cse58 (select .cse7 .cse20)) (.cse23 (not .cse13)) (.cse11 (* 2 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (.cse39 (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))) (.cse49 (= .cse44 0)) (.cse36 (= 4 .cse30))) (and (not (<= c_~N~0 0)) (or .cse0 (= 5 (select .cse1 .cse2)) .cse3 .cse4) (or (let ((.cse6 (+ (* 6 |c_ULTIMATE.start_main_~i~0#1|) 5 .cse11)) (.cse5 (<= .cse10 2147483647))) (and (or .cse5 (= .cse6 (select .cse7 (+ .cse8 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (or (= .cse6 (select .cse7 .cse9)) (not .cse5)))) .cse4) (or .cse3 .cse12 (let ((.cse19 (store .cse7 |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (let ((.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse19) |c_ULTIMATE.start_main_~a~0#1.base|))) (and (or .cse13 (= (select (let ((.cse16 (select .cse21 .cse22)) (.cse17 (select .cse19 .cse20))) (let ((.cse14 (store .cse19 .cse9 (+ .cse16 .cse17)))) (store .cse14 .cse15 (+ .cse16 .cse17 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse14) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18))))) .cse2) 5)) (or .cse23 (= (select (let ((.cse25 (select .cse19 .cse28)) (.cse26 (select .cse21 .cse27))) (let ((.cse24 (store .cse19 .cse9 (+ .cse25 .cse26)))) (store .cse24 .cse15 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18) .cse25 .cse26)))) .cse2) 5))))) .cse29) (let ((.cse32 (+ c_~N~0 4294967294))) (or (and (= (+ 4 .cse30) (select .cse31 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (<= (* 4294967296 (div (+ 8589934589 c_~N~0) 4294967296)) .cse32)) (and (exists ((|aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| Int) (|aux_div_ULTIMATE.start_main_~i~0#1_60| Int) (|aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| Int)) (let ((.cse35 (* |aux_div_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 4294967296))) (let ((.cse33 (+ .cse35 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71|)) (.cse34 (+ (* |aux_div_ULTIMATE.start_main_~i~0#1_60| 4294967296) .cse35 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71|))) (and (<= .cse33 6442450942) (<= |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 2147483647) (<= (+ c_~N~0 8589934590) .cse34) (<= 4294967295 .cse33) (<= 0 |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71|) (= (select .cse31 (+ (* (mod (+ |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 1) 4294967296) 8) |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ (select .cse31 (+ (* 8 (mod |aux_mod_aux_mod_ULTIMATE.start_main_~i~0#1_60_71| 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|)) 4)) (< .cse34 (+ c_~N~0 8589934591)))))) .cse36) (and (= (+ 4 (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) .cse30) (<= (+ (* (div .cse32 4294967296) 4294967296) 1) c_~N~0)))) (or .cse37 (= (select .cse38 .cse2) 5) .cse3 .cse39) (or (and (or .cse40 (= 5 (select (let ((.cse43 (select .cse7 (+ (- 34359738368) .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse41 (store .cse7 .cse28 (+ .cse42 .cse43)))) (store .cse41 .cse9 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse41) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse42 .cse43)))) .cse2))) (or .cse45 (= (select (store .cse38 .cse9 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse38) |c_ULTIMATE.start_main_~a~0#1.base|) .cse27) .cse46 .cse47)) .cse2) 5))) .cse0 .cse3 .cse4) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (let ((.cse54 (mod (+ 4294967294 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (let ((.cse48 (* .cse54 8)) (.cse53 (<= .cse54 2147483647))) (let ((.cse51 (not .cse53)) (.cse50 (+ (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48 (- 34359738368))) 4)) (.cse52 (+ (select .cse31 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse48)) 4))) (or (and .cse40 (or (= .cse48 0) .cse49 .cse36) (or (and (= .cse50 .cse47) .cse51) (and (= .cse52 .cse47) .cse53))) (and (or (and .cse51 (= .cse42 .cse50)) (and (= .cse42 .cse52) .cse53)) .cse45 .cse36))))) (or (and (or (= (select (store .cse1 .cse15 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse1) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18) .cse55 .cse56)) .cse2) 5) .cse23) (or (= 5 (select (let ((.cse59 (select .cse31 .cse22))) (let ((.cse57 (store .cse7 .cse9 (+ .cse58 .cse59)))) (store .cse57 .cse15 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse57) |c_ULTIMATE.start_main_~a~0#1.base|) .cse18) .cse58 .cse59)))) .cse2)) .cse13)) .cse3 .cse12 .cse29) (or (<= c_~N~0 2) (= 4 (select (select (let ((.cse60 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse31 .cse27 (+ .cse42 4))))) (store .cse60 |c_ULTIMATE.start_main_~b~0#1.base| (store (select .cse60 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse37 (< 3 c_~N~0)) (or (let ((.cse61 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) 1 .cse11))) (and (or (= .cse61 .cse58) .cse13) (or (= .cse61 .cse55) .cse23))) .cse39) (or .cse49 .cse36) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (< |c_ULTIMATE.start_main_~i~0#1| (+ c_~N~0 1)))))))) is different from false [2022-11-18 20:15:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:37,681 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2022-11-18 20:15:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 20:15:37,691 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 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 34 [2022-11-18 20:15:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:37,692 INFO L225 Difference]: With dead ends: 155 [2022-11-18 20:15:37,693 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 20:15:37,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 142.5s TimeCoverageRelationStatistics Valid=696, Invalid=3338, Unknown=6, NotChecked=250, Total=4290 [2022-11-18 20:15:37,696 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 74 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:37,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 124 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 258 Invalid, 0 Unknown, 98 Unchecked, 12.1s Time] [2022-11-18 20:15:37,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 20:15:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 140. [2022-11-18 20:15:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.2446043165467626) internal successors, (173), 139 states have internal predecessors, (173), 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) [2022-11-18 20:15:37,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 173 transitions. [2022-11-18 20:15:37,743 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 173 transitions. Word has length 34 [2022-11-18 20:15:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:37,744 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 173 transitions. [2022-11-18 20:15:37,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 45 states have internal predecessors, (66), 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) [2022-11-18 20:15:37,744 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 173 transitions. [2022-11-18 20:15:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:15:37,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:37,746 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:37,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:37,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:15:37,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash 792637861, now seen corresponding path program 2 times [2022-11-18 20:15:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:37,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819997526] [2022-11-18 20:15:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:37,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:38,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819997526] [2022-11-18 20:15:38,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:15:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365936979] [2022-11-18 20:15:38,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:15:38,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:38,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:38,045 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:38,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:15:38,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:15:38,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:38,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:15:38,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:15:38,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:38,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365936979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:38,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:38,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:15:38,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548524638] [2022-11-18 20:15:38,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:38,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:15:38,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:15:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:15:38,199 INFO L87 Difference]: Start difference. First operand 140 states and 173 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2022-11-18 20:15:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:38,329 INFO L93 Difference]: Finished difference Result 208 states and 257 transitions. [2022-11-18 20:15:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:15:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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 36 [2022-11-18 20:15:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:38,331 INFO L225 Difference]: With dead ends: 208 [2022-11-18 20:15:38,331 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 20:15:38,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:15:38,332 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:38,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 34 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:15:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 20:15:38,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 88. [2022-11-18 20:15:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1379310344827587) internal successors, (99), 87 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:38,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2022-11-18 20:15:38,362 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 36 [2022-11-18 20:15:38,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:38,363 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2022-11-18 20:15:38,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 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) [2022-11-18 20:15:38,363 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2022-11-18 20:15:38,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:15:38,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:38,365 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:38,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 20:15:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:15:38,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:38,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:38,572 INFO L85 PathProgramCache]: Analyzing trace with hash -187195163, now seen corresponding path program 3 times [2022-11-18 20:15:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903967224] [2022-11-18 20:15:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:38,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:38,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:38,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718594923] [2022-11-18 20:15:38,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:15:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:38,603 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:38,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:15:39,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 20:15:39,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:39,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:15:39,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:15:39,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:15:39,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:39,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903967224] [2022-11-18 20:15:39,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:15:39,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718594923] [2022-11-18 20:15:39,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718594923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:39,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:39,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2022-11-18 20:15:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505083632] [2022-11-18 20:15:39,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:39,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:15:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:15:39,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:15:39,714 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:40,909 INFO L93 Difference]: Finished difference Result 175 states and 186 transitions. [2022-11-18 20:15:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:15:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:15:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:40,911 INFO L225 Difference]: With dead ends: 175 [2022-11-18 20:15:40,911 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 20:15:40,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:15:40,912 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 353 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:40,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 189 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:15:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 20:15:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 79. [2022-11-18 20:15:40,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1025641025641026) internal successors, (86), 78 states have internal predecessors, (86), 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) [2022-11-18 20:15:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2022-11-18 20:15:40,942 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 36 [2022-11-18 20:15:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:40,942 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2022-11-18 20:15:40,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2022-11-18 20:15:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:15:40,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:40,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:40,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:41,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:41,158 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:41,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash 180276683, now seen corresponding path program 4 times [2022-11-18 20:15:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:41,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22238604] [2022-11-18 20:15:41,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:41,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:41,181 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:41,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119986326] [2022-11-18 20:15:41,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:15:41,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:41,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:41,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:41,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:15:41,281 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:15:41,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:15:41,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:15:41,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:15:41,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:41,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22238604] [2022-11-18 20:15:41,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:15:41,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119986326] [2022-11-18 20:15:41,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119986326] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:41,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:41,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-18 20:15:41,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953485097] [2022-11-18 20:15:41,675 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:41,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:15:41,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:41,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:15:41,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:15:41,677 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:42,462 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2022-11-18 20:15:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:15:42,463 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 20:15:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:42,464 INFO L225 Difference]: With dead ends: 123 [2022-11-18 20:15:42,464 INFO L226 Difference]: Without dead ends: 107 [2022-11-18 20:15:42,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:15:42,465 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 111 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:42,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 167 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:15:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-18 20:15:42,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 61. [2022-11-18 20:15:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2022-11-18 20:15:42,489 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 37 [2022-11-18 20:15:42,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:42,489 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2022-11-18 20:15:42,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:42,490 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2022-11-18 20:15:42,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 20:15:42,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:42,491 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:42,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:15:42,698 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:42,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 5 times [2022-11-18 20:15:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:42,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267428009] [2022-11-18 20:15:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:42,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:15:42,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519685134] [2022-11-18 20:15:42,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:15:42,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:15:42,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:42,745 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:15:42,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:15:43,123 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:15:43,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:43,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-18 20:15:43,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:43,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:15:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:15:43,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 99 [2022-11-18 20:15:43,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-18 20:15:43,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 47 [2022-11-18 20:15:43,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-11-18 20:15:43,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-18 20:15:43,933 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:15:43,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 160 treesize of output 144 [2022-11-18 20:15:43,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:43,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:43,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 197 [2022-11-18 20:15:44,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:44,034 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 173 treesize of output 101 [2022-11-18 20:15:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:44,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:44,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:44,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:15:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:44,291 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2022-11-18 20:15:44,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 69 treesize of output 66 [2022-11-18 20:15:44,916 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-18 20:15:44,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 73 treesize of output 41 [2022-11-18 20:15:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:44,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:05,574 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 81 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:16:16,689 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 55 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:17:12,808 WARN L233 SmtUtils]: Spent 33.58s on a formula simplification. DAG size of input: 142 DAG size of output: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:17:29,986 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 34 treesize of output 28 [2022-11-18 20:17:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:30,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:30,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267428009] [2022-11-18 20:17:30,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:17:30,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519685134] [2022-11-18 20:17:30,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519685134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:17:30,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:17:30,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-11-18 20:17:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793746357] [2022-11-18 20:17:30,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:17:30,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:17:30,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:30,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:17:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=828, Unknown=13, NotChecked=0, Total=992 [2022-11-18 20:17:30,366 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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) [2022-11-18 20:17:45,924 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 61 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:18:01,914 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 90 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:18:18,590 WARN L233 SmtUtils]: Spent 13.30s on a formula simplification. DAG size of input: 120 DAG size of output: 104 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:18:19,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:18:24,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:24,737 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2022-11-18 20:18:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 20:18:24,738 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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 38 [2022-11-18 20:18:24,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:24,738 INFO L225 Difference]: With dead ends: 86 [2022-11-18 20:18:24,738 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 20:18:24,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 154.0s TimeCoverageRelationStatistics Valid=287, Invalid=1679, Unknown=14, NotChecked=0, Total=1980 [2022-11-18 20:18:24,739 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:24,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 120 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 253 Invalid, 0 Unknown, 141 Unchecked, 3.7s Time] [2022-11-18 20:18:24,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 20:18:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2022-11-18 20:18:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2022-11-18 20:18:24,764 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 38 [2022-11-18 20:18:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:24,764 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2022-11-18 20:18:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 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) [2022-11-18 20:18:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2022-11-18 20:18:24,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 20:18:24,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:24,771 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:24,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:24,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:24,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:24,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1096318795, now seen corresponding path program 4 times [2022-11-18 20:18:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:24,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249818341] [2022-11-18 20:18:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:24,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:25,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:18:25,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060905620] [2022-11-18 20:18:25,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:18:25,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:25,020 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:25,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:18:25,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:18:25,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:25,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:18:25,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 42 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:25,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:18:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 42 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:25,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:18:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249818341] [2022-11-18 20:18:25,658 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:18:25,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060905620] [2022-11-18 20:18:25,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060905620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:18:25,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:18:25,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-18 20:18:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117156144] [2022-11-18 20:18:25,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:18:25,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:18:25,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:18:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:18:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:18:25,660 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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) [2022-11-18 20:18:26,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:18:26,464 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2022-11-18 20:18:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:18:26,464 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 20:18:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:18:26,465 INFO L225 Difference]: With dead ends: 153 [2022-11-18 20:18:26,465 INFO L226 Difference]: Without dead ends: 115 [2022-11-18 20:18:26,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 54 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:18:26,467 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 252 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:18:26,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 124 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:18:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-18 20:18:26,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 74. [2022-11-18 20:18:26,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:18:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-11-18 20:18:26,497 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 39 [2022-11-18 20:18:26,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:18:26,497 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-11-18 20:18:26,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 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) [2022-11-18 20:18:26,498 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-11-18 20:18:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:18:26,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:18:26,499 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:18:26,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:18:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:26,705 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:18:26,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:18:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash 173090424, now seen corresponding path program 6 times [2022-11-18 20:18:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:18:26,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544527752] [2022-11-18 20:18:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:18:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:18:26,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:18:26,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996221018] [2022-11-18 20:18:26,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:18:26,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:18:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:18:26,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:18:26,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95caef62-e77d-4251-96c5-b67986d3f01a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:18:27,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 20:18:27,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:18:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 20:18:27,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:18:27,456 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:18:27,456 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 15 treesize of output 11 [2022-11-18 20:18:27,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:18:27,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:18:27,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:18:27,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-18 20:18:27,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:18:27,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:18:27,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-18 20:18:27,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:18:27,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:18:27,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:27,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-18 20:18:28,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 20:18:28,356 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:18:28,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 127 [2022-11-18 20:18:28,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:18:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 194 [2022-11-18 20:18:28,762 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:18:28,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 101 [2022-11-18 20:18:28,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,775 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 92 treesize of output 157 [2022-11-18 20:18:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,822 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 106 treesize of output 38 [2022-11-18 20:18:28,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:18:28,990 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 20:18:28,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 44 [2022-11-18 20:18:29,469 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:18:29,469 INFO L328 TraceCheckSpWp]: Computing backward predicates...