./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm-if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm-if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8 --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 ec5a38bdcfa55d3eade09a482c32f3a3863eaa8e13e2a337e00dc10a9c55f830 --- 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-2329fc7 [2022-12-13 14:00:26,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:00:26,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:00:26,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:00:26,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:00:26,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:00:26,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:00:26,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:00:26,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:00:26,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:00:26,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:00:26,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:00:26,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:00:26,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:00:26,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:00:26,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:00:26,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:00:26,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:00:26,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:00:26,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:00:26,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:00:26,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:00:26,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:00:26,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:00:26,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:00:26,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:00:26,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:00:26,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:00:26,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:00:26,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:00:26,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:00:26,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:00:26,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:00:26,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:00:26,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:00:26,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:00:26,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:00:26,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:00:26,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:00:26,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:00:26,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:00:26,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:00:26,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:00:26,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:00:26,651 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:00:26,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:00:26,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:00:26,652 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:00:26,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:00:26,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:00:26,653 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:00:26,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:00:26,653 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:00:26,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:00:26,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:00:26,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:00:26,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:00:26,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:00:26,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:00:26,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:00:26,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:00:26,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:00:26,662 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:00:26,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:00:26,663 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:00:26,663 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec5a38bdcfa55d3eade09a482c32f3a3863eaa8e13e2a337e00dc10a9c55f830 [2022-12-13 14:00:26,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:00:26,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:00:26,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:00:26,845 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:00:26,845 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:00:26,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-fpi/sqm-if.c [2022-12-13 14:00:29,393 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:00:29,541 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:00:29,541 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/sv-benchmarks/c/array-fpi/sqm-if.c [2022-12-13 14:00:29,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/data/9d9e1e0b7/89cbf5af79544f79b7d2143ea69a2f66/FLAGf54621915 [2022-12-13 14:00:29,950 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/data/9d9e1e0b7/89cbf5af79544f79b7d2143ea69a2f66 [2022-12-13 14:00:29,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:00:29,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:00:29,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:00:29,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:00:29,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:00:29,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:00:29" (1/1) ... [2022-12-13 14:00:29,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fec904b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:29, skipping insertion in model container [2022-12-13 14:00:29,959 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:00:29" (1/1) ... [2022-12-13 14:00:29,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:00:29,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:00:30,076 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/sv-benchmarks/c/array-fpi/sqm-if.c[589,602] [2022-12-13 14:00:30,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:00:30,097 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:00:30,105 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/sv-benchmarks/c/array-fpi/sqm-if.c[589,602] [2022-12-13 14:00:30,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:00:30,121 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:00:30,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30 WrapperNode [2022-12-13 14:00:30,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:00:30,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:00:30,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:00:30,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:00:30,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,146 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-12-13 14:00:30,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:00:30,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:00:30,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:00:30,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:00:30,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:00:30,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:00:30,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:00:30,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:00:30,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (1/1) ... [2022-12-13 14:00:30,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:00:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:30,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:00:30,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:00:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:00:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:00:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:00:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 14:00:30,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:00:30,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:00:30,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:00:30,295 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:00:30,298 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:00:30,427 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:00:30,431 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:00:30,431 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 14:00:30,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:00:30 BoogieIcfgContainer [2022-12-13 14:00:30,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:00:30,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:00:30,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:00:30,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:00:30,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:00:29" (1/3) ... [2022-12-13 14:00:30,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8f058c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:00:30, skipping insertion in model container [2022-12-13 14:00:30,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:00:30" (2/3) ... [2022-12-13 14:00:30,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8f058c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:00:30, skipping insertion in model container [2022-12-13 14:00:30,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:00:30" (3/3) ... [2022-12-13 14:00:30,442 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm-if.c [2022-12-13 14:00:30,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:00:30,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:00:30,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:00:30,510 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;@41ea8d05, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:00:30,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:00:30,514 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) [2022-12-13 14:00:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 14:00:30,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:30,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:30,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:30,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2022-12-13 14:00:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:30,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402039799] [2022-12-13 14:00:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:30,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:30,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402039799] [2022-12-13 14:00:30,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:00:30,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876470135] [2022-12-13 14:00:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:30,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:30,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:30,649 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:30,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:00:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:30,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 14:00:30,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:30,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:00:30,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876470135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:30,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:30,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:00:30,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640248265] [2022-12-13 14:00:30,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:30,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:00:30,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:30,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:00:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:00:30,758 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) [2022-12-13 14:00:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:30,770 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2022-12-13 14:00:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:00:30,772 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 [2022-12-13 14:00:30,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:30,780 INFO L225 Difference]: With dead ends: 42 [2022-12-13 14:00:30,780 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 14:00:30,783 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 [2022-12-13 14:00:30,786 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 [2022-12-13 14:00:30,787 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] [2022-12-13 14:00:30,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 14:00:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-13 14:00:30,815 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) [2022-12-13 14:00:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-12-13 14:00:30,817 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2022-12-13 14:00:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:30,818 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-12-13 14:00:30,818 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) [2022-12-13 14:00:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-12-13 14:00:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 14:00:30,819 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:30,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:30,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:00:31,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:31,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2022-12-13 14:00:31,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:31,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135063283] [2022-12-13 14:00:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:31,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:31,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135063283] [2022-12-13 14:00:31,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:00:31,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268744160] [2022-12-13 14:00:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:31,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:31,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:31,149 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:31,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:00:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:31,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:00:31,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:31,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:31,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:00:31,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268744160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:31,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:31,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:00:31,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600090125] [2022-12-13 14:00:31,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:31,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:00:31,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:31,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:00:31,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:00:31,249 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) [2022-12-13 14:00:31,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:31,301 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-12-13 14:00:31,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:00:31,301 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 [2022-12-13 14:00:31,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:31,302 INFO L225 Difference]: With dead ends: 42 [2022-12-13 14:00:31,302 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 14:00:31,303 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 [2022-12-13 14:00:31,304 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 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, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:31,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:00:31,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 14:00:31,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-12-13 14:00:31,309 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) [2022-12-13 14:00:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-12-13 14:00:31,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2022-12-13 14:00:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:31,310 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-12-13 14:00:31,310 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) [2022-12-13 14:00:31,310 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-13 14:00:31,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 14:00:31,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:31,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:31,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:00:31,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 14:00:31,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2022-12-13 14:00:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:31,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795532916] [2022-12-13 14:00:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:31,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:31,584 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:31,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714472771] [2022-12-13 14:00:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:31,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:31,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:31,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:31,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:00:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:31,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 14:00:31,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:31,736 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 [2022-12-13 14:00:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:00:31,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:00:31,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795532916] [2022-12-13 14:00:31,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714472771] [2022-12-13 14:00:31,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714472771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:31,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:31,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:00:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699870722] [2022-12-13 14:00:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:31,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:00:31,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:00:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:00:31,788 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) [2022-12-13 14:00:31,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:31,860 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2022-12-13 14:00:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:00:31,861 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 [2022-12-13 14:00:31,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:31,862 INFO L225 Difference]: With dead ends: 38 [2022-12-13 14:00:31,862 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 14:00:31,862 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 [2022-12-13 14:00:31,863 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 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 [2022-12-13 14:00:31,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 70 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:00:31,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 14:00:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-12-13 14:00:31,866 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) [2022-12-13 14:00:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-13 14:00:31,866 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-12-13 14:00:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:31,867 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-13 14:00:31,867 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) [2022-12-13 14:00:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-13 14:00:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 14:00:31,868 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:31,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:31,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 14:00:32,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:32,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:32,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash -217194585, now seen corresponding path program 1 times [2022-12-13 14:00:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:32,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957618474] [2022-12-13 14:00:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:32,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957618474] [2022-12-13 14:00:32,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 14:00:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388975546] [2022-12-13 14:00:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:32,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:32,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:32,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:00:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:32,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:00:32,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:00:32,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:00:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388975546] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:00:32,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:00:32,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:00:32,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100115935] [2022-12-13 14:00:32,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:00:32,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:00:32,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:00:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:00:32,243 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) [2022-12-13 14:00:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:32,278 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-12-13 14:00:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:00:32,279 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 [2022-12-13 14:00:32,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:32,280 INFO L225 Difference]: With dead ends: 55 [2022-12-13 14:00:32,280 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 14:00:32,280 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 [2022-12-13 14:00:32,281 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 [2022-12-13 14:00:32,281 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] [2022-12-13 14:00:32,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 14:00:32,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-12-13 14:00:32,286 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) [2022-12-13 14:00:32,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2022-12-13 14:00:32,287 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2022-12-13 14:00:32,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:32,287 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2022-12-13 14:00:32,287 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) [2022-12-13 14:00:32,287 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2022-12-13 14:00:32,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 14:00:32,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:32,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:32,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:00:32,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:32,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash 259417010, now seen corresponding path program 1 times [2022-12-13 14:00:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:32,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966473360] [2022-12-13 14:00:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:32,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:32,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:32,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768967566] [2022-12-13 14:00:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:32,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:32,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:32,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:00:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:32,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:00:32,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:32,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:32,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:32,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966473360] [2022-12-13 14:00:32,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:32,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768967566] [2022-12-13 14:00:32,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768967566] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:32,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:32,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-12-13 14:00:32,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910259768] [2022-12-13 14:00:32,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:32,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:00:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:32,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:00:32,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:00:32,671 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) [2022-12-13 14:00:32,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:32,767 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-12-13 14:00:32,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:00:32,767 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 [2022-12-13 14:00:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:32,768 INFO L225 Difference]: With dead ends: 70 [2022-12-13 14:00:32,768 INFO L226 Difference]: Without dead ends: 43 [2022-12-13 14:00:32,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:00:32,769 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:32,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 43 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:00:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-13 14:00:32,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-12-13 14:00:32,771 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) [2022-12-13 14:00:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-12-13 14:00:32,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 21 [2022-12-13 14:00:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:32,772 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-12-13 14:00:32,772 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) [2022-12-13 14:00:32,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-12-13 14:00:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 14:00:32,773 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:32,773 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] [2022-12-13 14:00:32,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:00:32,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:32,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 939318754, now seen corresponding path program 1 times [2022-12-13 14:00:32,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:32,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831805381] [2022-12-13 14:00:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:32,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:33,006 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:33,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010801967] [2022-12-13 14:00:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:33,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:33,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:33,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:00:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:33,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 14:00:33,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:33,107 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 [2022-12-13 14:00:33,140 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 [2022-12-13 14:00:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:33,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:33,379 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 [2022-12-13 14:00:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:00:33,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:33,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831805381] [2022-12-13 14:00:33,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010801967] [2022-12-13 14:00:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010801967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:33,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:33,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-12-13 14:00:33,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551060464] [2022-12-13 14:00:33,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:33,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 14:00:33,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:33,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 14:00:33,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:00:33,405 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) [2022-12-13 14:00:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:33,844 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2022-12-13 14:00:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 14:00:33,844 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 [2022-12-13 14:00:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:33,845 INFO L225 Difference]: With dead ends: 112 [2022-12-13 14:00:33,845 INFO L226 Difference]: Without dead ends: 92 [2022-12-13 14:00:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:00:33,847 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 92 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:33,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 105 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:00:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-13 14:00:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 40. [2022-12-13 14:00:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 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) [2022-12-13 14:00:33,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-12-13 14:00:33,854 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 24 [2022-12-13 14:00:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:33,854 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-12-13 14:00:33,854 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) [2022-12-13 14:00:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-12-13 14:00:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 14:00:33,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:33,855 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] [2022-12-13 14:00:33,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:00:34,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:00:34,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 430403928, now seen corresponding path program 1 times [2022-12-13 14:00:34,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:34,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490546499] [2022-12-13 14:00:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:34,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:34,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255100663] [2022-12-13 14:00:34,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:34,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:34,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:34,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:34,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:00:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:00:34,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-13 14:00:34,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:34,168 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 [2022-12-13 14:00:34,190 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 [2022-12-13 14:00:34,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:34,244 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 [2022-12-13 14:00:34,306 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 [2022-12-13 14:00:34,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:34,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-12-13 14:00:34,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 31 [2022-12-13 14:00:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:34,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490546499] [2022-12-13 14:00:35,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:35,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255100663] [2022-12-13 14:00:35,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255100663] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:35,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:35,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-12-13 14:00:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767170539] [2022-12-13 14:00:35,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:35,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 14:00:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 14:00:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:00:35,336 INFO L87 Difference]: Start difference. First operand 40 states and 47 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) [2022-12-13 14:00:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:47,143 INFO L93 Difference]: Finished difference Result 203 states and 229 transitions. [2022-12-13 14:00:47,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-13 14:00:47,143 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 [2022-12-13 14:00:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:47,146 INFO L225 Difference]: With dead ends: 203 [2022-12-13 14:00:47,146 INFO L226 Difference]: Without dead ends: 201 [2022-12-13 14:00:47,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=924, Invalid=3498, Unknown=0, NotChecked=0, Total=4422 [2022-12-13 14:00:47,148 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 489 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 169 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:47,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 222 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 448 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 14:00:47,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-12-13 14:00:47,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 90. [2022-12-13 14:00:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.2696629213483146) internal successors, (113), 89 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) [2022-12-13 14:00:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2022-12-13 14:00:47,170 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 28 [2022-12-13 14:00:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:47,171 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2022-12-13 14:00:47,171 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) [2022-12-13 14:00:47,171 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2022-12-13 14:00:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 14:00:47,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:47,172 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] [2022-12-13 14:00:47,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:00:47,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:47,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:47,375 INFO L85 PathProgramCache]: Analyzing trace with hash 877615566, now seen corresponding path program 2 times [2022-12-13 14:00:47,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:47,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115320944] [2022-12-13 14:00:47,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:47,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:47,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:47,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583007034] [2022-12-13 14:00:47,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:00:47,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:47,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:47,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:47,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:00:47,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:00:47,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:00:47,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:00:47,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:00:47,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:47,589 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:00:47,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:47,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115320944] [2022-12-13 14:00:47,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:47,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583007034] [2022-12-13 14:00:47,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583007034] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:47,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:47,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-12-13 14:00:47,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435787315] [2022-12-13 14:00:47,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:47,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:00:47,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:00:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:00:47,591 INFO L87 Difference]: Start difference. First operand 90 states and 113 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) [2022-12-13 14:00:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:47,725 INFO L93 Difference]: Finished difference Result 189 states and 227 transitions. [2022-12-13 14:00:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:00:47,725 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 [2022-12-13 14:00:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:47,726 INFO L225 Difference]: With dead ends: 189 [2022-12-13 14:00:47,726 INFO L226 Difference]: Without dead ends: 113 [2022-12-13 14:00:47,726 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 [2022-12-13 14:00:47,726 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 74 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:47,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 53 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:00:47,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-12-13 14:00:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 89. [2022-12-13 14:00:47,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 108 transitions. [2022-12-13 14:00:47,743 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 108 transitions. Word has length 32 [2022-12-13 14:00:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:47,744 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 108 transitions. [2022-12-13 14:00:47,744 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) [2022-12-13 14:00:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 108 transitions. [2022-12-13 14:00:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 14:00:47,744 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:47,744 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] [2022-12-13 14:00:47,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:00:47,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:47,946 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash -187195163, now seen corresponding path program 2 times [2022-12-13 14:00:47,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:47,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041544377] [2022-12-13 14:00:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:47,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:47,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:47,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1726199381] [2022-12-13 14:00:47,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:00:47,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:47,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:47,981 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:47,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:00:48,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:00:48,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:00:48,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:00:48,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:00:48,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:00:48,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041544377] [2022-12-13 14:00:48,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:48,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726199381] [2022-12-13 14:00:48,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726199381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:48,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:48,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-12-13 14:00:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729000334] [2022-12-13 14:00:48,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:48,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 14:00:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 14:00:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:00:48,158 INFO L87 Difference]: Start difference. First operand 89 states and 108 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:48,344 INFO L93 Difference]: Finished difference Result 228 states and 264 transitions. [2022-12-13 14:00:48,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 14:00:48,344 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2022-12-13 14:00:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:48,345 INFO L225 Difference]: With dead ends: 228 [2022-12-13 14:00:48,345 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 14:00:48,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:00:48,346 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 150 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:48,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 87 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:00:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 14:00:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 126. [2022-12-13 14:00:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.192) internal successors, (149), 125 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 149 transitions. [2022-12-13 14:00:48,367 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 149 transitions. Word has length 36 [2022-12-13 14:00:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:48,368 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 149 transitions. [2022-12-13 14:00:48,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 149 transitions. [2022-12-13 14:00:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-13 14:00:48,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:48,368 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:00:48,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 14:00:48,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:48,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:48,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1173959464, now seen corresponding path program 3 times [2022-12-13 14:00:48,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:48,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301453955] [2022-12-13 14:00:48,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:48,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:48,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:48,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676463109] [2022-12-13 14:00:48,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:00:48,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:48,621 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:48,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:00:48,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 14:00:48,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:00:48,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:00:48,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:00:48,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:00:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:00:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:00:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301453955] [2022-12-13 14:00:48,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:00:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676463109] [2022-12-13 14:00:48,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676463109] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:00:48,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:00:48,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2022-12-13 14:00:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536755382] [2022-12-13 14:00:48,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:00:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 14:00:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:00:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 14:00:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:00:48,956 INFO L87 Difference]: Start difference. First operand 126 states and 149 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:49,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:00:49,418 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2022-12-13 14:00:49,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 14:00:49,419 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-12-13 14:00:49,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:00:49,419 INFO L225 Difference]: With dead ends: 154 [2022-12-13 14:00:49,419 INFO L226 Difference]: Without dead ends: 145 [2022-12-13 14:00:49,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 14:00:49,420 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 88 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:00:49,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 82 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:00:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-12-13 14:00:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-12-13 14:00:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1774193548387097) internal successors, (146), 124 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:49,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2022-12-13 14:00:49,439 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 37 [2022-12-13 14:00:49,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:00:49,439 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2022-12-13 14:00:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:00:49,439 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2022-12-13 14:00:49,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 14:00:49,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:00:49,440 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] [2022-12-13 14:00:49,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 14:00:49,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:49,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:00:49,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:00:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1129715953, now seen corresponding path program 4 times [2022-12-13 14:00:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:00:49,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40206338] [2022-12-13 14:00:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:00:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:00:49,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:00:49,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91668510] [2022-12-13 14:00:49,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 14:00:49,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:00:49,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:00:49,696 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:00:49,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 14:00:49,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 14:00:49,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:00:49,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 14:00:49,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:00:49,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 14:00:49,930 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 [2022-12-13 14:00:49,977 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 [2022-12-13 14:00:49,980 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:00:49,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:49,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:49,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:49,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:49,985 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 [2022-12-13 14:00:49,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:49,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,001 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 175 treesize of output 88 [2022-12-13 14:00:50,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,065 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 36 treesize of output 34 [2022-12-13 14:00:50,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-12-13 14:00:50,211 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 159 treesize of output 143 [2022-12-13 14:00:50,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:00:50,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,220 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 125 treesize of output 199 [2022-12-13 14:00:50,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,255 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 107 treesize of output 49 [2022-12-13 14:00:50,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:00:50,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:00:50,359 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-12-13 14:00:50,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 59 [2022-12-13 14:00:50,707 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-12-13 14:00:50,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 48 [2022-12-13 14:00:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:00:50,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:01:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:01:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:01:02,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40206338] [2022-12-13 14:01:02,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:01:02,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91668510] [2022-12-13 14:01:02,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91668510] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:01:02,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:01:02,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-12-13 14:01:02,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184241209] [2022-12-13 14:01:02,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:01:02,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 14:01:02,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:01:02,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 14:01:02,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 14:01:02,266 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 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) [2022-12-13 14:01:23,017 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 227 DAG size of output: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:02:02,799 WARN L233 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 229 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:02:19,764 WARN L233 SmtUtils]: Spent 11.68s on a formula simplification. DAG size of input: 230 DAG size of output: 103 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:02:48,941 WARN L233 SmtUtils]: Spent 13.53s on a formula simplification. DAG size of input: 213 DAG size of output: 110 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:03:05,273 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 211 DAG size of output: 108 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:03:20,406 WARN L233 SmtUtils]: Spent 10.63s on a formula simplification. DAG size of input: 214 DAG size of output: 111 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:03:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:03:59,536 INFO L93 Difference]: Finished difference Result 473 states and 547 transitions. [2022-12-13 14:03:59,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-13 14:03:59,536 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 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 [2022-12-13 14:03:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:03:59,538 INFO L225 Difference]: With dead ends: 473 [2022-12-13 14:03:59,538 INFO L226 Difference]: Without dead ends: 315 [2022-12-13 14:03:59,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1969 ImplicationChecksByTransitivity, 169.3s TimeCoverageRelationStatistics Valid=1351, Invalid=5621, Unknown=0, NotChecked=0, Total=6972 [2022-12-13 14:03:59,541 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 810 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:03:59,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 345 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 18.8s Time] [2022-12-13 14:03:59,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-12-13 14:03:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 110. [2022-12-13 14:03:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.201834862385321) internal successors, (131), 109 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:03:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2022-12-13 14:03:59,563 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 38 [2022-12-13 14:03:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:03:59,563 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2022-12-13 14:03:59,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 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) [2022-12-13 14:03:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2022-12-13 14:03:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 14:03:59,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:03:59,564 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:03:59,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 14:03:59,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 14:03:59,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:03:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:03:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1616997781, now seen corresponding path program 3 times [2022-12-13 14:03:59,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:03:59,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721273102] [2022-12-13 14:03:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:03:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:03:59,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:03:59,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900296239] [2022-12-13 14:03:59,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:03:59,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:03:59,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:03:59,833 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:03:59,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 14:04:00,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 14:04:00,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:04:00,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 14:04:00,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 37 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:04:00,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:01,124 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:04:01,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:01,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721273102] [2022-12-13 14:04:01,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:04:01,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900296239] [2022-12-13 14:04:01,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900296239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:01,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:01,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 23 [2022-12-13 14:04:01,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25016086] [2022-12-13 14:04:01,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:01,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 14:04:01,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:01,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 14:04:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:04:01,126 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:01,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:01,975 INFO L93 Difference]: Finished difference Result 283 states and 316 transitions. [2022-12-13 14:04:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-13 14:04:01,976 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 14:04:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:01,977 INFO L225 Difference]: With dead ends: 283 [2022-12-13 14:04:01,977 INFO L226 Difference]: Without dead ends: 247 [2022-12-13 14:04:01,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=1799, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 14:04:01,978 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 537 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 294 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:04:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-12-13 14:04:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 140. [2022-12-13 14:04:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1798561151079137) internal successors, (164), 139 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2022-12-13 14:04:02,003 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 45 [2022-12-13 14:04:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:02,003 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2022-12-13 14:04:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2022-12-13 14:04:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 14:04:02,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:02,003 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:02,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 14:04:02,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 14:04:02,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:02,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash 58856955, now seen corresponding path program 5 times [2022-12-13 14:04:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:02,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456195350] [2022-12-13 14:04:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:02,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:02,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:04:02,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041298806] [2022-12-13 14:04:02,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 14:04:02,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:04:02,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:04:02,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:04:02,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 14:04:08,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-13 14:04:08,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:04:08,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:04:08,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 58 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:08,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 53 proven. 29 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 14:04:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:04:08,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456195350] [2022-12-13 14:04:08,972 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 14:04:08,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041298806] [2022-12-13 14:04:08,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041298806] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:08,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:08,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2022-12-13 14:04:08,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602020691] [2022-12-13 14:04:08,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 14:04:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:04:08,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 14:04:08,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-12-13 14:04:08,974 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:09,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:09,604 INFO L93 Difference]: Finished difference Result 325 states and 375 transitions. [2022-12-13 14:04:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 14:04:09,605 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-12-13 14:04:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:09,606 INFO L225 Difference]: With dead ends: 325 [2022-12-13 14:04:09,606 INFO L226 Difference]: Without dead ends: 183 [2022-12-13 14:04:09,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=451, Invalid=1271, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 14:04:09,608 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 268 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:09,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 255 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:04:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-12-13 14:04:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 115. [2022-12-13 14:04:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 114 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2022-12-13 14:04:09,647 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 46 [2022-12-13 14:04:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:09,647 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2022-12-13 14:04:09,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 22 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2022-12-13 14:04:09,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 14:04:09,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:09,648 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:09,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 14:04:09,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:04:09,849 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:09,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1846236060, now seen corresponding path program 6 times [2022-12-13 14:04:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:04:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163977534] [2022-12-13 14:04:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:09,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:04:09,895 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 14:04:09,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873431709] [2022-12-13 14:04:09,895 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 14:04:09,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:04:09,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:04:09,897 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:04:09,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23adc296-3c8e-4032-9869-ab5a6dac8066/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 14:04:10,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-13 14:04:10,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:04:10,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 14:04:10,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:10,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-13 14:04:10,506 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 [2022-12-13 14:04:10,574 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 [2022-12-13 14:04:10,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:04:10,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,584 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 [2022-12-13 14:04:10,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,644 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 [2022-12-13 14:04:10,738 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 125 treesize of output 110 [2022-12-13 14:04:10,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:04:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 187 [2022-12-13 14:04:10,756 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 14:04:10,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:10,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-12-13 14:04:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,020 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 45 treesize of output 44 [2022-12-13 14:04:11,146 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 162 treesize of output 146 [2022-12-13 14:04:11,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 14:04:11,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,166 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 125 treesize of output 199 [2022-12-13 14:04:11,501 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:04:11,501 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 234 treesize of output 212 [2022-12-13 14:04:11,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,520 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 160 treesize of output 242 [2022-12-13 14:04:11,957 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-13 14:04:11,957 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 335 treesize of output 303 [2022-12-13 14:04:11,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 14:04:11,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 279 [2022-12-13 14:04:12,058 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-13 14:04:12,902 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-12-13 14:04:12,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 51 [2022-12-13 14:04:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:04:12,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:47,669 WARN L233 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 143 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:05:24,151 WARN L233 SmtUtils]: Spent 18.39s on a formula simplification. DAG size of input: 155 DAG size of output: 100 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:05:34,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21279843248306 treesize of output 20540739774642