./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condg.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condg.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2909e53e12aac54327f6ce090ad489c978c1fbcfb0ae8bd4172abe8a99b2cb53 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:28:09,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:28:09,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:28:09,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:28:09,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:28:09,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:28:09,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:28:09,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:28:09,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:28:09,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:28:09,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:28:09,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:28:09,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:28:09,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:28:09,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:28:09,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:28:09,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:28:09,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:28:09,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:28:09,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:28:09,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:28:09,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:28:09,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:28:09,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:28:09,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:28:09,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:28:09,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:28:09,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:28:09,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:28:09,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:28:09,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:28:09,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:28:09,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:28:09,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:28:09,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:28:09,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:28:09,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:28:09,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:28:09,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:28:09,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:28:09,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:28:09,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:28:09,188 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:28:09,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:28:09,201 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:28:09,201 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:28:09,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:28:09,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:28:09,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:28:09,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:28:09,204 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:28:09,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:28:09,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:28:09,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:28:09,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:28:09,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:28:09,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:28:09,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:28:09,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:28:09,206 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:28:09,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:28:09,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:28:09,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:28:09,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:28:09,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:28:09,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:28:09,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:09,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:28:09,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:28:09,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:28:09,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:28:09,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:28:09,212 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:28:09,212 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:28:09,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:28:09,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2909e53e12aac54327f6ce090ad489c978c1fbcfb0ae8bd4172abe8a99b2cb53 [2022-11-16 12:28:09,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:28:09,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:28:09,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:28:09,641 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:28:09,642 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:28:09,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/array-fpi/condg.c [2022-11-16 12:28:09,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/data/9bfbee8d9/af63cc4247d145efaf4cdb97f9cd7a8b/FLAG3685e841d [2022-11-16 12:28:10,308 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:28:10,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/sv-benchmarks/c/array-fpi/condg.c [2022-11-16 12:28:10,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/data/9bfbee8d9/af63cc4247d145efaf4cdb97f9cd7a8b/FLAG3685e841d [2022-11-16 12:28:10,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/data/9bfbee8d9/af63cc4247d145efaf4cdb97f9cd7a8b [2022-11-16 12:28:10,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:28:10,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:28:10,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:10,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:28:10,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:28:10,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:10,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1096ae93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10, skipping insertion in model container [2022-11-16 12:28:10,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:10,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:28:10,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:28:10,904 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/sv-benchmarks/c/array-fpi/condg.c[588,601] [2022-11-16 12:28:10,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:10,937 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:28:10,951 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/sv-benchmarks/c/array-fpi/condg.c[588,601] [2022-11-16 12:28:10,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:28:10,979 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:28:10,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10 WrapperNode [2022-11-16 12:28:10,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:28:10,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:10,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:28:10,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:28:10,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,055 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2022-11-16 12:28:11,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:28:11,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:28:11,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:28:11,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:28:11,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,088 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:28:11,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:28:11,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:28:11,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:28:11,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (1/1) ... [2022-11-16 12:28:11,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:28:11,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:11,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:28:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:28:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:28:11,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:28:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:28:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:28:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:28:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:28:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:28:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:28:11,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:28:11,312 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:28:11,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:28:11,667 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:28:11,674 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:28:11,690 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:28:11,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:11 BoogieIcfgContainer [2022-11-16 12:28:11,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:28:11,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:28:11,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:28:11,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:28:11,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:28:10" (1/3) ... [2022-11-16 12:28:11,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b615a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:11, skipping insertion in model container [2022-11-16 12:28:11,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:28:10" (2/3) ... [2022-11-16 12:28:11,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b615a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:28:11, skipping insertion in model container [2022-11-16 12:28:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:28:11" (3/3) ... [2022-11-16 12:28:11,705 INFO L112 eAbstractionObserver]: Analyzing ICFG condg.c [2022-11-16 12:28:11,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:28:11,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:28:11,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:28:11,877 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;@1b4815a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:28:11,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:28:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:28:11,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:11,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:11,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:11,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -592817118, now seen corresponding path program 1 times [2022-11-16 12:28:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:11,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64679585] [2022-11-16 12:28:11,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:11,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64679585] [2022-11-16 12:28:12,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64679585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:12,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:12,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:28:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268530784] [2022-11-16 12:28:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:28:12,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:28:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:28:12,311 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.565217391304348) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:12,336 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2022-11-16 12:28:12,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:28:12,341 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:28:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:12,353 INFO L225 Difference]: With dead ends: 46 [2022-11-16 12:28:12,355 INFO L226 Difference]: Without dead ends: 21 [2022-11-16 12:28:12,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:28:12,365 INFO L413 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:12,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:28:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-16 12:28:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-16 12:28:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-16 12:28:12,416 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2022-11-16 12:28:12,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:12,417 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-16 12:28:12,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,418 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-16 12:28:12,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:28:12,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:12,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:12,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:28:12,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:12,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 108247460, now seen corresponding path program 1 times [2022-11-16 12:28:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:12,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911750417] [2022-11-16 12:28:12,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:12,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:12,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:12,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911750417] [2022-11-16 12:28:12,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911750417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:28:12,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:28:12,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:28:12,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566686594] [2022-11-16 12:28:12,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:28:12,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:28:12,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:12,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:28:12,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:12,615 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:12,760 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-11-16 12:28:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:28:12,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:28:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:12,762 INFO L225 Difference]: With dead ends: 48 [2022-11-16 12:28:12,762 INFO L226 Difference]: Without dead ends: 34 [2022-11-16 12:28:12,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:28:12,765 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 16 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:28:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-16 12:28:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2022-11-16 12:28:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-16 12:28:12,790 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2022-11-16 12:28:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:12,791 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-16 12:28:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-16 12:28:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:28:12,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:12,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:12,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:28:12,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1242970242, now seen corresponding path program 1 times [2022-11-16 12:28:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:12,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431955820] [2022-11-16 12:28:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:14,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:14,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431955820] [2022-11-16 12:28:14,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431955820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526752960] [2022-11-16 12:28:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:14,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:14,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:14,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:14,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:28:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:14,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:28:14,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:14,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:28:14,454 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 18 treesize of output 14 [2022-11-16 12:28:14,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:28:14,595 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 46 treesize of output 20 [2022-11-16 12:28:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:14,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:14,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:14,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-11-16 12:28:14,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:14,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-11-16 12:28:14,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-16 12:28:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:14,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526752960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:14,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:14,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2022-11-16 12:28:14,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952806979] [2022-11-16 12:28:14,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:28:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:28:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=249, Unknown=2, NotChecked=0, Total=306 [2022-11-16 12:28:14,981 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:15,673 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-16 12:28:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:28:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 12:28:15,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:15,676 INFO L225 Difference]: With dead ends: 56 [2022-11-16 12:28:15,676 INFO L226 Difference]: Without dead ends: 54 [2022-11-16 12:28:15,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=170, Invalid=758, Unknown=2, NotChecked=0, Total=930 [2022-11-16 12:28:15,679 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 93 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:15,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 127 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 223 Invalid, 0 Unknown, 17 Unchecked, 0.3s Time] [2022-11-16 12:28:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-16 12:28:15,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 33. [2022-11-16 12:28:15,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-11-16 12:28:15,702 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21 [2022-11-16 12:28:15,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:15,703 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-11-16 12:28:15,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:15,704 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-11-16 12:28:15,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:28:15,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:15,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:15,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:15,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:15,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:15,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:15,915 INFO L85 PathProgramCache]: Analyzing trace with hash 532037120, now seen corresponding path program 1 times [2022-11-16 12:28:15,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:15,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225687473] [2022-11-16 12:28:15,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:15,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:16,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225687473] [2022-11-16 12:28:16,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225687473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:16,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122517436] [2022-11-16 12:28:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:16,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:16,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:16,727 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:28:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:16,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 12:28:16,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:16,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:16,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:28:16,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:28:17,168 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 36 treesize of output 23 [2022-11-16 12:28:17,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 26 treesize of output 10 [2022-11-16 12:28:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:17,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:17,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:17,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122517436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:17,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:17,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-11-16 12:28:17,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239891273] [2022-11-16 12:28:17,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:17,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:28:17,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:17,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:28:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:28:17,632 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:18,077 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2022-11-16 12:28:18,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:28:18,078 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-16 12:28:18,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:18,079 INFO L225 Difference]: With dead ends: 66 [2022-11-16 12:28:18,080 INFO L226 Difference]: Without dead ends: 56 [2022-11-16 12:28:18,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:28:18,082 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:18,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 161 Invalid, 0 Unknown, 8 Unchecked, 0.2s Time] [2022-11-16 12:28:18,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-16 12:28:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2022-11-16 12:28:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-11-16 12:28:18,096 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 21 [2022-11-16 12:28:18,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:18,097 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-11-16 12:28:18,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-11-16 12:28:18,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 12:28:18,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:18,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:18,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:18,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:18,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1912499326, now seen corresponding path program 2 times [2022-11-16 12:28:18,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:18,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966064977] [2022-11-16 12:28:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:18,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:18,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:18,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966064977] [2022-11-16 12:28:18,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966064977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780310078] [2022-11-16 12:28:18,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:18,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:18,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:18,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:18,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:28:18,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:18,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:18,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:28:18,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:18,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:18,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:18,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780310078] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:18,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:18,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-16 12:28:18,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100206178] [2022-11-16 12:28:18,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:18,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:28:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:18,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:28:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:28:18,734 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:19,131 INFO L93 Difference]: Finished difference Result 93 states and 114 transitions. [2022-11-16 12:28:19,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:28:19,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-16 12:28:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:19,133 INFO L225 Difference]: With dead ends: 93 [2022-11-16 12:28:19,133 INFO L226 Difference]: Without dead ends: 55 [2022-11-16 12:28:19,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:28:19,135 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 149 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:19,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 92 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:28:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-16 12:28:19,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 39. [2022-11-16 12:28:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-11-16 12:28:19,148 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 23 [2022-11-16 12:28:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-11-16 12:28:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-11-16 12:28:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:28:19,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:19,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:19,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:19,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:19,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:19,359 INFO L85 PathProgramCache]: Analyzing trace with hash 550852762, now seen corresponding path program 1 times [2022-11-16 12:28:19,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:19,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936553280] [2022-11-16 12:28:19,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:19,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:28:19,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:19,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936553280] [2022-11-16 12:28:19,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936553280] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:19,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333241302] [2022-11-16 12:28:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:19,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:19,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:19,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:19,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:28:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:28:19,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:19,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:28:19,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:19,736 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 15 treesize of output 17 [2022-11-16 12:28:19,751 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 16 treesize of output 8 [2022-11-16 12:28:19,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:19,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:21,813 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_152 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_152) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) is different from false [2022-11-16 12:28:21,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:21,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-11-16 12:28:21,844 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 18 treesize of output 14 [2022-11-16 12:28:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 4 not checked. [2022-11-16 12:28:21,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333241302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:21,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:21,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 9 [2022-11-16 12:28:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416578463] [2022-11-16 12:28:21,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:21,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:28:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:21,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:28:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=38, Unknown=3, NotChecked=12, Total=72 [2022-11-16 12:28:21,887 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:22,073 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2022-11-16 12:28:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:28:22,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) Word has length 28 [2022-11-16 12:28:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:22,075 INFO L225 Difference]: With dead ends: 76 [2022-11-16 12:28:22,075 INFO L226 Difference]: Without dead ends: 66 [2022-11-16 12:28:22,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=4, NotChecked=20, Total=156 [2022-11-16 12:28:22,076 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 50 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:22,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 69 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 55 Unchecked, 0.1s Time] [2022-11-16 12:28:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-16 12:28:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 44. [2022-11-16 12:28:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2022-11-16 12:28:22,089 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 28 [2022-11-16 12:28:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:22,089 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2022-11-16 12:28:22,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2022-11-16 12:28:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:28:22,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:22,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:22,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:22,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:22,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1969107172, now seen corresponding path program 3 times [2022-11-16 12:28:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:22,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030910286] [2022-11-16 12:28:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:28:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030910286] [2022-11-16 12:28:24,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030910286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222987741] [2022-11-16 12:28:24,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:28:24,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:24,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:24,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:24,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:28:24,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 12:28:24,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:24,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 12:28:24,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:24,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:24,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:24,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:28:24,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:24,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:24,921 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 28 treesize of output 30 [2022-11-16 12:28:25,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:25,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:25,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:25,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-11-16 12:28:25,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:25,355 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-16 12:28:25,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 42 [2022-11-16 12:28:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:25,865 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:25,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 35 [2022-11-16 12:28:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:26,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:28,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222987741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:28,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:28,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 42 [2022-11-16 12:28:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72674430] [2022-11-16 12:28:28,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-16 12:28:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-16 12:28:28,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1514, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 12:28:28,614 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:31,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:31,120 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2022-11-16 12:28:31,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:28:31,121 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-16 12:28:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:31,124 INFO L225 Difference]: With dead ends: 90 [2022-11-16 12:28:31,124 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 12:28:31,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=362, Invalid=2608, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 12:28:31,127 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:31,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 133 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 179 Invalid, 0 Unknown, 170 Unchecked, 0.3s Time] [2022-11-16 12:28:31,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 12:28:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2022-11-16 12:28:31,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 58 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2022-11-16 12:28:31,147 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 28 [2022-11-16 12:28:31,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:31,148 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2022-11-16 12:28:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2022-11-16 12:28:31,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 12:28:31,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:31,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:31,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 12:28:31,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:31,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1202810022, now seen corresponding path program 4 times [2022-11-16 12:28:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:31,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016893916] [2022-11-16 12:28:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:28:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:31,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016893916] [2022-11-16 12:28:31,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016893916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:31,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802869129] [2022-11-16 12:28:31,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:28:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:31,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:31,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:28:31,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:28:31,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:31,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:28:31,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:28:31,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:28:31,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802869129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:31,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:31,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-11-16 12:28:31,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341906168] [2022-11-16 12:28:31,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:31,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:28:31,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:31,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:28:31,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:28:31,951 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:32,756 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2022-11-16 12:28:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:28:32,757 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 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 30 [2022-11-16 12:28:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:32,758 INFO L225 Difference]: With dead ends: 142 [2022-11-16 12:28:32,759 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 12:28:32,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 12:28:32,761 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 245 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:32,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 162 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:28:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 12:28:32,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2022-11-16 12:28:32,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 66 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2022-11-16 12:28:32,784 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 30 [2022-11-16 12:28:32,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:32,785 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2022-11-16 12:28:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2022-11-16 12:28:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:28:32,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:32,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:32,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:32,997 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash -736332014, now seen corresponding path program 1 times [2022-11-16 12:28:32,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:32,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291057181] [2022-11-16 12:28:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:28:33,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291057181] [2022-11-16 12:28:33,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291057181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:33,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426273421] [2022-11-16 12:28:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:33,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:33,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:33,872 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:33,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:28:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:33,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 12:28:33,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:34,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:28:34,055 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 19 treesize of output 15 [2022-11-16 12:28:34,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:28:34,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:28:34,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:34,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:28:34,232 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 37 treesize of output 17 [2022-11-16 12:28:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:28:34,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:34,580 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_286 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_286) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 1)) is different from false [2022-11-16 12:28:34,606 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:34,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-16 12:28:34,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:28:34,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2022-11-16 12:28:34,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:28:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2022-11-16 12:28:34,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426273421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:34,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:34,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 26 [2022-11-16 12:28:34,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627357719] [2022-11-16 12:28:34,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:28:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:28:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=516, Unknown=1, NotChecked=46, Total=650 [2022-11-16 12:28:34,692 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:35,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:35,626 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2022-11-16 12:28:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:28:35,627 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-16 12:28:35,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:35,628 INFO L225 Difference]: With dead ends: 110 [2022-11-16 12:28:35,628 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 12:28:35,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 50 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=1085, Unknown=1, NotChecked=68, Total=1332 [2022-11-16 12:28:35,629 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 73 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:35,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 182 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 405 Invalid, 0 Unknown, 83 Unchecked, 0.4s Time] [2022-11-16 12:28:35,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 12:28:35,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2022-11-16 12:28:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2022-11-16 12:28:35,655 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 32 [2022-11-16 12:28:35,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:35,656 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2022-11-16 12:28:35,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.769230769230769) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:35,657 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2022-11-16 12:28:35,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 12:28:35,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:35,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:35,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:35,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:28:35,865 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:35,866 INFO L85 PathProgramCache]: Analyzing trace with hash -35267436, now seen corresponding path program 1 times [2022-11-16 12:28:35,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:35,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910235807] [2022-11-16 12:28:35,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:35,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:28:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910235807] [2022-11-16 12:28:36,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910235807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:36,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799022998] [2022-11-16 12:28:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:36,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:36,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:36,026 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:36,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:28:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:36,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:28:36,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:36,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:28:36,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:36,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:28:36,237 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 15 treesize of output 7 [2022-11-16 12:28:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:28:36,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:36,261 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_333 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_333) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) |c_ULTIMATE.start_main_#t~mem11#1|)) is different from false [2022-11-16 12:28:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 1 not checked. [2022-11-16 12:28:36,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799022998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:36,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:36,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 8 [2022-11-16 12:28:36,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302874150] [2022-11-16 12:28:36,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:36,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:28:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:28:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2022-11-16 12:28:36,312 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:40,491 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2022-11-16 12:28:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:28:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-16 12:28:40,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:40,492 INFO L225 Difference]: With dead ends: 91 [2022-11-16 12:28:40,493 INFO L226 Difference]: Without dead ends: 58 [2022-11-16 12:28:40,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=24, Invalid=51, Unknown=1, NotChecked=14, Total=90 [2022-11-16 12:28:40,494 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:40,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 62 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-16 12:28:40,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-16 12:28:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-11-16 12:28:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-16 12:28:40,507 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 32 [2022-11-16 12:28:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:40,507 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-16 12:28:40,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-16 12:28:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:28:40,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:40,509 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:40,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:28:40,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:28:40,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:40,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:40,715 INFO L85 PathProgramCache]: Analyzing trace with hash -143226682, now seen corresponding path program 2 times [2022-11-16 12:28:40,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:40,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274441989] [2022-11-16 12:28:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:28:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:42,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274441989] [2022-11-16 12:28:42,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274441989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:42,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184798915] [2022-11-16 12:28:42,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:42,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:42,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:42,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:28:42,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:42,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:42,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 12:28:42,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:42,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:42,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:42,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:28:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:42,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:42,734 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 30 treesize of output 32 [2022-11-16 12:28:42,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:42,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:42,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:42,931 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 42 treesize of output 47 [2022-11-16 12:28:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:43,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-16 12:28:43,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,532 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:43,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2022-11-16 12:28:43,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:43,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-11-16 12:28:44,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:44,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 58 [2022-11-16 12:28:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,449 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:44,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 52 [2022-11-16 12:28:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:44,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-11-16 12:28:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:44,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:47,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:28:47,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184798915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:47,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:47,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 26, 23] total 58 [2022-11-16 12:28:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927528472] [2022-11-16 12:28:47,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-16 12:28:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-16 12:28:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2820, Unknown=0, NotChecked=0, Total=3306 [2022-11-16 12:28:47,932 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 58 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 58 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:51,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:51,073 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2022-11-16 12:28:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 12:28:51,073 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 58 states have internal predecessors, (92), 0 states have call successors, (0), 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 35 [2022-11-16 12:28:51,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:51,074 INFO L225 Difference]: With dead ends: 96 [2022-11-16 12:28:51,074 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 12:28:51,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2644 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1075, Invalid=6581, Unknown=0, NotChecked=0, Total=7656 [2022-11-16 12:28:51,079 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 143 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:51,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 120 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 385 Invalid, 0 Unknown, 209 Unchecked, 0.7s Time] [2022-11-16 12:28:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 12:28:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2022-11-16 12:28:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2375) internal successors, (99), 80 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2022-11-16 12:28:51,099 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 35 [2022-11-16 12:28:51,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:51,100 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2022-11-16 12:28:51,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5862068965517242) internal successors, (92), 58 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2022-11-16 12:28:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:28:51,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:51,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:51,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:51,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:28:51,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1631780680, now seen corresponding path program 2 times [2022-11-16 12:28:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:51,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358437203] [2022-11-16 12:28:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:51,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 12:28:51,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358437203] [2022-11-16 12:28:51,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358437203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:51,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665082758] [2022-11-16 12:28:51,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:28:51,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:51,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:51,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:51,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:28:51,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:28:51,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:51,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:28:51,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:51,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:51,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:51,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:28:51,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:51,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 12:28:51,843 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 15 treesize of output 7 [2022-11-16 12:28:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:28:51,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:28:51,861 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) is different from false [2022-11-16 12:28:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 5 not checked. [2022-11-16 12:28:54,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665082758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:28:54,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:28:54,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 15 [2022-11-16 12:28:54,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564409212] [2022-11-16 12:28:54,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:28:54,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:28:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:28:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:28:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=136, Unknown=3, NotChecked=24, Total=210 [2022-11-16 12:28:54,019 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:28:54,518 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2022-11-16 12:28:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:28:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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 35 [2022-11-16 12:28:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:28:54,520 INFO L225 Difference]: With dead ends: 143 [2022-11-16 12:28:54,520 INFO L226 Difference]: Without dead ends: 124 [2022-11-16 12:28:54,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=136, Invalid=371, Unknown=3, NotChecked=42, Total=552 [2022-11-16 12:28:54,522 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 173 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:28:54,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 168 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 245 Invalid, 0 Unknown, 100 Unchecked, 0.2s Time] [2022-11-16 12:28:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-16 12:28:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 76. [2022-11-16 12:28:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.16) internal successors, (87), 75 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-11-16 12:28:54,543 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 35 [2022-11-16 12:28:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:28:54,544 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-11-16 12:28:54,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:28:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-11-16 12:28:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:28:54,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:28:54,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:28:54,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:28:54,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:28:54,752 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:28:54,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:28:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash 651947656, now seen corresponding path program 5 times [2022-11-16 12:28:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:28:54,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961527113] [2022-11-16 12:28:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:28:54,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:28:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:28:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:28:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:28:57,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961527113] [2022-11-16 12:28:57,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961527113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:28:57,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395885650] [2022-11-16 12:28:57,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:28:57,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:28:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:28:57,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:28:57,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:28:57,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-16 12:28:57,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:28:57,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-16 12:28:57,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:28:57,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:28:57,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:28:57,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:28:57,511 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 35 treesize of output 37 [2022-11-16 12:28:57,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:57,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:57,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:57,694 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 39 treesize of output 44 [2022-11-16 12:28:58,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:58,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-16 12:28:58,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:58,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2022-11-16 12:28:58,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 49 [2022-11-16 12:28:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:28:58,851 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:28:58,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 49 [2022-11-16 12:28:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:28:59,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:29:03,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395885650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:03,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:29:03,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 19] total 53 [2022-11-16 12:29:03,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9008528] [2022-11-16 12:29:03,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:03,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-16 12:29:03,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:03,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-16 12:29:03,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2432, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 12:29:03,342 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 53 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:05,647 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2022-11-16 12:29:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 12:29:05,648 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-16 12:29:05,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:05,649 INFO L225 Difference]: With dead ends: 115 [2022-11-16 12:29:05,649 INFO L226 Difference]: Without dead ends: 100 [2022-11-16 12:29:05,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1196 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=441, Invalid=3719, Unknown=0, NotChecked=0, Total=4160 [2022-11-16 12:29:05,652 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:05,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 154 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 376 Invalid, 0 Unknown, 275 Unchecked, 0.4s Time] [2022-11-16 12:29:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-16 12:29:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-11-16 12:29:05,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.168421052631579) internal successors, (111), 95 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-11-16 12:29:05,680 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 35 [2022-11-16 12:29:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:05,681 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-11-16 12:29:05,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 53 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-11-16 12:29:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 12:29:05,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:05,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:05,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:05,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:29:05,891 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1015472054, now seen corresponding path program 6 times [2022-11-16 12:29:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407459179] [2022-11-16 12:29:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:29:06,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407459179] [2022-11-16 12:29:06,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407459179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163026420] [2022-11-16 12:29:06,115 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 12:29:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:06,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:06,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:29:06,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-16 12:29:06,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:06,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:29:06,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:06,418 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:29:06,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:29:06,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163026420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:06,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:29:06,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-16 12:29:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089162057] [2022-11-16 12:29:06,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:06,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:29:06,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:06,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:29:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:29:06,547 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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) [2022-11-16 12:29:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:07,374 INFO L93 Difference]: Finished difference Result 179 states and 200 transitions. [2022-11-16 12:29:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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 37 [2022-11-16 12:29:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:07,376 INFO L225 Difference]: With dead ends: 179 [2022-11-16 12:29:07,376 INFO L226 Difference]: Without dead ends: 136 [2022-11-16 12:29:07,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:29:07,377 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 112 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:07,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 262 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:29:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-16 12:29:07,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 96. [2022-11-16 12:29:07,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.1368421052631579) internal successors, (108), 95 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) [2022-11-16 12:29:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2022-11-16 12:29:07,400 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 37 [2022-11-16 12:29:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:07,400 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2022-11-16 12:29:07,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 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) [2022-11-16 12:29:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2022-11-16 12:29:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 12:29:07,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:07,402 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:07,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:07,608 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1638802318, now seen corresponding path program 2 times [2022-11-16 12:29:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:07,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409185667] [2022-11-16 12:29:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:29:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:07,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409185667] [2022-11-16 12:29:07,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409185667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:07,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544742500] [2022-11-16 12:29:07,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:29:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:07,823 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:07,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:29:07,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:29:07,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:07,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:29:07,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:29:08,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:29:08,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544742500] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:08,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:29:08,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-11-16 12:29:08,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291851950] [2022-11-16 12:29:08,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:29:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:29:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:29:08,248 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:08,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:08,604 INFO L93 Difference]: Finished difference Result 175 states and 192 transitions. [2022-11-16 12:29:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:29:08,605 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 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 42 [2022-11-16 12:29:08,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:08,606 INFO L225 Difference]: With dead ends: 175 [2022-11-16 12:29:08,606 INFO L226 Difference]: Without dead ends: 122 [2022-11-16 12:29:08,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:29:08,608 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 218 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:08,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 67 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:29:08,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-16 12:29:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 92. [2022-11-16 12:29:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2022-11-16 12:29:08,635 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 42 [2022-11-16 12:29:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:08,635 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2022-11-16 12:29:08,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:08,636 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2022-11-16 12:29:08,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-16 12:29:08,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:08,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:08,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:08,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:29:08,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:08,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1487374188, now seen corresponding path program 7 times [2022-11-16 12:29:08,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:08,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278317114] [2022-11-16 12:29:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:08,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:29:11,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278317114] [2022-11-16 12:29:11,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278317114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:11,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889235513] [2022-11-16 12:29:11,326 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 12:29:11,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:11,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:11,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:11,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:29:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:11,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-16 12:29:11,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:11,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:29:11,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 12:29:11,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:29:11,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,524 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 30 treesize of output 32 [2022-11-16 12:29:11,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-11-16 12:29:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-11-16 12:29:11,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:11,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-11-16 12:29:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:12,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 62 [2022-11-16 12:29:12,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:12,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 69 [2022-11-16 12:29:12,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,610 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:12,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 65 [2022-11-16 12:29:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:12,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:12,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 70 [2022-11-16 12:29:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:29:13,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 12:29:17,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889235513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:17,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:29:17,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 21] total 50 [2022-11-16 12:29:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842069562] [2022-11-16 12:29:17,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 12:29:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:29:17,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 12:29:17,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2252, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 12:29:17,513 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 50 states, 50 states have (on average 1.44) internal successors, (72), 50 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:21,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:21,498 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2022-11-16 12:29:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:29:21,499 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.44) internal successors, (72), 50 states have internal predecessors, (72), 0 states have call successors, (0), 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 42 [2022-11-16 12:29:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:21,500 INFO L225 Difference]: With dead ends: 126 [2022-11-16 12:29:21,500 INFO L226 Difference]: Without dead ends: 108 [2022-11-16 12:29:21,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=248, Invalid=2832, Unknown=0, NotChecked=0, Total=3080 [2022-11-16 12:29:21,503 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:21,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 193 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1074 Invalid, 0 Unknown, 70 Unchecked, 3.0s Time] [2022-11-16 12:29:21,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-16 12:29:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-11-16 12:29:21,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0943396226415094) internal successors, (116), 106 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2022-11-16 12:29:21,530 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 42 [2022-11-16 12:29:21,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:21,531 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2022-11-16 12:29:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.44) internal successors, (72), 50 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:29:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2022-11-16 12:29:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 12:29:21,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:21,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:21,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:21,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:29:21,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:29:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:21,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2085827890, now seen corresponding path program 3 times [2022-11-16 12:29:21,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:29:21,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801367635] [2022-11-16 12:29:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:29:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:29:23,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801367635] [2022-11-16 12:29:23,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801367635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:29:23,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930828258] [2022-11-16 12:29:23,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:29:23,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:29:23,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:23,724 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:29:23,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8099309-9e2a-4bf4-9489-37d400f7bb8f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:29:23,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 12:29:23,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:23,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-16 12:29:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:24,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:29:24,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-16 12:29:24,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,243 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 28 treesize of output 30 [2022-11-16 12:29:24,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,396 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-11-16 12:29:24,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 56 [2022-11-16 12:29:24,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:24,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:24,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 52 [2022-11-16 12:29:25,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:25,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:25,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:25,158 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:25,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 50 [2022-11-16 12:29:25,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:25,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:25,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:25,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2022-11-16 12:29:26,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:26,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:29:26,654 INFO L321 Elim1Store]: treesize reduction 168, result has 32.8 percent of original size [2022-11-16 12:29:26,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 185 treesize of output 176 [2022-11-16 12:29:28,630 INFO L321 Elim1Store]: treesize reduction 92, result has 69.3 percent of original size [2022-11-16 12:29:28,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 271 [2022-11-16 12:34:02,560 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 3304 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:40:29,287 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification that was a NOOP. DAG size: 2943 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-16 12:42:26,674 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 1376 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)