./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/recHanoi01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/recHanoi01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:27:45,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:27:45,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:27:45,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:27:45,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:27:45,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:27:45,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:27:45,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:27:45,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:27:45,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:27:45,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:27:45,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:27:45,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:27:45,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:27:45,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:27:45,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:27:45,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:27:45,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:27:45,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:27:45,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:27:45,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:27:45,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:27:45,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:27:45,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:27:45,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:27:45,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:27:45,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:27:45,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:27:45,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:27:45,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:27:45,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:27:45,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:27:45,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:27:45,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:27:45,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:27:45,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:27:45,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:27:45,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:27:45,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:27:45,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:27:45,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:27:45,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:27:45,232 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:27:45,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:27:45,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:27:45,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:27:45,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:27:45,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:27:45,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:27:45,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:27:45,239 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:27:45,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:27:45,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:27:45,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:27:45,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:27:45,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:27:45,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:27:45,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:27:45,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:27:45,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:27:45,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:27:45,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:27:45,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:27:45,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:27:45,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:27:45,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:27:45,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:27:45,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:27:45,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:27:45,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:27:45,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:27:45,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:27:45,247 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:27:45,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:27:45,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:27:45,248 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_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b02fad28964214b0cd332ac12fce3136c6c5e9247130ab67f1c2c3baea22f9 [2022-11-20 12:27:45,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:27:45,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:27:45,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:27:45,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:27:45,692 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:27:45,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive/recHanoi01.c [2022-11-20 12:27:49,359 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:27:49,610 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:27:49,611 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/sv-benchmarks/c/recursive/recHanoi01.c [2022-11-20 12:27:49,639 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/data/2da0d91d5/051e463c3c424afd82ff0afc8ac5e420/FLAG221f67eed [2022-11-20 12:27:49,697 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/data/2da0d91d5/051e463c3c424afd82ff0afc8ac5e420 [2022-11-20 12:27:49,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:27:49,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:27:49,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:27:49,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:27:49,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:27:49,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:49,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122a37d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49, skipping insertion in model container [2022-11-20 12:27:49,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:49,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:27:49,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:27:49,919 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/sv-benchmarks/c/recursive/recHanoi01.c[1213,1226] [2022-11-20 12:27:49,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:27:49,951 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:27:49,967 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/sv-benchmarks/c/recursive/recHanoi01.c[1213,1226] [2022-11-20 12:27:49,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:27:49,983 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:27:49,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49 WrapperNode [2022-11-20 12:27:49,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:27:49,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:27:49,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:27:49,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:27:49,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,027 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-20 12:27:50,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:27:50,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:27:50,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:27:50,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:27:50,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:27:50,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:27:50,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:27:50,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:27:50,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (1/1) ... [2022-11-20 12:27:50,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:27:50,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:50,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:27:50,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:27:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:27:50,210 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2022-11-20 12:27:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2022-11-20 12:27:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2022-11-20 12:27:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2022-11-20 12:27:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:27:50,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:27:50,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:27:50,308 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:27:50,311 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:27:50,551 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:27:50,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:27:50,575 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:27:50,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:27:50 BoogieIcfgContainer [2022-11-20 12:27:50,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:27:50,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:27:50,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:27:50,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:27:50,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:27:49" (1/3) ... [2022-11-20 12:27:50,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30962010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:27:50, skipping insertion in model container [2022-11-20 12:27:50,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:27:49" (2/3) ... [2022-11-20 12:27:50,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30962010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:27:50, skipping insertion in model container [2022-11-20 12:27:50,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:27:50" (3/3) ... [2022-11-20 12:27:50,604 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2022-11-20 12:27:50,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:27:50,655 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:27:50,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:27:50,770 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;@1351d042, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:27:50,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:27:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-20 12:27:50,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:27:50,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:50,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:50,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash -424312916, now seen corresponding path program 1 times [2022-11-20 12:27:50,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:50,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264963803] [2022-11-20 12:27:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:50,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:51,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:27:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:27:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:27:51,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:51,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264963803] [2022-11-20 12:27:51,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264963803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:27:51,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:27:51,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:27:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071540816] [2022-11-20 12:27:51,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:27:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:27:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:27:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:27:51,295 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:27:51,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:51,560 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-11-20 12:27:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:27:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-20 12:27:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:51,573 INFO L225 Difference]: With dead ends: 43 [2022-11-20 12:27:51,573 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 12:27:51,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:27:51,581 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:51,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 58 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:27:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 12:27:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 12:27:51,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 12:27:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-20 12:27:51,631 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2022-11-20 12:27:51,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:51,632 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-20 12:27:51,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:27:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-20 12:27:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:27:51,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:51,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:51,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:27:51,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:51,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2103389423, now seen corresponding path program 1 times [2022-11-20 12:27:51,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:51,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166254984] [2022-11-20 12:27:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:51,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:27:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:27:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:52,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:27:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:27:52,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:52,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166254984] [2022-11-20 12:27:52,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166254984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:52,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013586247] [2022-11-20 12:27:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:52,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:52,356 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:52,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:27:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:27:52,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:27:52,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:27:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:27:53,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013586247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:27:53,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:27:53,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 17 [2022-11-20 12:27:53,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404569970] [2022-11-20 12:27:53,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:27:53,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:27:53,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:27:53,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:27:53,183 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-20 12:27:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:53,899 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2022-11-20 12:27:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:27:53,900 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 26 [2022-11-20 12:27:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:53,903 INFO L225 Difference]: With dead ends: 74 [2022-11-20 12:27:53,903 INFO L226 Difference]: Without dead ends: 68 [2022-11-20 12:27:53,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:27:53,906 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 93 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:53,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 104 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:27:53,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-20 12:27:53,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2022-11-20 12:27:53,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 34 states have internal predecessors, (36), 14 states have call successors, (14), 6 states have call predecessors, (14), 11 states have return successors, (33), 16 states have call predecessors, (33), 14 states have call successors, (33) [2022-11-20 12:27:53,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-11-20 12:27:53,931 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 26 [2022-11-20 12:27:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:53,931 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-11-20 12:27:53,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 15 states have internal predecessors, (29), 4 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-20 12:27:53,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-11-20 12:27:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:27:53,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:53,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:53,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:54,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:54,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:54,143 INFO L85 PathProgramCache]: Analyzing trace with hash 365687158, now seen corresponding path program 2 times [2022-11-20 12:27:54,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:54,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440556824] [2022-11-20 12:27:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:54,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:27:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:27:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:27:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 12:27:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 12:27:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:54,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440556824] [2022-11-20 12:27:54,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440556824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:54,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799703032] [2022-11-20 12:27:54,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:27:54,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:54,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:54,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:54,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:27:54,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:27:54,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:27:54,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:27:54,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 12:27:54,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:27:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:27:55,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799703032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:27:55,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:27:55,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 11] total 18 [2022-11-20 12:27:55,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42154877] [2022-11-20 12:27:55,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:27:55,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:27:55,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:27:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:27:55,489 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-20 12:27:55,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:55,955 INFO L93 Difference]: Finished difference Result 108 states and 169 transitions. [2022-11-20 12:27:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:27:55,956 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 36 [2022-11-20 12:27:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:55,964 INFO L225 Difference]: With dead ends: 108 [2022-11-20 12:27:55,964 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 12:27:55,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:27:55,971 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:55,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 125 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:27:55,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 12:27:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2022-11-20 12:27:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (20), 12 states have call predecessors, (20), 11 states have call successors, (20) [2022-11-20 12:27:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2022-11-20 12:27:56,012 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 36 [2022-11-20 12:27:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:56,013 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2022-11-20 12:27:56,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 9 states have call successors, (14), 2 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-20 12:27:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2022-11-20 12:27:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 12:27:56,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:56,016 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:56,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:56,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:56,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:56,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash -787037173, now seen corresponding path program 1 times [2022-11-20 12:27:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:56,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357508281] [2022-11-20 12:27:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:56,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:27:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:27:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:27:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:27:56,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:56,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357508281] [2022-11-20 12:27:56,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357508281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:56,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240768355] [2022-11-20 12:27:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:56,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:56,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:56,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:56,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:27:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:56,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:27:56,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:27:56,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:27:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:27:57,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240768355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:27:57,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:27:57,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 20 [2022-11-20 12:27:57,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752340091] [2022-11-20 12:27:57,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:27:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:27:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:27:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:27:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:27:57,158 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 12:27:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:27:57,456 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2022-11-20 12:27:57,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:27:57,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) Word has length 32 [2022-11-20 12:27:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:27:57,466 INFO L225 Difference]: With dead ends: 62 [2022-11-20 12:27:57,466 INFO L226 Difference]: Without dead ends: 50 [2022-11-20 12:27:57,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:27:57,470 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:27:57,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 81 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:27:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-20 12:27:57,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-20 12:27:57,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.1) internal successors, (33), 29 states have internal predecessors, (33), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-20 12:27:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2022-11-20 12:27:57,487 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 32 [2022-11-20 12:27:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:27:57,488 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2022-11-20 12:27:57,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 9 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (9), 4 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-20 12:27:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2022-11-20 12:27:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 12:27:57,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:27:57,495 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:27:57,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:27:57,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:57,696 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:27:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:27:57,696 INFO L85 PathProgramCache]: Analyzing trace with hash 464974891, now seen corresponding path program 2 times [2022-11-20 12:27:57,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:27:57,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453938099] [2022-11-20 12:27:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:27:57,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:27:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:27:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:27:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:27:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:27:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:27:58,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:27:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:27:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 12:27:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:27:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453938099] [2022-11-20 12:27:58,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453938099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:27:58,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310402919] [2022-11-20 12:27:58,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:27:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:27:58,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:27:58,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:27:58,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:27:58,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:27:58,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:27:58,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 12:27:58,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:27:59,189 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-20 12:27:59,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:00,414 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 12:28:00,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310402919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:00,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:00,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 18] total 31 [2022-11-20 12:28:00,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321907499] [2022-11-20 12:28:00,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:00,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:28:00,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:00,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:28:00,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=821, Unknown=0, NotChecked=0, Total=930 [2022-11-20 12:28:00,418 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-20 12:28:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:02,425 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2022-11-20 12:28:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 12:28:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) Word has length 52 [2022-11-20 12:28:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:02,429 INFO L225 Difference]: With dead ends: 101 [2022-11-20 12:28:02,429 INFO L226 Difference]: Without dead ends: 97 [2022-11-20 12:28:02,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=401, Invalid=2461, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 12:28:02,431 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 133 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:02,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 168 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:28:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-20 12:28:02,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 80. [2022-11-20 12:28:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 states have internal predecessors, (49), 18 states have call successors, (18), 10 states have call predecessors, (18), 16 states have return successors, (44), 24 states have call predecessors, (44), 18 states have call successors, (44) [2022-11-20 12:28:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2022-11-20 12:28:02,454 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 52 [2022-11-20 12:28:02,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:02,455 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2022-11-20 12:28:02,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 24 states have internal predecessors, (46), 9 states have call successors, (17), 7 states have call predecessors, (17), 14 states have return successors, (20), 13 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-20 12:28:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2022-11-20 12:28:02,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 12:28:02,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:02,459 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:02,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:02,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:02,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:02,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1359329167, now seen corresponding path program 3 times [2022-11-20 12:28:02,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:02,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276888567] [2022-11-20 12:28:02,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:02,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:28:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 12:28:03,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:03,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276888567] [2022-11-20 12:28:03,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276888567] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:03,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969216140] [2022-11-20 12:28:03,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:28:03,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:03,151 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:03,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:28:03,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-20 12:28:03,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:03,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:28:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 12:28:03,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 12:28:04,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969216140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:04,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:04,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2022-11-20 12:28:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479049823] [2022-11-20 12:28:04,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:04,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:28:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:04,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:28:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:28:04,306 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2022-11-20 12:28:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:04,847 INFO L93 Difference]: Finished difference Result 142 states and 220 transitions. [2022-11-20 12:28:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:28:04,848 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) Word has length 58 [2022-11-20 12:28:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:04,850 INFO L225 Difference]: With dead ends: 142 [2022-11-20 12:28:04,851 INFO L226 Difference]: Without dead ends: 76 [2022-11-20 12:28:04,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 114 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 12:28:04,859 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 45 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:04,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 96 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:28:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-20 12:28:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2022-11-20 12:28:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 17 states have call successors, (17), 8 states have call predecessors, (17), 12 states have return successors, (35), 21 states have call predecessors, (35), 17 states have call successors, (35) [2022-11-20 12:28:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2022-11-20 12:28:04,893 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 58 [2022-11-20 12:28:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:04,894 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2022-11-20 12:28:04,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 22 states have internal predecessors, (47), 12 states have call successors, (20), 2 states have call predecessors, (20), 9 states have return successors, (21), 10 states have call predecessors, (21), 12 states have call successors, (21) [2022-11-20 12:28:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2022-11-20 12:28:04,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 12:28:04,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:04,897 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:04,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 12:28:05,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:05,103 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:05,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 296645163, now seen corresponding path program 4 times [2022-11-20 12:28:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:05,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755773563] [2022-11-20 12:28:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:28:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 42 proven. 135 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-20 12:28:05,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:05,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755773563] [2022-11-20 12:28:05,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755773563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:05,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382294906] [2022-11-20 12:28:05,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:28:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:05,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:05,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:05,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:28:05,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:28:05,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:05,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:28:05,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 125 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2022-11-20 12:28:06,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 135 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-11-20 12:28:07,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382294906] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:07,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:07,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 24 [2022-11-20 12:28:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077573888] [2022-11-20 12:28:07,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:07,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:28:07,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:28:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:28:07,217 INFO L87 Difference]: Start difference. First operand 66 states and 90 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-20 12:28:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:07,771 INFO L93 Difference]: Finished difference Result 117 states and 174 transitions. [2022-11-20 12:28:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:28:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) Word has length 92 [2022-11-20 12:28:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:07,776 INFO L225 Difference]: With dead ends: 117 [2022-11-20 12:28:07,776 INFO L226 Difference]: Without dead ends: 71 [2022-11-20 12:28:07,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 196 SyntacticMatches, 7 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 12:28:07,778 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:07,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 104 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:28:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-20 12:28:07,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2022-11-20 12:28:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (32), 19 states have call predecessors, (32), 17 states have call successors, (32) [2022-11-20 12:28:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 88 transitions. [2022-11-20 12:28:07,796 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 88 transitions. Word has length 92 [2022-11-20 12:28:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:07,797 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 88 transitions. [2022-11-20 12:28:07,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 13 states have call successors, (21), 2 states have call predecessors, (21), 9 states have return successors, (19), 7 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-20 12:28:07,797 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 88 transitions. [2022-11-20 12:28:07,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 12:28:07,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:07,800 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:07,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:28:08,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1624983153, now seen corresponding path program 5 times [2022-11-20 12:28:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481518649] [2022-11-20 12:28:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:08,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:28:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 20 proven. 161 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-20 12:28:09,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:09,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481518649] [2022-11-20 12:28:09,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481518649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:09,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254785085] [2022-11-20 12:28:09,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:28:09,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:09,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:09,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:09,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:28:10,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-11-20 12:28:10,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:10,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-20 12:28:10,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-11-20 12:28:10,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 12:28:13,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254785085] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:13,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:13,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 32] total 51 [2022-11-20 12:28:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085046164] [2022-11-20 12:28:13,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:13,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-20 12:28:13,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-20 12:28:13,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2365, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 12:28:13,632 INFO L87 Difference]: Start difference. First operand 66 states and 88 transitions. Second operand has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2022-11-20 12:28:23,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:23,502 INFO L93 Difference]: Finished difference Result 222 states and 323 transitions. [2022-11-20 12:28:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-20 12:28:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) Word has length 98 [2022-11-20 12:28:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:23,506 INFO L225 Difference]: With dead ends: 222 [2022-11-20 12:28:23,507 INFO L226 Difference]: Without dead ends: 218 [2022-11-20 12:28:23,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 202 SyntacticMatches, 12 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3331 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1686, Invalid=11196, Unknown=0, NotChecked=0, Total=12882 [2022-11-20 12:28:23,513 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 460 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 4323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:23,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 498 Invalid, 4323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1141 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 12:28:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-20 12:28:23,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 179. [2022-11-20 12:28:23,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 98 states have (on average 1.0714285714285714) internal successors, (105), 97 states have internal predecessors, (105), 47 states have call successors, (47), 27 states have call predecessors, (47), 33 states have return successors, (104), 54 states have call predecessors, (104), 47 states have call successors, (104) [2022-11-20 12:28:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 256 transitions. [2022-11-20 12:28:23,559 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 256 transitions. Word has length 98 [2022-11-20 12:28:23,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:23,560 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 256 transitions. [2022-11-20 12:28:23,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 38 states have internal predecessors, (69), 16 states have call successors, (26), 11 states have call predecessors, (26), 24 states have return successors, (33), 24 states have call predecessors, (33), 16 states have call successors, (33) [2022-11-20 12:28:23,561 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 256 transitions. [2022-11-20 12:28:23,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 12:28:23,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:23,564 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:23,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:23,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:23,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:23,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1480250389, now seen corresponding path program 6 times [2022-11-20 12:28:23,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:23,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98203816] [2022-11-20 12:28:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:28:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-20 12:28:24,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:24,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98203816] [2022-11-20 12:28:24,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98203816] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:24,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224068033] [2022-11-20 12:28:24,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:28:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:24,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:24,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:28:24,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-20 12:28:24,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:24,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:28:24,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 72 proven. 113 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-11-20 12:28:24,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 72 proven. 132 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-20 12:28:25,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224068033] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:25,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:25,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2022-11-20 12:28:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519401587] [2022-11-20 12:28:25,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:25,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:28:25,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:28:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:28:25,940 INFO L87 Difference]: Start difference. First operand 179 states and 256 transitions. Second operand has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2022-11-20 12:28:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:26,621 INFO L93 Difference]: Finished difference Result 291 states and 470 transitions. [2022-11-20 12:28:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:28:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) Word has length 104 [2022-11-20 12:28:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:26,625 INFO L225 Difference]: With dead ends: 291 [2022-11-20 12:28:26,625 INFO L226 Difference]: Without dead ends: 181 [2022-11-20 12:28:26,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=368, Invalid=1612, Unknown=0, NotChecked=0, Total=1980 [2022-11-20 12:28:26,628 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:26,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 115 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:28:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-20 12:28:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 157. [2022-11-20 12:28:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 82 states have internal predecessors, (87), 45 states have call successors, (45), 22 states have call predecessors, (45), 29 states have return successors, (88), 52 states have call predecessors, (88), 45 states have call successors, (88) [2022-11-20 12:28:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 220 transitions. [2022-11-20 12:28:26,680 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 220 transitions. Word has length 104 [2022-11-20 12:28:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:26,681 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 220 transitions. [2022-11-20 12:28:26,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.0) internal successors, (54), 26 states have internal predecessors, (54), 15 states have call successors, (24), 2 states have call predecessors, (24), 11 states have return successors, (28), 12 states have call predecessors, (28), 15 states have call successors, (28) [2022-11-20 12:28:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 220 transitions. [2022-11-20 12:28:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-20 12:28:26,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:26,687 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:26,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:26,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:26,894 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1313628785, now seen corresponding path program 7 times [2022-11-20 12:28:26,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:26,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382650262] [2022-11-20 12:28:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:28:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:28:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 229 proven. 262 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2022-11-20 12:28:27,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:27,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382650262] [2022-11-20 12:28:27,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382650262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:27,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763782099] [2022-11-20 12:28:27,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:28:27,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:27,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:27,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:27,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:28:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:28,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:28:28,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 268 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2022-11-20 12:28:28,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 281 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2022-11-20 12:28:29,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763782099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:29,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:29,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 23 [2022-11-20 12:28:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573195991] [2022-11-20 12:28:29,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:29,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:28:29,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:29,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:28:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:28:29,746 INFO L87 Difference]: Start difference. First operand 157 states and 220 transitions. Second operand has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-20 12:28:30,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:30,339 INFO L93 Difference]: Finished difference Result 248 states and 371 transitions. [2022-11-20 12:28:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:28:30,339 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) Word has length 138 [2022-11-20 12:28:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:30,343 INFO L225 Difference]: With dead ends: 248 [2022-11-20 12:28:30,343 INFO L226 Difference]: Without dead ends: 178 [2022-11-20 12:28:30,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 308 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 12:28:30,345 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:30,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 115 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:28:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-20 12:28:30,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2022-11-20 12:28:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 81 states have internal predecessors, (86), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (80), 49 states have call predecessors, (80), 45 states have call successors, (80) [2022-11-20 12:28:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-11-20 12:28:30,384 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 138 [2022-11-20 12:28:30,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:30,386 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-11-20 12:28:30,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 16 states have call successors, (30), 3 states have call predecessors, (30), 10 states have return successors, (29), 8 states have call predecessors, (29), 16 states have call successors, (29) [2022-11-20 12:28:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-11-20 12:28:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 12:28:30,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:30,392 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:30,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 12:28:30,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:30,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:30,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:30,600 INFO L85 PathProgramCache]: Analyzing trace with hash 149752433, now seen corresponding path program 8 times [2022-11-20 12:28:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:30,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022950332] [2022-11-20 12:28:30,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:28:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:28:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:31,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 107 proven. 410 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2022-11-20 12:28:31,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:31,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022950332] [2022-11-20 12:28:31,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022950332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:31,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993403540] [2022-11-20 12:28:31,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:28:31,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:31,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:31,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:31,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:28:31,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:28:31,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:31,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 12:28:31,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 396 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2022-11-20 12:28:32,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:33,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 416 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2022-11-20 12:28:33,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993403540] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:33,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:33,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 19] total 28 [2022-11-20 12:28:33,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672620635] [2022-11-20 12:28:33,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:33,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:28:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:28:33,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:28:33,875 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2022-11-20 12:28:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:28:34,662 INFO L93 Difference]: Finished difference Result 174 states and 237 transitions. [2022-11-20 12:28:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:28:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) Word has length 178 [2022-11-20 12:28:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:28:34,666 INFO L225 Difference]: With dead ends: 174 [2022-11-20 12:28:34,666 INFO L226 Difference]: Without dead ends: 170 [2022-11-20 12:28:34,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 398 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=375, Invalid=1695, Unknown=0, NotChecked=0, Total=2070 [2022-11-20 12:28:34,668 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:28:34,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 145 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:28:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-20 12:28:34,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 157. [2022-11-20 12:28:34,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 45 states have call successors, (45), 23 states have call predecessors, (45), 28 states have return successors, (81), 50 states have call predecessors, (81), 45 states have call successors, (81) [2022-11-20 12:28:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2022-11-20 12:28:34,699 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 178 [2022-11-20 12:28:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:28:34,700 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2022-11-20 12:28:34,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 16 states have call successors, (25), 2 states have call predecessors, (25), 11 states have return successors, (26), 9 states have call predecessors, (26), 16 states have call successors, (26) [2022-11-20 12:28:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2022-11-20 12:28:34,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-20 12:28:34,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:28:34,704 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:28:34,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:28:34,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:34,912 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:28:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:28:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2072776725, now seen corresponding path program 9 times [2022-11-20 12:28:34,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:28:34,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659800761] [2022-11-20 12:28:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:28:34,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:28:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:36,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:28:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:28:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:28:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:28:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:28:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:28:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:28:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:28:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 44 proven. 705 refuted. 0 times theorem prover too weak. 1351 trivial. 0 not checked. [2022-11-20 12:28:39,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:28:39,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659800761] [2022-11-20 12:28:39,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659800761] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:28:39,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408968952] [2022-11-20 12:28:39,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:28:39,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:28:39,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:28:39,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:28:39,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:28:39,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-11-20 12:28:39,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:28:39,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 175 conjunts are in the unsatisfiable core [2022-11-20 12:28:39,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:28:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-20 12:28:40,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:28:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-20 12:28:47,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408968952] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:28:47,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:28:47,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 58] total 83 [2022-11-20 12:28:47,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706502782] [2022-11-20 12:28:47,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:28:47,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-11-20 12:28:47,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:28:47,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-11-20 12:28:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=6505, Unknown=0, NotChecked=0, Total=6806 [2022-11-20 12:28:47,839 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2022-11-20 12:29:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:40,240 INFO L93 Difference]: Finished difference Result 524 states and 792 transitions. [2022-11-20 12:29:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-11-20 12:29:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) Word has length 184 [2022-11-20 12:29:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:40,247 INFO L225 Difference]: With dead ends: 524 [2022-11-20 12:29:40,247 INFO L226 Difference]: Without dead ends: 520 [2022-11-20 12:29:40,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 394 SyntacticMatches, 20 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16449 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=7719, Invalid=49641, Unknown=0, NotChecked=0, Total=57360 [2022-11-20 12:29:40,262 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1706 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 10040 mSolverCounterSat, 5145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 15185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5145 IncrementalHoareTripleChecker+Valid, 10040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:40,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 1140 Invalid, 15185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5145 Valid, 10040 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-20 12:29:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-11-20 12:29:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 437. [2022-11-20 12:29:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 236 states have (on average 1.0593220338983051) internal successors, (250), 232 states have internal predecessors, (250), 125 states have call successors, (125), 74 states have call predecessors, (125), 75 states have return successors, (256), 130 states have call predecessors, (256), 125 states have call successors, (256) [2022-11-20 12:29:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 631 transitions. [2022-11-20 12:29:40,371 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 631 transitions. Word has length 184 [2022-11-20 12:29:40,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:40,371 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 631 transitions. [2022-11-20 12:29:40,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 62 states have internal predecessors, (108), 29 states have call successors, (43), 19 states have call predecessors, (43), 40 states have return successors, (54), 41 states have call predecessors, (54), 29 states have call successors, (54) [2022-11-20 12:29:40,372 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 631 transitions. [2022-11-20 12:29:40,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-20 12:29:40,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:40,378 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:40,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:40,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:29:40,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:40,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:40,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1729878095, now seen corresponding path program 10 times [2022-11-20 12:29:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:40,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501834345] [2022-11-20 12:29:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:29:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:29:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:29:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:29:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-20 12:29:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 107 proven. 431 refuted. 0 times theorem prover too weak. 1584 trivial. 0 not checked. [2022-11-20 12:29:41,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:41,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501834345] [2022-11-20 12:29:41,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501834345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:41,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977429862] [2022-11-20 12:29:41,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:29:41,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:41,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:41,597 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:41,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:29:41,888 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:29:41,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:29:41,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:29:41,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 415 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2022-11-20 12:29:42,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:29:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 447 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-11-20 12:29:44,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977429862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:29:44,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:29:44,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2022-11-20 12:29:44,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491325740] [2022-11-20 12:29:44,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:29:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:29:44,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:44,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:29:44,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:29:44,291 INFO L87 Difference]: Start difference. First operand 437 states and 631 transitions. Second operand has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2022-11-20 12:29:45,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:45,193 INFO L93 Difference]: Finished difference Result 683 states and 1088 transitions. [2022-11-20 12:29:45,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:29:45,194 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) Word has length 190 [2022-11-20 12:29:45,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:45,229 INFO L225 Difference]: With dead ends: 683 [2022-11-20 12:29:45,229 INFO L226 Difference]: Without dead ends: 467 [2022-11-20 12:29:45,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 422 SyntacticMatches, 11 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=503, Invalid=2253, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 12:29:45,233 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:45,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 179 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:29:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-20 12:29:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 394. [2022-11-20 12:29:45,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 201 states have (on average 1.0597014925373134) internal successors, (213), 201 states have internal predecessors, (213), 119 states have call successors, (119), 59 states have call predecessors, (119), 73 states have return successors, (219), 133 states have call predecessors, (219), 119 states have call successors, (219) [2022-11-20 12:29:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 551 transitions. [2022-11-20 12:29:45,343 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 551 transitions. Word has length 190 [2022-11-20 12:29:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:45,344 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 551 transitions. [2022-11-20 12:29:45,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 18 states have call successors, (27), 2 states have call predecessors, (27), 13 states have return successors, (32), 11 states have call predecessors, (32), 18 states have call successors, (32) [2022-11-20 12:29:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 551 transitions. [2022-11-20 12:29:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-20 12:29:45,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:45,355 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:45,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:45,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:29:45,572 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:45,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1351583765, now seen corresponding path program 11 times [2022-11-20 12:29:45,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:45,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338121275] [2022-11-20 12:29:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:45,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:29:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:29:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:29:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:29:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:29:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:29:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:29:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:29:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:29:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:29:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-20 12:29:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:29:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 244 proven. 1105 refuted. 0 times theorem prover too weak. 7423 trivial. 0 not checked. [2022-11-20 12:29:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:29:47,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338121275] [2022-11-20 12:29:47,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338121275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:29:47,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133396072] [2022-11-20 12:29:47,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:29:47,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:29:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:29:47,691 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:29:47,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:29:48,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 56 check-sat command(s) [2022-11-20 12:29:48,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:29:48,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:29:48,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:29:48,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 839 proven. 501 refuted. 0 times theorem prover too weak. 7432 trivial. 0 not checked. [2022-11-20 12:29:48,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:29:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 842 proven. 533 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2022-11-20 12:29:51,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133396072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:29:51,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:29:51,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 23] total 32 [2022-11-20 12:29:51,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139769962] [2022-11-20 12:29:51,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:29:51,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:29:51,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:29:51,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:29:51,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:29:51,592 INFO L87 Difference]: Start difference. First operand 394 states and 551 transitions. Second operand has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-20 12:29:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:29:52,545 INFO L93 Difference]: Finished difference Result 529 states and 786 transitions. [2022-11-20 12:29:52,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:29:52,546 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) Word has length 344 [2022-11-20 12:29:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:29:52,552 INFO L225 Difference]: With dead ends: 529 [2022-11-20 12:29:52,553 INFO L226 Difference]: Without dead ends: 423 [2022-11-20 12:29:52,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 792 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=509, Invalid=2353, Unknown=0, NotChecked=0, Total=2862 [2022-11-20 12:29:52,555 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 90 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:29:52,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 164 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:29:52,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-20 12:29:52,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 394. [2022-11-20 12:29:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 202 states have (on average 1.0594059405940595) internal successors, (214), 202 states have internal predecessors, (214), 119 states have call successors, (119), 60 states have call predecessors, (119), 72 states have return successors, (204), 131 states have call predecessors, (204), 119 states have call successors, (204) [2022-11-20 12:29:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 537 transitions. [2022-11-20 12:29:52,661 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 537 transitions. Word has length 344 [2022-11-20 12:29:52,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:29:52,662 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 537 transitions. [2022-11-20 12:29:52,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.935483870967742) internal successors, (60), 30 states have internal predecessors, (60), 19 states have call successors, (30), 2 states have call predecessors, (30), 13 states have return successors, (36), 14 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-20 12:29:52,663 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 537 transitions. [2022-11-20 12:29:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2022-11-20 12:29:52,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:29:52,672 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:29:52,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:29:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:29:52,881 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:29:52,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:29:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -430264399, now seen corresponding path program 12 times [2022-11-20 12:29:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:29:52,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382691377] [2022-11-20 12:29:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:29:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:29:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:29:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:29:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:02,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:30:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:30:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:30:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:03,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:04,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:30:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:30:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:30:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:05,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:30:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:30:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:30:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-20 12:30:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:30:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:30:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 92 proven. 2940 refuted. 0 times theorem prover too weak. 5762 trivial. 0 not checked. [2022-11-20 12:30:06,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:30:06,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382691377] [2022-11-20 12:30:06,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382691377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:30:06,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669555076] [2022-11-20 12:30:06,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 12:30:06,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:30:06,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:30:06,583 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:30:06,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:30:07,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 56 check-sat command(s) [2022-11-20 12:30:07,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:30:07,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 339 conjunts are in the unsatisfiable core [2022-11-20 12:30:07,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:30:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2022-11-20 12:30:09,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:30:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 8644 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-20 12:30:25,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669555076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:30:25,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:30:25,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 108] total 139 [2022-11-20 12:30:25,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578796569] [2022-11-20 12:30:25,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:30:25,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-11-20 12:30:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:30:25,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-11-20 12:30:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=18689, Unknown=0, NotChecked=0, Total=19182 [2022-11-20 12:30:25,581 INFO L87 Difference]: Start difference. First operand 394 states and 537 transitions. Second operand has 139 states, 104 states have (on average 1.7211538461538463) internal successors, (179), 106 states have internal predecessors, (179), 54 states have call successors, (76), 35 states have call predecessors, (76), 68 states have return successors, (91), 70 states have call predecessors, (91), 54 states have call successors, (91) [2022-11-20 12:35:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:53,266 INFO L93 Difference]: Finished difference Result 1257 states and 1958 transitions. [2022-11-20 12:35:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 394 states. [2022-11-20 12:35:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 139 states, 104 states have (on average 1.7211538461538463) internal successors, (179), 106 states have internal predecessors, (179), 54 states have call successors, (76), 35 states have call predecessors, (76), 68 states have return successors, (91), 70 states have call predecessors, (91), 54 states have call successors, (91) Word has length 350 [2022-11-20 12:35:53,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:53,282 INFO L225 Difference]: With dead ends: 1257 [2022-11-20 12:35:53,282 INFO L226 Difference]: Without dead ends: 1253 [2022-11-20 12:35:53,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1320 GetRequests, 770 SyntacticMatches, 36 SemanticMatches, 514 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83636 ImplicationChecksByTransitivity, 297.3s TimeCoverageRelationStatistics Valid=36266, Invalid=229474, Unknown=0, NotChecked=0, Total=265740 [2022-11-20 12:35:53,325 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 7504 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 35703 mSolverCounterSat, 24266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7512 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 59969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 24266 IncrementalHoareTripleChecker+Valid, 35703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:53,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7512 Valid, 2429 Invalid, 59969 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [24266 Valid, 35703 Invalid, 0 Unknown, 0 Unchecked, 37.0s Time] [2022-11-20 12:35:53,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2022-11-20 12:35:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1082. [2022-11-20 12:35:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 581 states have (on average 1.0499139414802066) internal successors, (610), 570 states have internal predecessors, (610), 324 states have call successors, (324), 195 states have call predecessors, (324), 176 states have return successors, (644), 316 states have call predecessors, (644), 324 states have call successors, (644) [2022-11-20 12:35:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1578 transitions. [2022-11-20 12:35:53,667 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1578 transitions. Word has length 350 [2022-11-20 12:35:53,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:53,669 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1578 transitions. [2022-11-20 12:35:53,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 139 states, 104 states have (on average 1.7211538461538463) internal successors, (179), 106 states have internal predecessors, (179), 54 states have call successors, (76), 35 states have call predecessors, (76), 68 states have return successors, (91), 70 states have call predecessors, (91), 54 states have call successors, (91) [2022-11-20 12:35:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1578 transitions. [2022-11-20 12:35:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2022-11-20 12:35:53,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:53,687 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:53,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:53,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1561412011, now seen corresponding path program 13 times [2022-11-20 12:35:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:53,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664142089] [2022-11-20 12:35:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:35:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:35:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:35:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:35:55,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:35:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:35:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:35:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:35:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:35:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:35:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-20 12:35:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:35:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 244 proven. 1132 refuted. 0 times theorem prover too weak. 7446 trivial. 0 not checked. [2022-11-20 12:35:55,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664142089] [2022-11-20 12:35:55,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664142089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:55,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989538150] [2022-11-20 12:35:55,816 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 12:35:55,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:55,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:55,818 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:55,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:35:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:56,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:35:56,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 254 proven. 1112 refuted. 0 times theorem prover too weak. 7456 trivial. 0 not checked. [2022-11-20 12:35:56,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 254 proven. 1162 refuted. 0 times theorem prover too weak. 7406 trivial. 0 not checked. [2022-11-20 12:36:00,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989538150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:00,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:36:00,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 27] total 36 [2022-11-20 12:36:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013295344] [2022-11-20 12:36:00,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:00,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:36:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:00,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:36:00,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:36:00,171 INFO L87 Difference]: Start difference. First operand 1082 states and 1578 transitions. Second operand has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 34 states have internal predecessors, (68), 21 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (39), 13 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-20 12:36:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:01,501 INFO L93 Difference]: Finished difference Result 1652 states and 2596 transitions. [2022-11-20 12:36:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:36:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 34 states have internal predecessors, (68), 21 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (39), 13 states have call predecessors, (39), 21 states have call successors, (39) Word has length 356 [2022-11-20 12:36:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:01,521 INFO L225 Difference]: With dead ends: 1652 [2022-11-20 12:36:01,521 INFO L226 Difference]: Without dead ends: 1180 [2022-11-20 12:36:01,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 816 SyntacticMatches, 13 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=659, Invalid=3001, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 12:36:01,529 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 80 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:01,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 148 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:36:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-20 12:36:01,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 977. [2022-11-20 12:36:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 493 states have (on average 1.054766734279919) internal successors, (520), 493 states have internal predecessors, (520), 303 states have call successors, (303), 151 states have call predecessors, (303), 180 states have return successors, (532), 332 states have call predecessors, (532), 303 states have call successors, (532) [2022-11-20 12:36:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1355 transitions. [2022-11-20 12:36:02,000 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1355 transitions. Word has length 356 [2022-11-20 12:36:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:02,000 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1355 transitions. [2022-11-20 12:36:02,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9428571428571428) internal successors, (68), 34 states have internal predecessors, (68), 21 states have call successors, (31), 2 states have call predecessors, (31), 15 states have return successors, (39), 13 states have call predecessors, (39), 21 states have call successors, (39) [2022-11-20 12:36:02,001 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1355 transitions. [2022-11-20 12:36:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2022-11-20 12:36:02,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:02,013 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 64, 63, 63, 63, 63, 63, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:02,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:36:02,222 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash -105398351, now seen corresponding path program 14 times [2022-11-20 12:36:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:02,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439051249] [2022-11-20 12:36:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:03,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:36:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:04,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:04,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:36:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-11-20 12:36:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:36:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-11-20 12:36:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 35962 backedges. 525 proven. 2772 refuted. 0 times theorem prover too weak. 32665 trivial. 0 not checked. [2022-11-20 12:36:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439051249] [2022-11-20 12:36:05,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439051249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423806222] [2022-11-20 12:36:05,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:36:05,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:05,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:05,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:36:06,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:36:06,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:06,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:36:06,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 35962 backedges. 537 proven. 2750 refuted. 0 times theorem prover too weak. 32675 trivial. 0 not checked. [2022-11-20 12:36:06,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:11,446 INFO L134 CoverageAnalysis]: Checked inductivity of 35962 backedges. 537 proven. 2802 refuted. 0 times theorem prover too weak. 32623 trivial. 0 not checked. [2022-11-20 12:36:11,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423806222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:11,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:36:11,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 27] total 36 [2022-11-20 12:36:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840124842] [2022-11-20 12:36:11,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:11,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:36:11,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:36:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1069, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 12:36:11,449 INFO L87 Difference]: Start difference. First operand 977 states and 1355 transitions. Second operand has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 22 states have call successors, (33), 2 states have call predecessors, (33), 15 states have return successors, (40), 13 states have call predecessors, (40), 22 states have call successors, (40) [2022-11-20 12:36:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:12,870 INFO L93 Difference]: Finished difference Result 1204 states and 1757 transitions. [2022-11-20 12:36:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:36:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 22 states have call successors, (33), 2 states have call predecessors, (33), 15 states have return successors, (40), 13 states have call predecessors, (40), 22 states have call successors, (40) Word has length 670 [2022-11-20 12:36:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:12,887 INFO L225 Difference]: With dead ends: 1204 [2022-11-20 12:36:12,887 INFO L226 Difference]: Without dead ends: 1038 [2022-11-20 12:36:12,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1643 GetRequests, 1570 SyntacticMatches, 13 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=664, Invalid=3118, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 12:36:12,891 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 137 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:12,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 199 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:36:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-20 12:36:13,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 977. [2022-11-20 12:36:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 494 states have (on average 1.0546558704453441) internal successors, (521), 494 states have internal predecessors, (521), 303 states have call successors, (303), 152 states have call predecessors, (303), 179 states have return successors, (501), 330 states have call predecessors, (501), 303 states have call successors, (501) [2022-11-20 12:36:13,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1325 transitions. [2022-11-20 12:36:13,128 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1325 transitions. Word has length 670 [2022-11-20 12:36:13,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:13,129 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1325 transitions. [2022-11-20 12:36:13,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 34 states have internal predecessors, (67), 22 states have call successors, (33), 2 states have call predecessors, (33), 15 states have return successors, (40), 13 states have call predecessors, (40), 22 states have call successors, (40) [2022-11-20 12:36:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1325 transitions. [2022-11-20 12:36:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2022-11-20 12:36:13,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:13,141 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 64, 63, 63, 63, 63, 63, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:13,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:13,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:36:13,353 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash 442651051, now seen corresponding path program 15 times [2022-11-20 12:36:13,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:13,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669146234] [2022-11-20 12:36:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:13,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:36:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:38,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:36:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-11-20 12:36:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:43,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:43,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:36:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:36:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:36:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 12:36:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:36:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2022-11-20 12:36:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:36:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 188 proven. 12010 refuted. 0 times theorem prover too weak. 23792 trivial. 0 not checked. [2022-11-20 12:36:45,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:45,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669146234] [2022-11-20 12:36:45,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669146234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:45,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406584208] [2022-11-20 12:36:45,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:36:45,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:45,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:45,712 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:45,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1b0f654-197f-4e34-b929-390bbe37bdd6/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:36:47,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 101 check-sat command(s) [2022-11-20 12:36:47,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:47,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 3231 conjuncts, 663 conjunts are in the unsatisfiable core [2022-11-20 12:36:47,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:50,295 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 0 proven. 12010 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2022-11-20 12:36:50,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:37:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 0 proven. 35698 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-11-20 12:37:26,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406584208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:37:26,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:37:26,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 206] total 243 [2022-11-20 12:37:26,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509685747] [2022-11-20 12:37:26,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:37:26,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 243 states [2022-11-20 12:37:26,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 243 interpolants. [2022-11-20 12:37:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=57973, Unknown=0, NotChecked=0, Total=58806 [2022-11-20 12:37:26,273 INFO L87 Difference]: Start difference. First operand 977 states and 1325 transitions. Second operand has 243 states, 175 states have (on average 1.7942857142857143) internal successors, (314), 190 states have internal predecessors, (314), 103 states have call successors, (141), 67 states have call predecessors, (141), 120 states have return successors, (160), 123 states have call predecessors, (160), 103 states have call successors, (160)