./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqm.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:44:05,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:44:05,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:44:05,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:44:05,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:44:05,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:44:05,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:44:05,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:44:05,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:44:05,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:44:05,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:44:05,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:44:05,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:44:05,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:44:05,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:44:05,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:44:05,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:44:05,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:44:05,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:44:05,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:44:05,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:44:05,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:44:05,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:44:05,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:44:05,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:44:05,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:44:05,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:44:05,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:44:05,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:44:05,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:44:05,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:44:05,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:44:05,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:44:05,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:44:05,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:44:05,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:44:05,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:44:05,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:44:05,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:44:05,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:44:05,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:44:05,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:44:05,195 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:44:05,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:44:05,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:44:05,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:44:05,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:44:05,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:44:05,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:44:05,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:44:05,199 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:44:05,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:44:05,199 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:44:05,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:44:05,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:44:05,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:44:05,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:44:05,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:44:05,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:44:05,201 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:44:05,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:44:05,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:44:05,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:44:05,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:44:05,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:44:05,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:44:05,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:44:05,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:44:05,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:44:05,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:44:05,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:44:05,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:44:05,204 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:44:05,204 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:44:05,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:44:05,204 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_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 950fd5ff5cc9d2c5e3d846192e43f4963ef3abd0ec7056eb5d764989d48b2064 [2022-11-18 20:44:05,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:44:05,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:44:05,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:44:05,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:44:05,493 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:44:05,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/sqm.c [2022-11-18 20:44:05,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/data/8655b396a/26b3ac627d1847219e2518ce9cd8e676/FLAG0ac9e907a [2022-11-18 20:44:06,065 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:44:06,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/sv-benchmarks/c/array-fpi/sqm.c [2022-11-18 20:44:06,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/data/8655b396a/26b3ac627d1847219e2518ce9cd8e676/FLAG0ac9e907a [2022-11-18 20:44:06,457 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/data/8655b396a/26b3ac627d1847219e2518ce9cd8e676 [2022-11-18 20:44:06,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:44:06,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:44:06,467 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:44:06,467 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:44:06,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:44:06,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c536255 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06, skipping insertion in model container [2022-11-18 20:44:06,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:44:06,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:44:06,675 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-18 20:44:06,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:44:06,728 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:44:06,751 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/sv-benchmarks/c/array-fpi/sqm.c[586,599] [2022-11-18 20:44:06,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:44:06,772 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:44:06,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06 WrapperNode [2022-11-18 20:44:06,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:44:06,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:44:06,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:44:06,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:44:06,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,822 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-18 20:44:06,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:44:06,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:44:06,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:44:06,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:44:06,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,846 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:44:06,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:44:06,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:44:06,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:44:06,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (1/1) ... [2022-11-18 20:44:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:44:06,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:06,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:44:06,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:44:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:44:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:44:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:44:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:44:06,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:44:06,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:44:06,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:44:06,991 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:44:06,993 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:44:07,163 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:44:07,169 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:44:07,169 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:44:07,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:44:07 BoogieIcfgContainer [2022-11-18 20:44:07,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:44:07,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:44:07,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:44:07,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:44:07,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:44:06" (1/3) ... [2022-11-18 20:44:07,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddbc57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:44:07, skipping insertion in model container [2022-11-18 20:44:07,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:44:06" (2/3) ... [2022-11-18 20:44:07,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddbc57c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:44:07, skipping insertion in model container [2022-11-18 20:44:07,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:44:07" (3/3) ... [2022-11-18 20:44:07,182 INFO L112 eAbstractionObserver]: Analyzing ICFG sqm.c [2022-11-18 20:44:07,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:44:07,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:44:07,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:44:07,262 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;@69833a14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:44:07,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:44:07,267 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:44:07,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:07,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:07,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:07,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-11-18 20:44:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487815156] [2022-11-18 20:44:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:07,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487815156] [2022-11-18 20:44:07,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:44:07,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951656534] [2022-11-18 20:44:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:07,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:07,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:07,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:44:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:07,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:44:07,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:07,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:07,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:44:07,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951656534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:07,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:07,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:44:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722702907] [2022-11-18 20:44:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:07,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:44:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:44:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:44:07,692 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:07,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:07,708 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-18 20:44:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:44:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:44:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:07,718 INFO L225 Difference]: With dead ends: 38 [2022-11-18 20:44:07,719 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 20:44:07,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:44:07,725 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:07,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:44:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 20:44:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-18 20:44:07,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:07,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-18 20:44:07,777 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-18 20:44:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:07,778 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-18 20:44:07,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-18 20:44:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:44:07,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:07,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:07,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:07,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 20:44:07,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:07,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-11-18 20:44:07,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:07,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985589260] [2022-11-18 20:44:07,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:07,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:08,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:08,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220028403] [2022-11-18 20:44:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:08,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:08,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:44:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:08,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:44:08,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:08,223 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-18 20:44:08,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-18 20:44:08,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:08,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:08,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:44:08,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 11 [2022-11-18 20:44:08,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:44:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:08,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:44:08,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:08,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985589260] [2022-11-18 20:44:08,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:08,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220028403] [2022-11-18 20:44:08,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220028403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:08,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:08,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:44:08,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441464129] [2022-11-18 20:44:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:08,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:44:08,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:44:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:44:08,543 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:08,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:08,675 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-18 20:44:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:44:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:44:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:08,676 INFO L225 Difference]: With dead ends: 34 [2022-11-18 20:44:08,677 INFO L226 Difference]: Without dead ends: 32 [2022-11-18 20:44:08,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:44:08,679 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:08,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 56 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:08,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-18 20:44:08,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2022-11-18 20:44:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-18 20:44:08,686 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2022-11-18 20:44:08,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:08,686 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-18 20:44:08,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:08,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-18 20:44:08,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:44:08,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:08,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:08,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 20:44:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:08,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1755224028, now seen corresponding path program 1 times [2022-11-18 20:44:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:08,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652101920] [2022-11-18 20:44:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:08,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:08,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:08,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992643414] [2022-11-18 20:44:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:08,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:08,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:08,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:08,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:44:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:09,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:44:09,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:09,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:44:09,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:09,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652101920] [2022-11-18 20:44:09,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:09,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992643414] [2022-11-18 20:44:09,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992643414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:09,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:09,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:44:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084166035] [2022-11-18 20:44:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:44:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:44:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:44:09,066 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:09,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:09,154 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-18 20:44:09,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:44:09,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:44:09,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:09,158 INFO L225 Difference]: With dead ends: 49 [2022-11-18 20:44:09,158 INFO L226 Difference]: Without dead ends: 40 [2022-11-18 20:44:09,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:44:09,169 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:09,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-18 20:44:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 23. [2022-11-18 20:44:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-18 20:44:09,182 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2022-11-18 20:44:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:09,183 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-18 20:44:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-18 20:44:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:44:09,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:09,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:09,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:09,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:09,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1842440164, now seen corresponding path program 1 times [2022-11-18 20:44:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:09,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854379899] [2022-11-18 20:44:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:09,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:09,421 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:09,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038383270] [2022-11-18 20:44:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:09,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:09,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:44:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:09,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:44:09,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:09,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:09,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854379899] [2022-11-18 20:44:09,597 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:09,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038383270] [2022-11-18 20:44:09,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038383270] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:09,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:09,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2022-11-18 20:44:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851667138] [2022-11-18 20:44:09,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:09,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:44:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:44:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:44:09,601 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:09,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:09,740 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-11-18 20:44:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:44:09,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:44:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:09,742 INFO L225 Difference]: With dead ends: 44 [2022-11-18 20:44:09,743 INFO L226 Difference]: Without dead ends: 37 [2022-11-18 20:44:09,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:44:09,750 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:09,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:09,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-18 20:44:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2022-11-18 20:44:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-18 20:44:09,766 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-18 20:44:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:09,766 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-18 20:44:09,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-18 20:44:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:44:09,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:09,767 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:09,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:09,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:09,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:09,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:09,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1667884396, now seen corresponding path program 1 times [2022-11-18 20:44:09,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:09,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138832472] [2022-11-18 20:44:09,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:09,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:10,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:10,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834945658] [2022-11-18 20:44:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:10,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:10,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:10,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:10,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:44:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:10,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:44:10,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:10,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:44:10,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:10,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138832472] [2022-11-18 20:44:10,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834945658] [2022-11-18 20:44:10,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834945658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:10,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:44:10,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101369799] [2022-11-18 20:44:10,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:44:10,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:10,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:44:10,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:44:10,177 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:10,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:10,288 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-11-18 20:44:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:44:10,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:44:10,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:10,290 INFO L225 Difference]: With dead ends: 41 [2022-11-18 20:44:10,290 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 20:44:10,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:44:10,294 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:10,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 20:44:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-18 20:44:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-18 20:44:10,301 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 16 [2022-11-18 20:44:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:10,302 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-18 20:44:10,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-18 20:44:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:44:10,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:10,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:10,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 20:44:10,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:10,510 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:10,511 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-11-18 20:44:10,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:10,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466699469] [2022-11-18 20:44:10,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:10,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:10,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:10,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565031968] [2022-11-18 20:44:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:10,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:10,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:10,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:10,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:44:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:10,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:44:10,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:10,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:44:10,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:10,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-18 20:44:10,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:10,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:44:10,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:44:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:10,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:11,157 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_159 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_159) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) is different from false [2022-11-18 20:44:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:44:11,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:11,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466699469] [2022-11-18 20:44:11,176 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:11,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565031968] [2022-11-18 20:44:11,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565031968] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:11,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:11,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-18 20:44:11,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863095204] [2022-11-18 20:44:11,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:11,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:44:11,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:11,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:44:11,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2022-11-18 20:44:11,179 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:11,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:11,429 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-11-18 20:44:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:44:11,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:44:11,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:11,432 INFO L225 Difference]: With dead ends: 40 [2022-11-18 20:44:11,432 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 20:44:11,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=153, Unknown=1, NotChecked=26, Total=240 [2022-11-18 20:44:11,434 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:11,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-18 20:44:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 20:44:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2022-11-18 20:44:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-18 20:44:11,449 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-11-18 20:44:11,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:11,451 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-18 20:44:11,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-18 20:44:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:44:11,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:11,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:11,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:11,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:11,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:11,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2022-11-18 20:44:11,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:11,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024004469] [2022-11-18 20:44:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:11,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:11,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:11,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991689424] [2022-11-18 20:44:11,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:44:11,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:11,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:11,698 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:11,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:44:11,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:44:11,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:44:11,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:44:11,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:11,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:11,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024004469] [2022-11-18 20:44:11,918 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:11,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991689424] [2022-11-18 20:44:11,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991689424] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:11,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:11,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 20:44:11,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452704797] [2022-11-18 20:44:11,919 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:44:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:44:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:44:11,920 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:12,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:12,124 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-18 20:44:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:44:12,125 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:44:12,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:12,125 INFO L225 Difference]: With dead ends: 61 [2022-11-18 20:44:12,125 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:44:12,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:44:12,126 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:12,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:12,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:44:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2022-11-18 20:44:12,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-18 20:44:12,131 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2022-11-18 20:44:12,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:12,132 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-18 20:44:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:12,132 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-18 20:44:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:44:12,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:12,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:12,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:44:12,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2022-11-18 20:44:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:12,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024213295] [2022-11-18 20:44:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:12,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:12,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431633976] [2022-11-18 20:44:12,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:44:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:12,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:12,363 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:12,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:44:12,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:44:12,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:44:12,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:44:12,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:12,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:12,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024213295] [2022-11-18 20:44:12,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:12,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431633976] [2022-11-18 20:44:12,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431633976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:12,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:12,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 20:44:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119044420] [2022-11-18 20:44:12,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:12,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:44:12,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:12,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:44:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:44:12,587 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:12,764 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2022-11-18 20:44:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:44:12,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:44:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:12,765 INFO L225 Difference]: With dead ends: 56 [2022-11-18 20:44:12,765 INFO L226 Difference]: Without dead ends: 49 [2022-11-18 20:44:12,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:44:12,766 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 54 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:12,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 61 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:12,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-18 20:44:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2022-11-18 20:44:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-11-18 20:44:12,771 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2022-11-18 20:44:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:12,771 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-11-18 20:44:12,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-11-18 20:44:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:44:12,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:12,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:12,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:12,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:12,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash 798963152, now seen corresponding path program 1 times [2022-11-18 20:44:12,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:12,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165130898] [2022-11-18 20:44:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:13,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:13,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [517520320] [2022-11-18 20:44:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:13,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:13,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:13,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:44:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:13,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-18 20:44:13,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:13,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:44:13,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:13,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 20:44:13,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-18 20:44:13,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:13,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:13,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:13,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 20:44:13,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:13,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-18 20:44:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:13,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165130898] [2022-11-18 20:44:14,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:14,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517520320] [2022-11-18 20:44:14,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517520320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:14,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:14,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-18 20:44:14,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747550301] [2022-11-18 20:44:14,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:14,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:44:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:44:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:44:14,188 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:14,754 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-11-18 20:44:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:44:14,755 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:44:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:14,756 INFO L225 Difference]: With dead ends: 51 [2022-11-18 20:44:14,756 INFO L226 Difference]: Without dead ends: 49 [2022-11-18 20:44:14,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:44:14,757 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:14,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 109 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2022-11-18 20:44:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-18 20:44:14,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2022-11-18 20:44:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-18 20:44:14,764 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 20 [2022-11-18 20:44:14,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:14,764 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-18 20:44:14,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-18 20:44:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:44:14,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:14,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:14,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:44:14,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2022-11-18 20:44:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:14,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862358263] [2022-11-18 20:44:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:15,023 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:15,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940627816] [2022-11-18 20:44:15,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:44:15,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:15,030 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:15,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:44:15,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:44:15,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:44:15,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:44:15,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:15,287 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-18 20:44:15,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-18 20:44:15,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:15,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:15,358 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:44:15,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-18 20:44:15,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:44:15,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:44:15,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:15,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-18 20:44:15,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:44:15,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:44:15,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:44:15,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:15,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:15,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:44:15,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:15,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:44:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:15,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:44:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862358263] [2022-11-18 20:44:16,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940627816] [2022-11-18 20:44:16,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940627816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:16,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:16,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-18 20:44:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264119827] [2022-11-18 20:44:16,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:16,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:44:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:44:16,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=196, Unknown=3, NotChecked=0, Total=272 [2022-11-18 20:44:16,106 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:16,547 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2022-11-18 20:44:16,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:44:16,548 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:44:16,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:16,549 INFO L225 Difference]: With dead ends: 72 [2022-11-18 20:44:16,549 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 20:44:16,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=666, Unknown=4, NotChecked=0, Total=870 [2022-11-18 20:44:16,550 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 124 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:16,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 69 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-11-18 20:44:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 20:44:16,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2022-11-18 20:44:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-18 20:44:16,565 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 20 [2022-11-18 20:44:16,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:16,565 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-18 20:44:16,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 17 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:16,566 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-18 20:44:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:44:16,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:16,569 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:16,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:44:16,775 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:16,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1197174726, now seen corresponding path program 2 times [2022-11-18 20:44:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752630350] [2022-11-18 20:44:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:16,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:16,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462156091] [2022-11-18 20:44:16,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:44:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:16,795 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:16,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:44:16,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:44:16,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:44:16,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:44:16,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:44:16,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:44:17,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752630350] [2022-11-18 20:44:17,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462156091] [2022-11-18 20:44:17,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462156091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:17,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:17,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-18 20:44:17,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671067786] [2022-11-18 20:44:17,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:17,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:44:17,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:44:17,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:44:17,026 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:17,169 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2022-11-18 20:44:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:44:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:44:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:17,171 INFO L225 Difference]: With dead ends: 63 [2022-11-18 20:44:17,171 INFO L226 Difference]: Without dead ends: 43 [2022-11-18 20:44:17,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:44:17,172 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:17,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 53 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:44:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-18 20:44:17,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2022-11-18 20:44:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-18 20:44:17,178 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2022-11-18 20:44:17,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:17,178 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-18 20:44:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:17,178 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-18 20:44:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:44:17,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:17,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:17,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:17,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:17,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:17,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 3 times [2022-11-18 20:44:17,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:17,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676068378] [2022-11-18 20:44:17,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:17,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:17,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:17,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278354090] [2022-11-18 20:44:17,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:44:17,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:17,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:17,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:17,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:44:17,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:44:17,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:44:17,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:44:17,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:17,705 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-18 20:44:17,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-18 20:44:17,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 20:44:17,742 INFO L321 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2022-11-18 20:44:17,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 68 [2022-11-18 20:44:17,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:44:17,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2022-11-18 20:44:17,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:44:17,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 75 [2022-11-18 20:44:17,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:44:17,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-11-18 20:44:17,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:44:17,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:44:17,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-18 20:44:17,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:44:17,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:17,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:17,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:17,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:17,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-18 20:44:17,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:17,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 93 [2022-11-18 20:44:18,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-18 20:44:18,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 134 [2022-11-18 20:44:18,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:44:18,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-18 20:44:18,339 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:44:18,490 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:44:18,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 79 [2022-11-18 20:44:18,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:44:18,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 124 [2022-11-18 20:44:18,844 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-18 20:44:18,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 36 [2022-11-18 20:44:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:18,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:22,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:22,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676068378] [2022-11-18 20:44:22,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:44:22,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278354090] [2022-11-18 20:44:22,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278354090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:22,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:22,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2022-11-18 20:44:22,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654993096] [2022-11-18 20:44:22,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:22,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:44:22,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:22,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:44:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:44:22,895 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:23,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:23,871 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2022-11-18 20:44:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:44:23,871 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:44:23,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:23,872 INFO L225 Difference]: With dead ends: 63 [2022-11-18 20:44:23,872 INFO L226 Difference]: Without dead ends: 61 [2022-11-18 20:44:23,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:44:23,874 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:23,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 70 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 48 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-11-18 20:44:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-18 20:44:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2022-11-18 20:44:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 52 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2022-11-18 20:44:23,898 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 24 [2022-11-18 20:44:23,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:23,899 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2022-11-18 20:44:23,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:44:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2022-11-18 20:44:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:44:23,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:23,902 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:23,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:24,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:24,109 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:24,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash -900609774, now seen corresponding path program 5 times [2022-11-18 20:44:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:24,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514338985] [2022-11-18 20:44:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:24,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:24,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:44:24,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074188864] [2022-11-18 20:44:24,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:44:24,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:24,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:24,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:45:06,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:45:06,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:06,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:45:06,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:45:06,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:45:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514338985] [2022-11-18 20:45:06,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:45:06,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074188864] [2022-11-18 20:45:06,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074188864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:06,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:45:06,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 20:45:06,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851335274] [2022-11-18 20:45:06,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:45:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:45:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:45:06,397 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:06,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:06,604 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2022-11-18 20:45:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:45:06,605 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:45:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:06,605 INFO L225 Difference]: With dead ends: 102 [2022-11-18 20:45:06,606 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 20:45:06,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:45:06,607 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:06,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 62 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:45:06,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 20:45:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 51. [2022-11-18 20:45:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2022-11-18 20:45:06,618 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2022-11-18 20:45:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:06,619 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2022-11-18 20:45:06,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:06,619 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-11-18 20:45:06,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:45:06,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:06,620 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:06,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:06,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:06,830 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 6 times [2022-11-18 20:45:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:06,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527914197] [2022-11-18 20:45:06,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:06,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:06,873 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:45:06,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750747915] [2022-11-18 20:45:06,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:45:06,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:06,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:06,875 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:06,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:45:07,226 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 20:45:07,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:07,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:45:07,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:07,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:07,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:07,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527914197] [2022-11-18 20:45:07,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:45:07,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750747915] [2022-11-18 20:45:07,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750747915] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:07,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:45:07,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-18 20:45:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310277902] [2022-11-18 20:45:07,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:45:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:07,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:45:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:45:07,420 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:07,834 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2022-11-18 20:45:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:45:07,835 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-11-18 20:45:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:07,836 INFO L225 Difference]: With dead ends: 124 [2022-11-18 20:45:07,836 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 20:45:07,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:45:07,837 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 229 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:07,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 102 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:45:07,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 20:45:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 66. [2022-11-18 20:45:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 65 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2022-11-18 20:45:07,851 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 26 [2022-11-18 20:45:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:07,852 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2022-11-18 20:45:07,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2022-11-18 20:45:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:45:07,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:07,853 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:07,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:08,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:08,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash -55017726, now seen corresponding path program 4 times [2022-11-18 20:45:08,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043128719] [2022-11-18 20:45:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:08,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:45:08,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887308223] [2022-11-18 20:45:08,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:45:08,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:08,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:08,109 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:08,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:45:08,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:45:08,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:08,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 20:45:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:08,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:45:08,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 20:45:08,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-18 20:45:08,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:45:08,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:45:08,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-18 20:45:08,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:45:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-18 20:45:08,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 47 [2022-11-18 20:45:08,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-18 20:45:08,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 163 [2022-11-18 20:45:08,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:45:08,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-18 20:45:08,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 103 [2022-11-18 20:45:08,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:45:08,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:45:08,982 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-18 20:45:08,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 59 [2022-11-18 20:45:09,383 INFO L321 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-11-18 20:45:09,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 45 [2022-11-18 20:45:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:09,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:23,545 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 139 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:45:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:23,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:23,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043128719] [2022-11-18 20:45:23,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:45:23,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887308223] [2022-11-18 20:45:23,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887308223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:23,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:45:23,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2022-11-18 20:45:23,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620538430] [2022-11-18 20:45:23,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:23,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:45:23,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:45:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=501, Unknown=1, NotChecked=0, Total=600 [2022-11-18 20:45:23,571 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:26,299 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2022-11-18 20:45:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:45:26,299 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:45:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:26,300 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:45:26,300 INFO L226 Difference]: Without dead ends: 53 [2022-11-18 20:45:26,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=167, Invalid=824, Unknown=1, NotChecked=0, Total=992 [2022-11-18 20:45:26,301 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:26,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 137 Invalid, 0 Unknown, 70 Unchecked, 0.5s Time] [2022-11-18 20:45:26,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-18 20:45:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-18 20:45:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2022-11-18 20:45:26,310 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 28 [2022-11-18 20:45:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:26,310 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2022-11-18 20:45:26,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2022-11-18 20:45:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:45:26,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:26,311 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:26,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:26,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:45:26,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:26,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 48972360, now seen corresponding path program 5 times [2022-11-18 20:45:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:26,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916010403] [2022-11-18 20:45:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:26,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:45:26,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839613043] [2022-11-18 20:45:26,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:45:26,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:26,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:26,541 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:26,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:47:42,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 20:47:42,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:47:42,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 20:47:42,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:42,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:47:42,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 20:47:42,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-18 20:47:42,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:47:42,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:47:42,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-18 20:47:42,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:47:42,860 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:47:42,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-18 20:47:42,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:47:42,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:42,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-18 20:47:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 20:47:43,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2022-11-18 20:47:43,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:47:43,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-18 20:47:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 104 [2022-11-18 20:47:43,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 91 [2022-11-18 20:47:43,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 157 [2022-11-18 20:47:43,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 56 [2022-11-18 20:47:43,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:43,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-18 20:47:43,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-18 20:47:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:43,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:47:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:56,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:47:56,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916010403] [2022-11-18 20:47:56,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:47:56,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839613043] [2022-11-18 20:47:56,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839613043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:47:56,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:47:56,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 29 [2022-11-18 20:47:56,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117494083] [2022-11-18 20:47:56,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:47:56,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:47:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:47:56,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:47:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:47:56,646 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:57,761 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2022-11-18 20:47:57,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:47:57,761 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:47:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:57,764 INFO L225 Difference]: With dead ends: 88 [2022-11-18 20:47:57,764 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 20:47:57,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=205, Invalid=1055, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:47:57,765 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:57,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 82 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 72 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-11-18 20:47:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 20:47:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2022-11-18 20:47:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.144736842105263) internal successors, (87), 76 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2022-11-18 20:47:57,782 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 28 [2022-11-18 20:47:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:57,782 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2022-11-18 20:47:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2022-11-18 20:47:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:47:57,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:57,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:57,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:47:57,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:47:57,983 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:47:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 7 times [2022-11-18 20:47:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:47:57,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513790136] [2022-11-18 20:47:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:47:57,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:47:58,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:47:58,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110967912] [2022-11-18 20:47:58,004 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:47:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:47:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:47:58,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:47:58,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:47:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:47:58,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 20:47:58,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:59,053 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-18 20:47:59,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-18 20:47:59,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:47:59,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:47:59,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:47:59,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 5 [2022-11-18 20:47:59,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:47:59,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:47:59,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2022-11-18 20:47:59,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:47:59,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:47:59,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:47:59,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 20:47:59,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:47:59,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:47:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-18 20:47:59,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:47:59,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:47:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 20 [2022-11-18 20:47:59,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-11-18 20:47:59,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:47:59,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-18 20:47:59,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:59,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 20:47:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:59,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:48:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:01,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513790136] [2022-11-18 20:48:01,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:48:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110967912] [2022-11-18 20:48:01,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110967912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:48:01,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:48:01,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-18 20:48:01,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544221418] [2022-11-18 20:48:01,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:48:01,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:48:01,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:48:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=478, Unknown=4, NotChecked=0, Total=650 [2022-11-18 20:48:01,187 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:01,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:01,983 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2022-11-18 20:48:01,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:48:01,984 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:48:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:01,986 INFO L225 Difference]: With dead ends: 115 [2022-11-18 20:48:01,986 INFO L226 Difference]: Without dead ends: 113 [2022-11-18 20:48:01,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=287, Invalid=1041, Unknown=4, NotChecked=0, Total=1332 [2022-11-18 20:48:01,987 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:01,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 91 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 128 Invalid, 0 Unknown, 88 Unchecked, 0.3s Time] [2022-11-18 20:48:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-18 20:48:02,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 85. [2022-11-18 20:48:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2022-11-18 20:48:02,007 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 28 [2022-11-18 20:48:02,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:02,008 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2022-11-18 20:48:02,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 26 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:48:02,008 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2022-11-18 20:48:02,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 20:48:02,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:02,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:02,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:48:02,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:48:02,218 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 6 times [2022-11-18 20:48:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:02,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924021515] [2022-11-18 20:48:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:02,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:02,239 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:48:02,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942804008] [2022-11-18 20:48:02,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:48:02,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:48:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:02,243 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:48:02,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:48:02,830 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:48:02,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:48:02,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 20:48:02,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:48:02,880 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-18 20:48:02,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-18 20:48:02,914 INFO L321 Elim1Store]: treesize reduction 39, result has 26.4 percent of original size [2022-11-18 20:48:02,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 67 [2022-11-18 20:48:02,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:48:02,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-18 20:48:02,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:48:02,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:48:03,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:48:03,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 36 [2022-11-18 20:48:03,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:48:03,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-18 20:48:03,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:48:03,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-18 20:48:03,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 116 [2022-11-18 20:48:03,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:48:03,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 185 [2022-11-18 20:48:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 47 [2022-11-18 20:48:03,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 147 [2022-11-18 20:48:03,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:03,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 216 [2022-11-18 20:48:04,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 159 [2022-11-18 20:48:04,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:48:04,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-18 20:48:04,139 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:48:04,414 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:48:04,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 299 treesize of output 269 [2022-11-18 20:48:04,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 243 [2022-11-18 20:48:04,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 72 [2022-11-18 20:48:04,785 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:48:04,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 203 treesize of output 173 [2022-11-18 20:48:04,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:48:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 243 [2022-11-18 20:48:04,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:48:04,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 127 [2022-11-18 20:48:05,753 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2022-11-18 20:48:05,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 115 treesize of output 55 [2022-11-18 20:48:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:05,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:48:30,928 WARN L233 SmtUtils]: Spent 24.31s on a formula simplification. DAG size of input: 70 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:48:45,182 WARN L233 SmtUtils]: Spent 14.10s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:49:14,544 WARN L233 SmtUtils]: Spent 26.70s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:49:48,236 WARN L233 SmtUtils]: Spent 33.07s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:50:48,934 WARN L233 SmtUtils]: Spent 56.55s on a formula simplification that was a NOOP. DAG size: 170 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:51:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:05,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:05,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924021515] [2022-11-18 20:51:05,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:51:05,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942804008] [2022-11-18 20:51:05,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942804008] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:51:05,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:51:05,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2022-11-18 20:51:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694318106] [2022-11-18 20:51:05,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:51:05,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:51:05,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:51:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1609, Unknown=6, NotChecked=0, Total=1980 [2022-11-18 20:51:05,951 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:24,647 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification that was a NOOP. DAG size: 187 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:52:41,006 WARN L233 SmtUtils]: Spent 10.41s on a formula simplification. DAG size of input: 142 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:52:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:42,663 INFO L93 Difference]: Finished difference Result 124 states and 142 transitions. [2022-11-18 20:52:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:52:42,663 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 20:52:42,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:42,664 INFO L225 Difference]: With dead ends: 124 [2022-11-18 20:52:42,665 INFO L226 Difference]: Without dead ends: 122 [2022-11-18 20:52:42,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 274.9s TimeCoverageRelationStatistics Valid=556, Invalid=2511, Unknown=13, NotChecked=0, Total=3080 [2022-11-18 20:52:42,667 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:42,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 180 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 112 Invalid, 0 Unknown, 135 Unchecked, 0.3s Time] [2022-11-18 20:52:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-18 20:52:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2022-11-18 20:52:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.180952380952381) internal successors, (124), 105 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2022-11-18 20:52:42,705 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 32 [2022-11-18 20:52:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:42,706 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2022-11-18 20:52:42,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 45 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:42,706 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2022-11-18 20:52:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 20:52:42,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:42,707 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:42,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:42,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:52:42,915 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 917381246, now seen corresponding path program 7 times [2022-11-18 20:52:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:42,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565075852] [2022-11-18 20:52:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:42,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:52:42,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776073441] [2022-11-18 20:52:42,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:52:42,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:42,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:42,938 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:42,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:52:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:43,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:52:43,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:52:43,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:52:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:52:43,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:43,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565075852] [2022-11-18 20:52:43,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:52:43,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776073441] [2022-11-18 20:52:43,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776073441] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:52:43,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:52:43,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-18 20:52:43,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660928516] [2022-11-18 20:52:43,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:52:43,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:52:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:43,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:52:43,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:43,366 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:44,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:44,116 INFO L93 Difference]: Finished difference Result 159 states and 177 transitions. [2022-11-18 20:52:44,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:52:44,117 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 20:52:44,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:44,118 INFO L225 Difference]: With dead ends: 159 [2022-11-18 20:52:44,118 INFO L226 Difference]: Without dead ends: 116 [2022-11-18 20:52:44,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=833, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:52:44,119 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 174 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:44,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 113 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:52:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-18 20:52:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 59. [2022-11-18 20:52:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2022-11-18 20:52:44,143 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 32 [2022-11-18 20:52:44,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:44,143 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2022-11-18 20:52:44,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:52:44,144 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2022-11-18 20:52:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 20:52:44,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:44,144 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:44,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:44,345 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 8 times [2022-11-18 20:52:44,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:44,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760116491] [2022-11-18 20:52:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:44,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:44,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:52:44,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344647641] [2022-11-18 20:52:44,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:52:44,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:44,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:44,368 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:44,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:52:45,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:52:45,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:52:45,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 20:52:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:45,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:52:45,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-18 20:52:45,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-18 20:52:45,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:52:45,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:52:45,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-18 20:52:45,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:52:45,429 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:52:45,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-18 20:52:45,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:52:45,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 17 [2022-11-18 20:52:45,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2022-11-18 20:52:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 100 [2022-11-18 20:52:45,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 24 [2022-11-18 20:52:45,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 20:52:45,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 129 [2022-11-18 20:52:45,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:52:45,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:45,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 196 [2022-11-18 20:52:46,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 99 [2022-11-18 20:52:46,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2022-11-18 20:52:46,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-18 20:52:46,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 36 [2022-11-18 20:52:46,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2022-11-18 20:52:46,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 123 [2022-11-18 20:52:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:52:46,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2022-11-18 20:52:46,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2022-11-18 20:52:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:46,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:53:53,268 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 119 DAG size of output: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:53:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 31 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:53:53,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760116491] [2022-11-18 20:53:53,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:53:53,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344647641] [2022-11-18 20:53:53,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344647641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:53:53,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:53:53,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21] total 34 [2022-11-18 20:53:53,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728345318] [2022-11-18 20:53:53,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:53:53,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:53:53,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:53,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:53:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=935, Unknown=13, NotChecked=0, Total=1122 [2022-11-18 20:53:53,284 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:06,111 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2022-11-18 20:54:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:54:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 20:54:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:06,113 INFO L225 Difference]: With dead ends: 116 [2022-11-18 20:54:06,113 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 20:54:06,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 77.9s TimeCoverageRelationStatistics Valid=371, Invalid=2164, Unknown=15, NotChecked=0, Total=2550 [2022-11-18 20:54:06,114 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:06,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 90 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 151 Unchecked, 0.2s Time] [2022-11-18 20:54:06,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 20:54:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2022-11-18 20:54:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 93 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2022-11-18 20:54:06,159 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 32 [2022-11-18 20:54:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:06,159 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2022-11-18 20:54:06,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:54:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2022-11-18 20:54:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:54:06,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:06,161 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:06,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:54:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:06,370 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash -831401164, now seen corresponding path program 9 times [2022-11-18 20:54:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:06,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669268354] [2022-11-18 20:54:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:06,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:06,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:54:06,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159631545] [2022-11-18 20:54:06,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:54:06,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:54:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:54:06,421 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:54:06,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9c90f43-b86c-40d2-88aa-ab704c81f935/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:54:07,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:54:07,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:54:07,071 WARN L261 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-18 20:54:07,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:54:07,147 INFO L321 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2022-11-18 20:54:07,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 54 [2022-11-18 20:54:07,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-18 20:54:07,195 INFO L321 Elim1Store]: treesize reduction 36, result has 28.0 percent of original size [2022-11-18 20:54:07,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 64 [2022-11-18 20:54:07,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-18 20:54:07,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 20:54:07,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 36 [2022-11-18 20:54:07,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:54:07,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:54:07,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-18 20:54:07,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 109 [2022-11-18 20:54:07,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:07,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 172 [2022-11-18 20:54:07,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 42 [2022-11-18 20:54:07,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-11-18 20:54:07,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 123 [2022-11-18 20:54:07,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,863 INFO L321 Elim1Store]: treesize reduction 131, result has 0.8 percent of original size [2022-11-18 20:54:07,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 197 [2022-11-18 20:54:07,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:07,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 96 [2022-11-18 20:54:10,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 329 treesize of output 301 [2022-11-18 20:54:10,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:10,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:10,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:10,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:10,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 199 [2022-11-18 20:54:10,614 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 20:54:12,213 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:54:12,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 401 treesize of output 367 [2022-11-18 20:54:12,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 242 [2022-11-18 20:54:12,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:12,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 52 [2022-11-18 20:54:14,307 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 20:54:14,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 373 treesize of output 335 [2022-11-18 20:54:14,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:14,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 279 [2022-11-18 20:54:23,024 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:54:23,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 245 treesize of output 209 [2022-11-18 20:54:23,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:54:23,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:54:23,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 42 [2022-11-18 20:54:23,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 33 [2022-11-18 20:54:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:54:23,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:55:08,147 WARN L233 SmtUtils]: Spent 19.85s on a formula simplification. DAG size of input: 152 DAG size of output: 134 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:55:16,289 WARN L859 $PredicateComparison]: unable to prove that (or (< 4 c_~N~0) (let ((.cse47 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse45 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse46 (* .cse47 8)) (.cse26 (<= .cse47 2147483647))) (let ((.cse16 (not .cse26)) (.cse14 (+ .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse25 (+ .cse46 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse27 (* 8 .cse45)) (.cse0 (<= .cse45 2147483647))) (and (or (not .cse0) (let ((.cse15 (+ 2 (select .cse13 (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse11 (let ((.cse12 (store .cse13 .cse14 .cse15))) (store .cse12 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse12 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse11))) (let ((.cse9 (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse5 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (= (let ((.cse4 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse2 (store .cse9 .cse10 (+ .cse4 .cse5 2)))) (let ((.cse6 (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| .cse2) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse2 .cse3 (+ .cse4 .cse5 4 .cse6))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse4 .cse5 .cse6)))) 10) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse5 1)))))))) .cse16) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse23 (let ((.cse24 (store .cse13 .cse25 .cse15))) (store .cse24 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse24 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23))) (let ((.cse22 (select .cse20 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse19 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (= 10 (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse21 (store .cse22 .cse10 (+ .cse18 2 .cse19)))) (let ((.cse17 (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse17 .cse18 .cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse21 .cse3 (+ .cse17 .cse18 .cse19 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse19 1)))))))) .cse26)))) (or (let ((.cse36 (+ (select .cse13 (+ (- 34359738368) .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))) (and (or .cse16 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse34 (let ((.cse35 (store .cse13 .cse14 .cse36))) (store .cse35 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse35 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse28 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse28 1)) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse30 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse33 .cse10 (+ .cse30 2 .cse28)))) (let ((.cse29 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse29 .cse30 .cse28 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse3 (+ .cse29 .cse30 .cse28 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))))))))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse43 (let ((.cse44 (store .cse13 .cse25 .cse36))) (store .cse44 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse44 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse43))) (let ((.cse42 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse37 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse37 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse39 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse41 (store .cse42 .cse10 (+ .cse39 .cse37 2)))) (let ((.cse38 (select (select (store .cse40 |c_ULTIMATE.start_main_~a~0#1.base| .cse41) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse38 .cse39 .cse37 (select (select (store .cse40 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse41 .cse3 (+ .cse38 .cse39 .cse37 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7)))))))))))) .cse26))) .cse0))))) (not (< 3 c_~N~0))) is different from true [2022-11-18 20:55:19,259 WARN L859 $PredicateComparison]: unable to prove that (or (< 4 c_~N~0) (let ((.cse47 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse0 (<= .cse47 2147483647)) (.cse46 (* .cse47 8)) (.cse45 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse27 (<= .cse45 2147483647)) (.cse25 (+ .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse16 (not .cse0)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse10 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse14 (+ .cse46 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse26 (* .cse45 8))) (and (or (let ((.cse15 (+ 2 (select .cse13 (+ .cse26 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse11 (let ((.cse12 (store .cse13 .cse14 .cse15))) (store .cse12 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse12 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse11))) (let ((.cse9 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse1 (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= (let ((.cse6 (select .cse11 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse9 .cse10 (+ .cse1 2 .cse6)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse1 .cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse6))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse6)))) 10) (not (= .cse1 1))))))))) (or .cse16 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse23 (let ((.cse24 (store .cse13 .cse25 .cse15))) (store .cse24 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse24 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse23))) (let ((.cse22 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse22 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse21 (select .cse23 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse22 .cse10 (+ .cse18 2 .cse21)))) (let ((.cse17 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse17 .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse17 .cse18 .cse21 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse21)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1))))))))))) .cse27) (or (not .cse27) (let ((.cse36 (+ 2 (select .cse13 (+ .cse26 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse34 (let ((.cse35 (store .cse13 .cse25 .cse36))) (store .cse35 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse35 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse34))) (let ((.cse33 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse28 (select .cse33 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse28 1)) (= (let ((.cse30 (select .cse34 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse33 .cse10 (+ .cse30 2 .cse28)))) (let ((.cse29 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ .cse29 .cse30 .cse28 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse29 .cse30 .cse28 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))))) 10))))))) .cse16) (or .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse43 (let ((.cse44 (store .cse13 .cse14 .cse36))) (store .cse44 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse44 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse43))) (let ((.cse42 (select .cse37 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse40 (select .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse39 (select .cse43 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse38 (store .cse42 .cse10 (+ .cse39 .cse40 2)))) (let ((.cse41 (select (select (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))) (+ (select (select (store .cse37 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse38 .cse5 (+ .cse39 .cse40 4 .cse41))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7) .cse39 .cse40 .cse41)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse40 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))))))))))) (not (< 3 c_~N~0))) is different from true [2022-11-18 20:55:24,218 WARN L859 $PredicateComparison]: unable to prove that (or (< 4 c_~N~0) (not (< 3 c_~N~0)) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (let ((.cse74 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse75 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse71 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse29 (<= .cse75 2147483647)) (.cse73 (* .cse75 8)) (.cse72 (* .cse74 8)) (.cse17 (<= .cse74 2147483647))) (let ((.cse39 (not .cse17)) (.cse38 (+ .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse73 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (not .cse29)) (.cse13 (+ .cse72 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse41 (* 8 .cse71)) (.cse42 (<= .cse71 2147483647))) (and (or (let ((.cse40 (select .cse12 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse16 (+ .cse40 4)) (.cse14 (+ 2 .cse40))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse10 (let ((.cse11 (store (store .cse12 .cse13 .cse14) .cse15 .cse16))) (store .cse11 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse11 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse0 1)) (= (let ((.cse1 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 2 .cse0)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse1 .cse2 .cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse0))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6))))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))) .cse17) (or (let ((.cse26 (store .cse12 .cse38 .cse14))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse26 .cse27 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse23 .cse9 (+ .cse18 2 .cse22)))) (let ((.cse21 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse18 .cse21 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse21 .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1)))))))) .cse28) (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse36 (let ((.cse37 (store .cse26 .cse15 .cse16))) (store .cse37 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse37 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse35 .cse9 (+ .cse30 2 .cse34)))) (let ((.cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse30 4 .cse33 .cse34))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse33 .cse34)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse30 1))))))))))) .cse39)))) (not .cse42)) (or (let ((.cse70 (select .cse12 (+ (- 34359738368) .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse52 (+ .cse70 4)) (.cse51 (+ .cse70 2))) (and (or .cse39 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse49 (let ((.cse50 (store (store .cse12 .cse38 .cse51) .cse27 .cse52))) (store .cse50 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse50 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49))) (let ((.cse48 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse43 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse46 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse45 (store .cse48 .cse9 (+ .cse43 .cse46 2)))) (let ((.cse47 (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse45 .cse5 (+ .cse43 .cse46 .cse47 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse43 .cse46 .cse47)))))))))))) (or (let ((.cse61 (store .cse12 .cse13 .cse51))) (and (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse59 (let ((.cse60 (store .cse61 .cse15 .cse52))) (store .cse60 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse60 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse53 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse58 .cse9 (+ .cse53 2 .cse57)))) (let ((.cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse56 .cse5 (+ .cse53 .cse54 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse57)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse57 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0)))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse68 (let ((.cse69 (store .cse61 .cse27 .cse52))) (store .cse69 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse69 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68))) (let ((.cse67 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse62 1)) (= (let ((.cse63 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse65 (store .cse67 .cse9 (+ .cse63 2 .cse62)))) (let ((.cse66 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse65 .cse5 (+ .cse63 .cse66 .cse62 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse66 .cse62)))) 10))))))) .cse28))) .cse17)))) .cse42)))))) is different from true [2022-11-18 20:55:24,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:24,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:55:24,259 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 20:55:24,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2927 treesize of output 1 [2022-11-18 20:55:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-18 20:55:24,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:24,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669268354] [2022-11-18 20:55:24,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:55:24,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159631545] [2022-11-18 20:55:24,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159631545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:55:24,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:55:24,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-18 20:55:24,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67764090] [2022-11-18 20:55:24,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:55:24,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:55:24,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:55:24,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=1635, Unknown=3, NotChecked=264, Total=2256 [2022-11-18 20:55:24,269 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 48 states, 48 states have (on average 1.4583333333333333) internal successors, (70), 48 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:58:34,076 WARN L233 SmtUtils]: Spent 3.01m on a formula simplification. DAG size of input: 260 DAG size of output: 259 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:58:36,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:39,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:42,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:43,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-18 20:58:45,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:47,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:49,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-18 20:58:52,430 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (and (or (< 4 c_~N~0) (not (< 3 c_~N~0)) (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (let ((.cse74 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse75 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse71 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse29 (<= .cse75 2147483647)) (.cse73 (* .cse75 8)) (.cse72 (* .cse74 8)) (.cse17 (<= .cse74 2147483647))) (let ((.cse39 (not .cse17)) (.cse38 (+ .cse72 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (+ .cse73 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse5 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse7 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (+ .cse73 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse28 (not .cse29)) (.cse13 (+ .cse72 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse41 (* 8 .cse71)) (.cse42 (<= .cse71 2147483647))) (and (or (let ((.cse40 (select .cse12 (+ .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse16 (+ .cse40 4)) (.cse14 (+ 2 .cse40))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse10 (let ((.cse11 (store (store .cse12 .cse13 .cse14) .cse15 .cse16))) (store .cse11 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse11 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse10))) (let ((.cse8 (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse0 (select .cse8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= .cse0 1)) (= (let ((.cse1 (select .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse4 (store .cse8 .cse9 (+ .cse1 2 .cse0)))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse1 .cse2 .cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse4 .cse5 (+ .cse1 .cse2 4 .cse0))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6))))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))) .cse17) (or (let ((.cse26 (store .cse12 .cse38 .cse14))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse26 .cse27 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse19 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse18 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse20 (store .cse23 .cse9 (+ .cse18 2 .cse22)))) (let ((.cse21 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| .cse20) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse18 (select (select (store .cse19 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse20 .cse5 (+ .cse18 .cse21 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse21 .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse18 1)))))))) .cse28) (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse36 (let ((.cse37 (store .cse26 .cse15 .cse16))) (store .cse37 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse37 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse36))) (let ((.cse35 (select .cse31 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse30 (select .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse34 (select .cse36 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse32 (store .cse35 .cse9 (+ .cse30 2 .cse34)))) (let ((.cse33 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| .cse32) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse30 (select (select (store .cse31 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse32 .cse5 (+ .cse30 4 .cse33 .cse34))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse33 .cse34)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse30 1))))))))))) .cse39)))) (not .cse42)) (or (let ((.cse70 (select .cse12 (+ (- 34359738368) .cse41 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (let ((.cse52 (+ .cse70 4)) (.cse51 (+ .cse70 2))) (and (or .cse39 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse49 (let ((.cse50 (store (store .cse12 .cse38 .cse51) .cse27 .cse52))) (store .cse50 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse50 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse44 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse49))) (let ((.cse48 (select .cse44 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse43 (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse43 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= 10 (let ((.cse46 (select .cse49 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse45 (store .cse48 .cse9 (+ .cse43 .cse46 2)))) (let ((.cse47 (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| .cse45) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ (select (select (store .cse44 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse45 .cse5 (+ .cse43 .cse46 .cse47 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse43 .cse46 .cse47)))))))))))) (or (let ((.cse61 (store .cse12 .cse13 .cse51))) (and (or .cse29 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse59 (let ((.cse60 (store .cse61 .cse15 .cse52))) (store .cse60 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse60 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse59))) (let ((.cse58 (select .cse55 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse57 (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse53 (select .cse59 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse56 (store .cse58 .cse9 (+ .cse53 2 .cse57)))) (let ((.cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| .cse56) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse53 .cse54 (select (select (store .cse55 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse56 .cse5 (+ .cse53 .cse54 4 .cse57))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse57)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse57 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0)))))))) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse68 (let ((.cse69 (store .cse61 .cse27 .cse52))) (store .cse69 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse69 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse68))) (let ((.cse67 (select .cse64 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse62 (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse62 1)) (= (let ((.cse63 (select .cse68 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse65 (store .cse67 .cse9 (+ .cse63 2 .cse62)))) (let ((.cse66 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~b~0#1.base|) .cse7))) (+ .cse63 (select (select (store .cse64 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse65 .cse5 (+ .cse63 .cse66 .cse62 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse6) .cse66 .cse62)))) 10))))))) .cse28))) .cse17)))) .cse42)))))) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from true [2022-11-18 20:58:54,454 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse47 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse27 (* .cse47 8))) (let ((.cse0 (select .cse14 (+ .cse27 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (and (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= 3 .cse0) (or (< 4 c_~N~0) (let ((.cse48 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse1 (<= .cse48 2147483647)) (.cse46 (* .cse48 8))) (let ((.cse28 (<= .cse47 2147483647)) (.cse26 (+ .cse46 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse17 (not .cse1)) (.cse6 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse9 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse11 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (+ .cse46 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (or (let ((.cse16 (+ 2 (select .cse14 (+ .cse27 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse12 (let ((.cse13 (store .cse14 .cse15 .cse16))) (store .cse13 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse13 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse12))) (let ((.cse10 (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse2 (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (= (let ((.cse7 (select .cse12 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse5 (store .cse10 .cse11 (+ .cse2 2 .cse7)))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| .cse5) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ .cse2 .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse5 .cse6 (+ .cse2 .cse3 4 .cse7))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) .cse7)))) 10) (not (= .cse2 1))))))))) (or .cse17 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse24 (let ((.cse25 (store .cse14 .cse26 .cse16))) (store .cse25 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse25 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse24))) (let ((.cse23 (select .cse20 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse19 (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse22 (select .cse24 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse21 (store .cse23 .cse11 (+ .cse19 2 .cse22)))) (let ((.cse18 (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ .cse18 .cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse21 .cse6 (+ .cse18 .cse19 .cse22 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) .cse22)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse19 1))))))))))) .cse28) (or (not .cse28) (let ((.cse37 (+ 2 .cse0))) (and (or (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse35 (let ((.cse36 (store .cse14 .cse26 .cse37))) (store .cse36 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ (select .cse36 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|)) 2))))) (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse35))) (let ((.cse34 (select .cse32 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse29 (select .cse34 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0) (not (= .cse29 1)) (= (let ((.cse31 (select .cse35 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse33 (store .cse34 .cse11 (+ .cse31 2 .cse29)))) (let ((.cse30 (select (select (store .cse32 |c_ULTIMATE.start_main_~a~0#1.base| .cse33) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ .cse30 .cse31 .cse29 (select (select (store .cse32 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse33 .cse6 (+ .cse30 .cse31 .cse29 4))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8))))) 10))))))) .cse17) (or .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_228| Int)) (let ((.cse44 (let ((.cse45 (store .cse14 .cse15 .cse37))) (store .cse45 (+ (* (mod |v_ULTIMATE.start_main_~i~0#1_228| 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|) (+ 2 (select .cse45 (+ (* (mod (+ 4294967295 |v_ULTIMATE.start_main_~i~0#1_228|) 4294967296) 8) |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| .cse44))) (let ((.cse43 (select .cse38 |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse41 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (let ((.cse40 (select .cse44 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse39 (store .cse43 .cse11 (+ .cse40 .cse41 2)))) (let ((.cse42 (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| .cse39) |c_ULTIMATE.start_main_~b~0#1.base|) .cse9))) (+ (select (select (store .cse38 |c_ULTIMATE.start_main_~a~0#1.base| (store .cse39 .cse6 (+ .cse40 .cse41 4 .cse42))) |c_ULTIMATE.start_main_~b~0#1.base|) .cse8) .cse40 .cse41 .cse42)))) 10) (not (< |v_ULTIMATE.start_main_~i~0#1_228| c_~N~0)) (not (= .cse41 1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_228| 1) c_~N~0))))))))))))))) (not (< 3 c_~N~0))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (<= c_~N~0 2147483647) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= (select .cse14 (+ (* 8 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) |c_ULTIMATE.start_main_~b~0#1.offset|)) 1) (= |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from true [2022-11-18 20:59:22,960 WARN L233 SmtUtils]: Spent 20.21s on a formula simplification. DAG size of input: 159 DAG size of output: 159 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)