./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/modn.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/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_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/modn.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/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_3f866989-ab99-410e-a4d6-dc23f1ba237d/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 b1b107a3e17c36933ddc5a5cff6ab95f9f0d71df794eec32ec4a28d109efd829 --- 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 18:35:41,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:35:41,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:35:41,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:35:41,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:35:41,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:35:41,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:35:41,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:35:41,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:35:41,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:35:41,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:35:41,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:35:41,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:35:41,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:35:41,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:35:41,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:35:41,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:35:41,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:35:41,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:35:41,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:35:41,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:35:41,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:35:41,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:35:41,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:35:41,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:35:41,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:35:41,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:35:41,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:35:41,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:35:41,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:35:41,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:35:41,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:35:41,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:35:41,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:35:41,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:35:41,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:35:41,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:35:41,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:35:41,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:35:41,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:35:41,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:35:41,133 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:35:41,153 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:35:41,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:35:41,154 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:35:41,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:35:41,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:35:41,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:35:41,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:35:41,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:35:41,156 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:35:41,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:35:41,157 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:35:41,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:35:41,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:35:41,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:35:41,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:35:41,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:35:41,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:35:41,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:35:41,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:35:41,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:35:41,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:35:41,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:35:41,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:35:41,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:35:41,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:35:41,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:35:41,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:35:41,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:35:41,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:35:41,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:35:41,161 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:35:41,161 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:35:41,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:35:41,162 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_3f866989-ab99-410e-a4d6-dc23f1ba237d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1b107a3e17c36933ddc5a5cff6ab95f9f0d71df794eec32ec4a28d109efd829 [2022-11-18 18:35:41,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:35:41,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:35:41,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:35:41,450 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:35:41,451 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:35:41,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/modn.c [2022-11-18 18:35:41,531 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/a7f45c5fe/ba81fb6aef49435b9b060b596d1e5170/FLAG98415fbe4 [2022-11-18 18:35:42,073 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:35:42,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/sv-benchmarks/c/array-fpi/modn.c [2022-11-18 18:35:42,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/a7f45c5fe/ba81fb6aef49435b9b060b596d1e5170/FLAG98415fbe4 [2022-11-18 18:35:42,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/a7f45c5fe/ba81fb6aef49435b9b060b596d1e5170 [2022-11-18 18:35:42,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:35:42,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:35:42,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:35:42,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:35:42,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:35:42,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a625aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42, skipping insertion in model container [2022-11-18 18:35:42,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:35:42,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:35:42,660 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_3f866989-ab99-410e-a4d6-dc23f1ba237d/sv-benchmarks/c/array-fpi/modn.c[587,600] [2022-11-18 18:35:42,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:35:42,691 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:35:42,704 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_3f866989-ab99-410e-a4d6-dc23f1ba237d/sv-benchmarks/c/array-fpi/modn.c[587,600] [2022-11-18 18:35:42,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:35:42,724 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:35:42,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42 WrapperNode [2022-11-18 18:35:42,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:35:42,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:35:42,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:35:42,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:35:42,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,777 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2022-11-18 18:35:42,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:35:42,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:35:42,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:35:42,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:35:42,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:35:42,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:35:42,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:35:42,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:35:42,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (1/1) ... [2022-11-18 18:35:42,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:35:42,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:42,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:35:42,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:35:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:35:42,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:35:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:35:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:35:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:35:42,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:35:42,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:35:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:35:42,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:35:42,993 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:35:42,996 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:35:43,226 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:35:43,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:35:43,232 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 18:35:43,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:43 BoogieIcfgContainer [2022-11-18 18:35:43,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:35:43,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:35:43,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:35:43,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:35:43,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:35:42" (1/3) ... [2022-11-18 18:35:43,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278b745b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:35:43, skipping insertion in model container [2022-11-18 18:35:43,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:35:42" (2/3) ... [2022-11-18 18:35:43,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278b745b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:35:43, skipping insertion in model container [2022-11-18 18:35:43,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:35:43" (3/3) ... [2022-11-18 18:35:43,258 INFO L112 eAbstractionObserver]: Analyzing ICFG modn.c [2022-11-18 18:35:43,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:35:43,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:35:43,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:35:43,341 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;@a04f6a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:35:43,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:35:43,346 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 18:35:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:43,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:43,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:43,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-11-18 18:35:43,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:43,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177997054] [2022-11-18 18:35:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:43,585 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 18:35:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:43,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177997054] [2022-11-18 18:35:43,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177997054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:43,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:43,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:35:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307734014] [2022-11-18 18:35:43,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:43,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:35:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:43,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:35:43,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:35:43,626 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 18:35:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:43,642 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-18 18:35:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:35:43,644 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 18:35:43,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:43,652 INFO L225 Difference]: With dead ends: 38 [2022-11-18 18:35:43,652 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 18:35:43,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:35:43,658 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 18:35:43,659 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 18:35:43,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 18:35:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-18 18:35:43,690 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 18:35:43,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-18 18:35:43,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-18 18:35:43,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:43,692 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-18 18:35:43,693 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 18:35:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-18 18:35:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:35:43,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:43,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:43,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:35:43,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:43,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-11-18 18:35:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:43,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614278978] [2022-11-18 18:35:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:43,856 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 18:35:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614278978] [2022-11-18 18:35:43,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614278978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:35:43,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:35:43,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:35:43,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9680844] [2022-11-18 18:35:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:35:43,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:35:43,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:43,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:35:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:43,862 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:43,919 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-18 18:35:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:35:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 18:35:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:43,920 INFO L225 Difference]: With dead ends: 37 [2022-11-18 18:35:43,920 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 18:35:43,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:35:43,922 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:43,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 15 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:35:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 18:35:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-18 18:35:43,935 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 18:35:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-18 18:35:43,936 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-18 18:35:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:43,938 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-18 18:35:43,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:43,940 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-18 18:35:43,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:35:43,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:43,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:43,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:35:43,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:43,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:43,945 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-11-18 18:35:43,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:43,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148553837] [2022-11-18 18:35:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:43,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:43,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:43,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116471020] [2022-11-18 18:35:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:43,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:43,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:43,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:44,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:35:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:44,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 18:35:44,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:44,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:35:44,300 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 28 treesize of output 16 [2022-11-18 18:35:44,582 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-11-18 18:35:44,589 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 1 case distinctions, treesize of input 25 treesize of output 28 [2022-11-18 18:35:44,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-18 18:35:44,906 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 18:35:44,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:47,180 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (< c_~N~0 0)) (.cse6 (mod .cse7 c_~N~0))) (let ((.cse0 (= .cse6 0)) (.cse1 (< .cse7 0)) (.cse5 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (not .cse3))) (and (or (and (not .cse0) .cse1) (let ((.cse2 (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse5 .cse6) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)))) (and (or .cse2 .cse3) (or .cse4 .cse2)))) (or .cse0 (not .cse1) (and (or (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse5 (+ .cse6 (* (- 1) c_~N~0))) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) .cse3) (or (forall ((|ULTIMATE.start_main_~a~0#1.base| Int)) (= (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) .cse5 (+ c_~N~0 .cse6)) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) .cse4))))))) is different from false [2022-11-18 18:35:52,018 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 18:35:52,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148553837] [2022-11-18 18:35:52,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:52,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116471020] [2022-11-18 18:35:52,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116471020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:52,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:52,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-18 18:35:52,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726618204] [2022-11-18 18:35:52,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 18:35:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:35:52,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=266, Unknown=3, NotChecked=34, Total=380 [2022-11-18 18:35:52,023 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 20 states, 20 states have (on average 1.45) 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 18:35:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:52,734 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2022-11-18 18:35:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:35:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.45) 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) Word has length 16 [2022-11-18 18:35:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:52,737 INFO L225 Difference]: With dead ends: 37 [2022-11-18 18:35:52,737 INFO L226 Difference]: Without dead ends: 35 [2022-11-18 18:35:52,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=138, Invalid=415, Unknown=3, NotChecked=44, Total=600 [2022-11-18 18:35:52,739 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 26 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:52,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 63 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 43 Unchecked, 0.3s Time] [2022-11-18 18:35:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-18 18:35:52,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2022-11-18 18:35:52,750 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 18:35:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-18 18:35:52,751 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2022-11-18 18:35:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:52,752 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-18 18:35:52,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.45) 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 18:35:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-18 18:35:52,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:35:52,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:52,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:52,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:35:52,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 18:35:52,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1267903976, now seen corresponding path program 2 times [2022-11-18 18:35:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:52,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781107218] [2022-11-18 18:35:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:52,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026646759] [2022-11-18 18:35:52,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:35:52,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:52,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:53,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:53,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:35:53,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:35:53,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:53,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:35:53,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:53,223 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 18:35:53,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:53,347 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 18:35:53,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:53,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781107218] [2022-11-18 18:35:53,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:53,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026646759] [2022-11-18 18:35:53,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026646759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:53,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:53,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 18:35:53,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440275855] [2022-11-18 18:35:53,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:53,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:35:53,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:53,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:35:53,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:35:53,350 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 18:35:53,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:53,636 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-18 18:35:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:35:53,637 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 18:35:53,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:53,638 INFO L225 Difference]: With dead ends: 61 [2022-11-18 18:35:53,638 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 18:35:53,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:35:53,640 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:53,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 39 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:35:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 18:35:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 26. [2022-11-18 18:35:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 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 18:35:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-11-18 18:35:53,646 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2022-11-18 18:35:53,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:53,647 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-11-18 18:35:53,647 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 18:35:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-11-18 18:35:53,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 18:35:53,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:53,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:53,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:53,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:53,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1174519208, now seen corresponding path program 3 times [2022-11-18 18:35:53,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:53,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843996303] [2022-11-18 18:35:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:53,871 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:53,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078349986] [2022-11-18 18:35:53,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:35:53,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:53,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:53,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:35:53,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:35:53,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:35:53,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:54,249 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 18:35:54,250 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 1 case distinctions, treesize of input 104 treesize of output 83 [2022-11-18 18:35:55,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-18 18:35:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:35:55,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:55,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:35:55,504 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 187 treesize of output 165 [2022-11-18 18:35:55,837 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 34 treesize of output 28 [2022-11-18 18:35:55,848 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 24 treesize of output 22 [2022-11-18 18:35:55,900 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 32 treesize of output 26 [2022-11-18 18:35:55,910 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 26 treesize of output 24 [2022-11-18 18:35:55,972 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 25 treesize of output 21 [2022-11-18 18:35:55,981 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 24 treesize of output 22 [2022-11-18 18:35:56,005 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 25 treesize of output 21 [2022-11-18 18:35:56,014 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 24 treesize of output 22 [2022-11-18 18:35:56,039 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 22 treesize of output 18 [2022-11-18 18:35:56,048 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 24 treesize of output 22 [2022-11-18 18:35:56,089 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 22 treesize of output 18 [2022-11-18 18:35:56,098 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 24 treesize of output 22 [2022-11-18 18:35:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:35:56,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:35:56,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843996303] [2022-11-18 18:35:56,990 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:35:56,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078349986] [2022-11-18 18:35:56,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078349986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:35:56,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:35:56,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2022-11-18 18:35:56,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068770414] [2022-11-18 18:35:56,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:35:56,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:35:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:35:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:35:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:35:56,993 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 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 18:35:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:57,182 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-18 18:35:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:35:57,183 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 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 18 [2022-11-18 18:35:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:57,183 INFO L225 Difference]: With dead ends: 30 [2022-11-18 18:35:57,184 INFO L226 Difference]: Without dead ends: 25 [2022-11-18 18:35:57,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:35:57,185 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:57,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 50 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 39 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-18 18:35:57,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-18 18:35:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-11-18 18:35:57,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:35:57,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-11-18 18:35:57,190 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 18 [2022-11-18 18:35:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:57,190 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-11-18 18:35:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 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 18:35:57,191 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-11-18 18:35:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 18:35:57,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:57,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:57,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:57,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:57,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:35:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1786143722, now seen corresponding path program 4 times [2022-11-18 18:35:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:35:57,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456732213] [2022-11-18 18:35:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:57,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:35:57,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:35:57,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205231613] [2022-11-18 18:35:57,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:35:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:35:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:35:57,420 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:35:57,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:35:57,501 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:35:57,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:35:57,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 18:35:57,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:57,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:35:57,625 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 25 treesize of output 13 [2022-11-18 18:35:57,773 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 25 treesize of output 13 [2022-11-18 18:35:58,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:35:58,158 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-18 18:35:58,158 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 1 case distinctions, treesize of input 29 treesize of output 28 [2022-11-18 18:35:58,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:58,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 18:35:58,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-18 18:35:58,814 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 18:35:58,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:07,239 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:36:07,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 1 [2022-11-18 18:36:07,243 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 18:36:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456732213] [2022-11-18 18:36:07,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:36:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205231613] [2022-11-18 18:36:07,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205231613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:07,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:07,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 27 [2022-11-18 18:36:07,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371944376] [2022-11-18 18:36:07,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:07,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-18 18:36:07,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:07,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-18 18:36:07,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=583, Unknown=2, NotChecked=0, Total=702 [2022-11-18 18:36:07,247 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 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 18:36:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:11,869 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-11-18 18:36:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:36:11,870 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 18:36:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:11,871 INFO L225 Difference]: With dead ends: 51 [2022-11-18 18:36:11,871 INFO L226 Difference]: Without dead ends: 49 [2022-11-18 18:36:11,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=138, Invalid=728, Unknown=4, NotChecked=0, Total=870 [2022-11-18 18:36:11,872 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:11,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 136 Unchecked, 0.3s Time] [2022-11-18 18:36:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-18 18:36:11,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-18 18:36:11,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 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 18:36:11,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-18 18:36:11,882 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 20 [2022-11-18 18:36:11,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:11,883 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-18 18:36:11,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 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 18:36:11,883 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-18 18:36:11,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:36:11,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:11,884 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 18:36:11,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:12,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 18:36:12,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:36:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1232945932, now seen corresponding path program 1 times [2022-11-18 18:36:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:36:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487844402] [2022-11-18 18:36:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:36:12,105 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:36:12,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [159745018] [2022-11-18 18:36:12,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:12,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:36:12,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:36:12,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:36:12,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:36:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:36:12,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:12,230 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 18:36:12,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:36:12,290 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 28 treesize of output 16 [2022-11-18 18:36:12,351 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 28 treesize of output 16 [2022-11-18 18:36:12,520 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 51 treesize of output 42 [2022-11-18 18:36:12,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:12,720 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 62 treesize of output 52 [2022-11-18 18:36:21,167 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 65 treesize of output 33 [2022-11-18 18:36:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:21,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:48,076 WARN L233 SmtUtils]: Spent 22.98s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:36:51,653 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int) (v_ArrVal_173 Int)) (let ((.cse1 (mod v_ArrVal_173 ~N~0)) (.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (= (mod (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_173)))) (store .cse0 |c_ULTIMATE.start_main_~a~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse1))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0) 0) (not (= 0 .cse1)) (not (<= (+ (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 1) v_ArrVal_173))))) is different from false [2022-11-18 18:36:53,717 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int) (v_ArrVal_173 Int)) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (mod v_ArrVal_173 ~N~0))) (or (< v_ArrVal_173 (+ (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 2)) (= (mod (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_173)))) (store .cse1 |c_ULTIMATE.start_main_~a~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse2))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0) 0) (not (= 0 .cse2))))) is different from false [2022-11-18 18:36:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-18 18:36:53,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:36:53,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487844402] [2022-11-18 18:36:53,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:36:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159745018] [2022-11-18 18:36:53,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159745018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:36:53,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:53,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-18 18:36:53,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634231207] [2022-11-18 18:36:53,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:53,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:36:53,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:36:53,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:36:53,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=459, Unknown=2, NotChecked=90, Total=650 [2022-11-18 18:36:53,763 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:06,153 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:08,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:37:08,315 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2022-11-18 18:37:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:37:08,316 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 18:37:08,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:37:08,317 INFO L225 Difference]: With dead ends: 80 [2022-11-18 18:37:08,317 INFO L226 Difference]: Without dead ends: 78 [2022-11-18 18:37:08,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=119, Invalid=586, Unknown=5, NotChecked=102, Total=812 [2022-11-18 18:37:08,319 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:37:08,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 107 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 108 Unchecked, 0.4s Time] [2022-11-18 18:37:08,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-18 18:37:08,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 58. [2022-11-18 18:37:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:08,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2022-11-18 18:37:08,333 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 24 [2022-11-18 18:37:08,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:37:08,333 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2022-11-18 18:37:08,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:08,334 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2022-11-18 18:37:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 18:37:08,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:37:08,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:08,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:37:08,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:37:08,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:37:08,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:08,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1049585326, now seen corresponding path program 5 times [2022-11-18 18:37:08,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:08,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679096495] [2022-11-18 18:37:08,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:08,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:08,555 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:37:08,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287414228] [2022-11-18 18:37:08,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:37:08,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:08,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:08,557 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:08,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:37:08,650 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-18 18:37:08,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:08,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-18 18:37:08,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:08,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:37:08,710 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 18:37:08,762 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 25 treesize of output 13 [2022-11-18 18:37:08,891 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 25 treesize of output 13 [2022-11-18 18:37:09,032 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 25 treesize of output 13 [2022-11-18 18:37:09,262 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 29 treesize of output 24 [2022-11-18 18:37:09,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:09,529 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 38 treesize of output 36 [2022-11-18 18:37:09,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:09,867 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 48 [2022-11-18 18:37:10,325 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 50 treesize of output 30 [2022-11-18 18:37:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:10,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:15,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:15,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679096495] [2022-11-18 18:37:15,013 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:37:15,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287414228] [2022-11-18 18:37:15,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287414228] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:15,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:15,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-18 18:37:15,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055171576] [2022-11-18 18:37:15,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:15,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 18:37:15,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:15,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 18:37:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:37:15,016 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:37:17,997 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (< 3 c_~N~0))) (and (or (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (= (mod (+ .cse0 1) c_~N~0) 0) .cse1) (not (<= c_~N~0 0)) (or (= (mod .cse0 c_~N~0) 0) .cse1) (or (= (mod (+ .cse0 2) c_~N~0) 0) (< c_~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) .cse1) (or (< c_~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (= (mod (+ .cse0 3) c_~N~0) 0) .cse1))) is different from true [2022-11-18 18:37:28,182 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:30,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-18 18:37:35,445 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (< 3 c_~N~0))) (and (or (not (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (= (mod (+ .cse0 1) c_~N~0) 0) .cse1) (not (<= c_~N~0 0)) (or (= (mod (+ .cse0 2) c_~N~0) 0) (< c_~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) .cse1) (or (< c_~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (= (mod (+ .cse0 3) c_~N~0) 0) .cse1))) is different from true [2022-11-18 18:37:45,139 WARN L233 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:37:46,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-18 18:37:48,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-18 18:37:50,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-18 18:38:00,529 WARN L233 SmtUtils]: Spent 9.99s on a formula simplification that was a NOOP. DAG size: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:38:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:00,703 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2022-11-18 18:38:00,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:38:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 18:38:00,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:00,706 INFO L225 Difference]: With dead ends: 116 [2022-11-18 18:38:00,706 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 18:38:00,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 43.1s TimeCoverageRelationStatistics Valid=399, Invalid=2363, Unknown=2, NotChecked=206, Total=2970 [2022-11-18 18:38:00,709 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 64 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:00,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 186 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 339 Invalid, 1 Unknown, 268 Unchecked, 7.3s Time] [2022-11-18 18:38:00,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 18:38:00,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2022-11-18 18:38:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 71 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 18:38:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2022-11-18 18:38:00,737 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 24 [2022-11-18 18:38:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:00,739 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2022-11-18 18:38:00,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2022-11-18 18:38:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 18:38:00,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:00,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:00,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:00,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:00,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:00,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1983767408, now seen corresponding path program 6 times [2022-11-18 18:38:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:00,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604544935] [2022-11-18 18:38:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:00,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:38:00,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849747220] [2022-11-18 18:38:00,968 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:38:00,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:00,970 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:00,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:38:01,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-11-18 18:38:01,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:01,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:38:01,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:01,345 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 18:38:01,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:01,572 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 18:38:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604544935] [2022-11-18 18:38:01,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:38:01,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849747220] [2022-11-18 18:38:01,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849747220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:01,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:01,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-18 18:38:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947297014] [2022-11-18 18:38:01,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:01,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:38:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:38:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:38:01,574 INFO L87 Difference]: Start difference. First operand 72 states and 87 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 18:38:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:02,370 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2022-11-18 18:38:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:38:02,371 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 18:38:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:02,372 INFO L225 Difference]: With dead ends: 143 [2022-11-18 18:38:02,372 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 18:38:02,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:38:02,374 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 127 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:02,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 89 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:38:02,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 18:38:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 68. [2022-11-18 18:38:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.164179104477612) internal successors, (78), 67 states have internal predecessors, (78), 0 states have call successors, (0), 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 18:38:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2022-11-18 18:38:02,392 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 26 [2022-11-18 18:38:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:02,392 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2022-11-18 18:38:02,392 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 18:38:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2022-11-18 18:38:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 18:38:02,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:02,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:02,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:02,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 778799246, now seen corresponding path program 7 times [2022-11-18 18:38:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:02,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959024287] [2022-11-18 18:38:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:02,614 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:38:02,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [684731639] [2022-11-18 18:38:02,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:38:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:02,616 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:02,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:38:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:02,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 18:38:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:02,780 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 18:38:02,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:38:02,838 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 25 treesize of output 13 [2022-11-18 18:38:02,942 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 25 treesize of output 13 [2022-11-18 18:38:03,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 18:38:03,197 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 25 treesize of output 13 [2022-11-18 18:38:03,553 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 29 treesize of output 24 [2022-11-18 18:38:03,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:03,792 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 32 treesize of output 34 [2022-11-18 18:38:03,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:03,969 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 32 treesize of output 34 [2022-11-18 18:38:04,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:04,165 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 32 treesize of output 34 [2022-11-18 18:38:04,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2022-11-18 18:38:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:04,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:12,668 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:38:12,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 1 [2022-11-18 18:38:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 1 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 18:38:12,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:12,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959024287] [2022-11-18 18:38:12,672 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:38:12,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684731639] [2022-11-18 18:38:12,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684731639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:12,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:12,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2022-11-18 18:38:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602983344] [2022-11-18 18:38:12,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:12,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 18:38:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 18:38:12,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1217, Unknown=2, NotChecked=0, Total=1406 [2022-11-18 18:38:12,674 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand has 38 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:17,085 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2022-11-18 18:38:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:38:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 18:38:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:17,086 INFO L225 Difference]: With dead ends: 115 [2022-11-18 18:38:17,087 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 18:38:17,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=283, Invalid=1971, Unknown=2, NotChecked=0, Total=2256 [2022-11-18 18:38:17,088 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:17,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 216 Unchecked, 0.1s Time] [2022-11-18 18:38:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 18:38:17,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 75. [2022-11-18 18:38:17,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 74 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 18:38:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2022-11-18 18:38:17,107 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 28 [2022-11-18 18:38:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:17,107 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2022-11-18 18:38:17,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:17,108 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2022-11-18 18:38:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:38:17,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:17,109 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 18:38:17,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:17,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:38:17,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:17,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1146912830, now seen corresponding path program 2 times [2022-11-18 18:38:17,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:17,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821952091] [2022-11-18 18:38:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:17,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:17,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:38:17,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778582150] [2022-11-18 18:38:17,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:17,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:38:17,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:17,340 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:38:17,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:38:17,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:38:17,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:17,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 18:38:17,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:17,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:38:17,478 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 28 treesize of output 16 [2022-11-18 18:38:17,527 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 28 treesize of output 16 [2022-11-18 18:38:17,579 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 28 treesize of output 16 [2022-11-18 18:38:17,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:17,716 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 42 treesize of output 40 [2022-11-18 18:38:17,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:17,804 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 51 treesize of output 42 [2022-11-18 18:38:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:18,124 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 64 treesize of output 54 [2022-11-18 18:38:34,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:38:34,193 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 65 treesize of output 33 [2022-11-18 18:38:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:34,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:38:38,988 WARN L837 $PredicateComparison]: unable to prove that (forall ((~N~0 Int) (v_ArrVal_386 (Array Int Int))) (let ((.cse0 (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (store v_ArrVal_386 (+ .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| 4) (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_386) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0)))) (store .cse1 (+ .cse2 8 |c_ULTIMATE.start_main_~a~0#1.offset|) (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse1) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0)))))) (or (= (select .cse0 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) 0) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 0))))) is different from false [2022-11-18 18:38:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 18:38:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:52,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821952091] [2022-11-18 18:38:52,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:38:52,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778582150] [2022-11-18 18:38:52,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778582150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:38:52,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:38:52,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 33 [2022-11-18 18:38:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562240006] [2022-11-18 18:38:52,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:38:52,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 18:38:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 18:38:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=827, Unknown=8, NotChecked=60, Total=1056 [2022-11-18 18:38:52,349 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 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 18:39:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:05,734 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2022-11-18 18:39:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:39:05,734 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 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) Word has length 32 [2022-11-18 18:39:05,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:05,735 INFO L225 Difference]: With dead ends: 107 [2022-11-18 18:39:05,735 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 18:39:05,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 43.5s TimeCoverageRelationStatistics Valid=225, Invalid=1253, Unknown=8, NotChecked=74, Total=1560 [2022-11-18 18:39:05,738 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 41 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:05,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 160 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 156 Invalid, 0 Unknown, 75 Unchecked, 0.6s Time] [2022-11-18 18:39:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 18:39:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2022-11-18 18:39:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 74 states have internal predecessors, (90), 0 states have call successors, (0), 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 18:39:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2022-11-18 18:39:05,762 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 32 [2022-11-18 18:39:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:05,762 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2022-11-18 18:39:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 33 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 18:39:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2022-11-18 18:39:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:39:05,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:05,764 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 18:39:05,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 18:39:05,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:05,969 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1910230140, now seen corresponding path program 3 times [2022-11-18 18:39:05,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:05,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074424889] [2022-11-18 18:39:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:05,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:39:05,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238572983] [2022-11-18 18:39:05,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:39:05,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:05,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:05,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:05,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:39:06,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 18:39:06,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:06,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 18:39:06,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:06,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:39:06,184 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 28 treesize of output 16 [2022-11-18 18:39:06,240 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 28 treesize of output 16 [2022-11-18 18:39:06,290 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 28 treesize of output 16 [2022-11-18 18:39:06,352 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 28 treesize of output 16 [2022-11-18 18:39:06,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:06,491 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 51 treesize of output 42 [2022-11-18 18:39:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:06,711 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 69 treesize of output 59 [2022-11-18 18:39:11,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:11,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:11,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:11,464 INFO L321 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2022-11-18 18:39:11,465 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 8 case distinctions, treesize of input 106 treesize of output 112 [2022-11-18 18:39:14,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:14,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:14,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:14,426 INFO L321 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2022-11-18 18:39:14,426 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 8 case distinctions, treesize of input 106 treesize of output 112 [2022-11-18 18:39:22,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:22,480 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 65 treesize of output 33 [2022-11-18 18:39:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:39:22,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:38,314 WARN L233 SmtUtils]: Spent 13.15s on a formula simplification. DAG size of input: 81 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:39:43,221 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse23 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse11 (< .cse7 0)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse4 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse6 (+ .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_130| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_130| 1) |v_ULTIMATE.start_main_~i~0#1_129|)) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 Int) (~N~0 Int)) (let ((.cse0 (mod .cse7 ~N~0))) (let ((.cse1 (store (store (let ((.cse3 (store .cse5 .cse6 .cse0))) (store .cse3 .cse4 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (+ (* |v_ULTIMATE.start_main_~i~0#1_130| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_451) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_454))) (or (not (= .cse0 0)) (not (= (select .cse1 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse1 .cse2) 0) (< ~N~0 0))))))) (not (<= .cse8 |v_ULTIMATE.start_main_~i~0#1_130|)))) (or (forall ((v_ArrVal_454 Int) (v_ArrVal_451 Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int) (|v_ULTIMATE.start_main_~i~0#1_129| Int)) (let ((.cse9 (store (store (let ((.cse10 (store .cse5 .cse6 (mod .cse7 ~N~0)))) (store .cse10 .cse4 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse10) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (+ (* |v_ULTIMATE.start_main_~i~0#1_130| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_451) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_454))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_130| 1) |v_ULTIMATE.start_main_~i~0#1_129|)) (not (<= .cse8 |v_ULTIMATE.start_main_~i~0#1_130|)) (not (= (select .cse9 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse9 .cse2) 0) (not (< ~N~0 0))))) .cse11) (or (and (forall ((|v_ULTIMATE.start_main_~i~0#1_130| Int)) (or (not (<= .cse8 |v_ULTIMATE.start_main_~i~0#1_130|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_130| 1) |v_ULTIMATE.start_main_~i~0#1_129|)) (forall ((~N~0 Int)) (let ((.cse12 (mod .cse7 ~N~0))) (or (= .cse12 0) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 Int)) (let ((.cse13 (store (store (let ((.cse14 (store .cse5 .cse6 (+ .cse12 ~N~0)))) (store .cse14 .cse4 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (+ (* |v_ULTIMATE.start_main_~i~0#1_130| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_451) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_454))) (or (not (= (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse13 .cse2) 0)))) (not (< ~N~0 0))))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_130| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (forall ((~N~0 Int)) (let ((.cse15 (mod .cse7 ~N~0))) (or (= .cse15 0) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 Int)) (let ((.cse16 (store (store (let ((.cse17 (store .cse5 .cse6 (+ .cse15 (* (- 1) ~N~0))))) (store .cse17 .cse4 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (+ (* |v_ULTIMATE.start_main_~i~0#1_130| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_451) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_454))) (or (not (= (select .cse16 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse16 .cse2) 0)))) (< ~N~0 0)))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_130| 1) |v_ULTIMATE.start_main_~i~0#1_129|)))) (not (<= .cse8 |v_ULTIMATE.start_main_~i~0#1_130|))))) (not .cse11)) (or (forall ((v_ArrVal_454 Int) (v_ArrVal_451 Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_130| Int) (|v_ULTIMATE.start_main_~i~0#1_129| Int)) (let ((.cse18 (store (store (let ((.cse19 (store .cse5 .cse6 (mod .cse7 ~N~0)))) (store .cse19 .cse4 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse19) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (+ (* |v_ULTIMATE.start_main_~i~0#1_130| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_451) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_454))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_130| 1) |v_ULTIMATE.start_main_~i~0#1_129|)) (not (<= .cse8 |v_ULTIMATE.start_main_~i~0#1_130|)) (not (= (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse18 .cse2) 0) (< ~N~0 0)))) .cse11) (forall ((|v_ULTIMATE.start_main_~i~0#1_130| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_130| 1) |v_ULTIMATE.start_main_~i~0#1_129|)) (forall ((v_ArrVal_454 Int) (v_ArrVal_451 Int) (~N~0 Int)) (let ((.cse20 (mod .cse7 ~N~0))) (let ((.cse21 (store (store (let ((.cse22 (store .cse5 .cse6 .cse20))) (store .cse22 .cse4 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse22) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (+ (* |v_ULTIMATE.start_main_~i~0#1_130| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_451) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_129| 4)) v_ArrVal_454))) (or (not (= .cse20 0)) (not (= (select .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse21 .cse2) 0) (not (< ~N~0 0)))))))) (not (<= .cse8 |v_ULTIMATE.start_main_~i~0#1_130|))))))) is different from true [2022-11-18 18:39:51,850 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:40:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 20 refuted. 9 times theorem prover too weak. 0 trivial. 4 not checked. [2022-11-18 18:40:48,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:48,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074424889] [2022-11-18 18:40:48,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:48,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238572983] [2022-11-18 18:40:48,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238572983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:48,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:48,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 37 [2022-11-18 18:40:48,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085829043] [2022-11-18 18:40:48,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:48,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 18:40:48,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:48,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 18:40:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1048, Unknown=18, NotChecked=68, Total=1332 [2022-11-18 18:40:48,696 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 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 18:40:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:53,333 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2022-11-18 18:40:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:40:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 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) Word has length 32 [2022-11-18 18:40:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:53,335 INFO L225 Difference]: With dead ends: 88 [2022-11-18 18:40:53,335 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 18:40:53,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 99.6s TimeCoverageRelationStatistics Valid=218, Invalid=1100, Unknown=18, NotChecked=70, Total=1406 [2022-11-18 18:40:53,336 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:53,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 142 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 96 Unchecked, 0.3s Time] [2022-11-18 18:40:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 18:40:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2022-11-18 18:40:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 76 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2022-11-18 18:40:53,362 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 32 [2022-11-18 18:40:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:53,362 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2022-11-18 18:40:53,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 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 18:40:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2022-11-18 18:40:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 18:40:53,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:53,363 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:53,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:53,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:40:53,571 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:53,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1150671498, now seen corresponding path program 8 times [2022-11-18 18:40:53,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:53,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158362346] [2022-11-18 18:40:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:53,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:53,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:53,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059150217] [2022-11-18 18:40:53,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:40:53,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:53,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:53,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:53,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:40:53,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:40:53,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:53,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:40:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 18:40:53,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 18:40:54,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:54,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158362346] [2022-11-18 18:40:54,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:54,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059150217] [2022-11-18 18:40:54,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059150217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:54,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:54,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-11-18 18:40:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135545046] [2022-11-18 18:40:54,138 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:54,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:40:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:40:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:40:54,140 INFO L87 Difference]: Start difference. First operand 77 states and 92 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 18:40:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:54,602 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2022-11-18 18:40:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:40:54,602 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 32 [2022-11-18 18:40:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:54,603 INFO L225 Difference]: With dead ends: 98 [2022-11-18 18:40:54,603 INFO L226 Difference]: Without dead ends: 93 [2022-11-18 18:40:54,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:40:54,604 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:54,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 49 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:40:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-18 18:40:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2022-11-18 18:40:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 76 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:40:54,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2022-11-18 18:40:54,647 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 32 [2022-11-18 18:40:54,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:54,648 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2022-11-18 18:40:54,648 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 18:40:54,648 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2022-11-18 18:40:54,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 18:40:54,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:54,649 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:54,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 18:40:54,855 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash -660869176, now seen corresponding path program 9 times [2022-11-18 18:40:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:54,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785740488] [2022-11-18 18:40:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:54,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:54,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:54,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119095556] [2022-11-18 18:40:54,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:40:54,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:54,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:54,882 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:54,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:40:55,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 18:40:55,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:55,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:40:55,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:40:55,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 44 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 18:40:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785740488] [2022-11-18 18:40:55,514 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119095556] [2022-11-18 18:40:55,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119095556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:55,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:55,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-18 18:40:55,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130789848] [2022-11-18 18:40:55,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:55,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 18:40:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:40:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:40:55,517 INFO L87 Difference]: Start difference. First operand 77 states and 91 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 18:40:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:56,117 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2022-11-18 18:40:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:40:56,117 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 34 [2022-11-18 18:40:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:56,118 INFO L225 Difference]: With dead ends: 101 [2022-11-18 18:40:56,118 INFO L226 Difference]: Without dead ends: 96 [2022-11-18 18:40:56,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:40:56,119 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 121 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:56,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 69 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:40:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-18 18:40:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2022-11-18 18:40:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 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 18:40:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2022-11-18 18:40:56,142 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 34 [2022-11-18 18:40:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:56,142 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2022-11-18 18:40:56,142 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 18:40:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2022-11-18 18:40:56,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 18:40:56,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:56,143 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:56,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:40:56,350 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2089702010, now seen corresponding path program 10 times [2022-11-18 18:40:56,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590939538] [2022-11-18 18:40:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:56,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:56,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:56,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453013754] [2022-11-18 18:40:56,397 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:40:56,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:56,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:56,398 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:56,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:40:56,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:40:56,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:56,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:40:56,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:57,016 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 49 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:57,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 49 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:40:57,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:57,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590939538] [2022-11-18 18:40:57,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:40:57,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453013754] [2022-11-18 18:40:57,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453013754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:57,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:57,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 25 [2022-11-18 18:40:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286413526] [2022-11-18 18:40:57,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:57,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:40:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:57,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:40:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:40:57,384 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 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 18:40:59,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:59,593 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions. [2022-11-18 18:40:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:40:59,594 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 18:40:59,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:59,595 INFO L225 Difference]: With dead ends: 216 [2022-11-18 18:40:59,595 INFO L226 Difference]: Without dead ends: 193 [2022-11-18 18:40:59,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=567, Invalid=1689, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 18:40:59,597 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 228 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:59,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 399 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 18:40:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-18 18:40:59,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 85. [2022-11-18 18:40:59,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 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 18:40:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2022-11-18 18:40:59,624 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 36 [2022-11-18 18:40:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:59,625 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2022-11-18 18:40:59,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.24) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 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 18:40:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2022-11-18 18:40:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 18:40:59,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:59,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:40:59,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:59,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:40:59,827 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash -835467152, now seen corresponding path program 4 times [2022-11-18 18:40:59,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:59,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250954594] [2022-11-18 18:40:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:59,843 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:40:59,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676713567] [2022-11-18 18:40:59,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 18:40:59,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:59,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:59,844 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:59,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:40:59,946 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 18:40:59,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:40:59,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 18:40:59,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:00,084 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 18:41:00,085 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 1 case distinctions, treesize of input 142 treesize of output 109 [2022-11-18 18:41:02,833 INFO L321 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2022-11-18 18:41:02,833 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 208 treesize of output 152 [2022-11-18 18:41:07,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:07,966 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 60 treesize of output 30 [2022-11-18 18:41:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:41:08,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:12,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:12,618 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 338 treesize of output 306 [2022-11-18 18:41:14,478 INFO L321 Elim1Store]: treesize reduction 11, result has 47.6 percent of original size [2022-11-18 18:41:14,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 223 [2022-11-18 18:41:15,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 67 treesize of output 57 [2022-11-18 18:41:15,065 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:15,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 124 [2022-11-18 18:41:15,249 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 67 treesize of output 57 [2022-11-18 18:41:15,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:15,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 124 [2022-11-18 18:41:15,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:15,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:15,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:15,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:15,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:15,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 24 treesize of output 34 [2022-11-18 18:41:15,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:15,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 150 [2022-11-18 18:41:15,803 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 18:41:15,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 257 treesize of output 216 [2022-11-18 18:41:16,016 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:16,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 216 [2022-11-18 18:41:16,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:16,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:16,025 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:16,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:16,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:16,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 319 treesize of output 428 [2022-11-18 18:41:20,671 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 18:41:20,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 254 treesize of output 213 [2022-11-18 18:41:20,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 83 treesize of output 71 [2022-11-18 18:41:20,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:20,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 292 treesize of output 276 [2022-11-18 18:41:21,348 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-18 18:41:21,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 161 [2022-11-18 18:41:21,930 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 83 treesize of output 71 [2022-11-18 18:41:21,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:21,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 210 treesize of output 198 [2022-11-18 18:41:22,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:22,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 152 treesize of output 150 [2022-11-18 18:41:22,544 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:22,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 150 [2022-11-18 18:41:22,649 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 18:41:22,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 257 treesize of output 216 [2022-11-18 18:41:23,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:23,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 216 [2022-11-18 18:41:23,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:41:23,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 532 treesize of output 634 [2022-11-18 18:41:28,796 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:41:28,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:28,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250954594] [2022-11-18 18:41:28,796 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:41:28,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676713567] [2022-11-18 18:41:28,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676713567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:28,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:28,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2022-11-18 18:41:28,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034987918] [2022-11-18 18:41:28,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:28,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:41:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:41:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=511, Unknown=1, NotChecked=0, Total=600 [2022-11-18 18:41:28,798 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 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 18:41:29,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:29,691 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-18 18:41:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:41:29,692 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 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 40 [2022-11-18 18:41:29,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:29,692 INFO L225 Difference]: With dead ends: 105 [2022-11-18 18:41:29,692 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 18:41:29,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=93, Invalid=556, Unknown=1, NotChecked=0, Total=650 [2022-11-18 18:41:29,694 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 31 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:29,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 163 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 210 Invalid, 0 Unknown, 57 Unchecked, 0.7s Time] [2022-11-18 18:41:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 18:41:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2022-11-18 18:41:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1235955056179776) internal successors, (100), 89 states have internal predecessors, (100), 0 states have call successors, (0), 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 18:41:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 100 transitions. [2022-11-18 18:41:29,731 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 100 transitions. Word has length 40 [2022-11-18 18:41:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:29,731 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 100 transitions. [2022-11-18 18:41:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 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 18:41:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 100 transitions. [2022-11-18 18:41:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 18:41:29,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:29,732 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:29,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:29,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:29,939 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:29,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2034440074, now seen corresponding path program 5 times [2022-11-18 18:41:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:29,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949122366] [2022-11-18 18:41:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:29,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:29,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:41:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713624165] [2022-11-18 18:41:29,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 18:41:29,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:29,954 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:29,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 18:41:30,101 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-18 18:41:30,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:41:30,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:41:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 18:41:30,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 18:41:30,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:30,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949122366] [2022-11-18 18:41:30,830 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:41:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713624165] [2022-11-18 18:41:30,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713624165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:30,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:30,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22 [2022-11-18 18:41:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075560566] [2022-11-18 18:41:30,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:30,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:41:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:41:30,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:41:30,832 INFO L87 Difference]: Start difference. First operand 90 states and 100 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 18:41:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:31,866 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2022-11-18 18:41:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:41:31,867 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 40 [2022-11-18 18:41:31,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:31,868 INFO L225 Difference]: With dead ends: 187 [2022-11-18 18:41:31,868 INFO L226 Difference]: Without dead ends: 134 [2022-11-18 18:41:31,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:41:31,870 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 285 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:31,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 140 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:41:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-18 18:41:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 101. [2022-11-18 18:41:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.1) internal successors, (110), 100 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 18:41:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2022-11-18 18:41:31,906 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 40 [2022-11-18 18:41:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:31,906 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2022-11-18 18:41:31,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 18:41:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2022-11-18 18:41:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 18:41:31,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:31,907 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:31,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-18 18:41:32,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:41:32,114 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:32,114 INFO L85 PathProgramCache]: Analyzing trace with hash -949375060, now seen corresponding path program 6 times [2022-11-18 18:41:32,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:32,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276951774] [2022-11-18 18:41:32,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:32,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:32,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:41:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706149828] [2022-11-18 18:41:32,129 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 18:41:32,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:32,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:32,131 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:32,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 18:41:32,268 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-18 18:41:32,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:41:32,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-18 18:41:32,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:32,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:41:32,350 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 25 treesize of output 13 [2022-11-18 18:41:32,419 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 28 treesize of output 16 [2022-11-18 18:41:32,492 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 28 treesize of output 16 [2022-11-18 18:41:32,574 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 28 treesize of output 16 [2022-11-18 18:41:32,658 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 28 treesize of output 16 [2022-11-18 18:41:32,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:32,829 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 29 treesize of output 24 [2022-11-18 18:41:33,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,340 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 36 treesize of output 34 [2022-11-18 18:41:33,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,673 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 36 treesize of output 34 [2022-11-18 18:41:34,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:34,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:34,065 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 42 treesize of output 36 [2022-11-18 18:41:34,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:34,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:34,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:34,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:34,789 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 51 treesize of output 48 [2022-11-18 18:41:37,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:37,904 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 65 treesize of output 33 [2022-11-18 18:41:38,095 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:41:38,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:13,953 WARN L233 SmtUtils]: Spent 18.62s on a formula simplification. DAG size of input: 98 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:42:43,500 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:42:43,507 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:42:43,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 1 [2022-11-18 18:42:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 52 refuted. 16 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:42:43,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276951774] [2022-11-18 18:42:43,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:42:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706149828] [2022-11-18 18:42:43,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706149828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:42:43,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:43,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2022-11-18 18:42:43,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872875270] [2022-11-18 18:42:43,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:43,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 18:42:43,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:43,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 18:42:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1886, Unknown=16, NotChecked=0, Total=2162 [2022-11-18 18:42:43,511 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 47 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 47 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:43:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:43:20,612 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2022-11-18 18:43:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 18:43:20,612 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 47 states have internal predecessors, (85), 0 states have call successors, (0), 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 44 [2022-11-18 18:43:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:43:20,613 INFO L225 Difference]: With dead ends: 135 [2022-11-18 18:43:20,613 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 18:43:20,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 102.8s TimeCoverageRelationStatistics Valid=342, Invalid=2828, Unknown=22, NotChecked=0, Total=3192 [2022-11-18 18:43:20,615 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 61 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:43:20,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 281 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 216 Invalid, 0 Unknown, 199 Unchecked, 0.5s Time] [2022-11-18 18:43:20,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 18:43:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 125. [2022-11-18 18:43:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1290322580645162) internal successors, (140), 124 states have internal predecessors, (140), 0 states have call successors, (0), 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 18:43:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2022-11-18 18:43:20,658 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 44 [2022-11-18 18:43:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:43:20,659 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2022-11-18 18:43:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 47 states have internal predecessors, (85), 0 states have call successors, (0), 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 18:43:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2022-11-18 18:43:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 18:43:20,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:43:20,659 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:43:20,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:43:20,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 18:43:20,860 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:43:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:43:20,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1740648434, now seen corresponding path program 7 times [2022-11-18 18:43:20,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:43:20,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075646479] [2022-11-18 18:43:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:43:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:43:20,877 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:43:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915150770] [2022-11-18 18:43:20,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 18:43:20,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:43:20,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:43:20,879 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:43:20,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:43:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:43:21,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 18:43:21,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:43:21,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:43:21,043 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 18:43:21,079 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 28 treesize of output 16 [2022-11-18 18:43:21,141 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 28 treesize of output 16 [2022-11-18 18:43:21,200 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 28 treesize of output 16 [2022-11-18 18:43:21,261 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 28 treesize of output 16 [2022-11-18 18:43:21,330 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 28 treesize of output 16 [2022-11-18 18:43:21,400 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 28 treesize of output 16 [2022-11-18 18:43:21,539 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 51 treesize of output 42 [2022-11-18 18:43:21,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:21,765 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 36 treesize of output 34 [2022-11-18 18:43:21,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:21,926 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 64 treesize of output 54 [2022-11-18 18:43:26,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:26,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:26,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:26,732 INFO L321 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2022-11-18 18:43:26,732 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 8 case distinctions, treesize of input 104 treesize of output 110 [2022-11-18 18:43:29,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:29,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:29,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:29,567 INFO L321 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2022-11-18 18:43:29,567 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 8 case distinctions, treesize of input 104 treesize of output 110 [2022-11-18 18:43:32,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:32,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:32,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:43:32,640 INFO L321 Elim1Store]: treesize reduction 104, result has 27.3 percent of original size [2022-11-18 18:43:32,641 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 8 case distinctions, treesize of input 104 treesize of output 110 [2022-11-18 18:43:42,743 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 65 treesize of output 33 [2022-11-18 18:43:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:43:42,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:29,876 WARN L233 SmtUtils]: Spent 16.47s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:44:58,821 WARN L233 SmtUtils]: Spent 18.32s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:45:33,293 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:46:11,207 WARN L233 SmtUtils]: Spent 15.89s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:46:36,642 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse81 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse8 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (< .cse8 0)) (.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (+ .cse81 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (+ .cse81 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse9 (+ .cse81 |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse3 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (and (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse4 (store (store .cse6 .cse7 (mod .cse8 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse4) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (store (store (store (store .cse4 .cse5 (mod .cse2 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse0 .cse1) 0) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse2 0) (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (< ~N~0 0))))))) .cse10) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse12 (mod .cse8 ~N~0))) (let ((.cse14 (store (store .cse6 .cse7 .cse12) .cse9 v_ArrVal_889))) (let ((.cse13 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse14) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (let ((.cse11 (store (store (store (store .cse14 .cse5 .cse13) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse11 .cse1) 0) (not (= .cse12 0)) (not (= .cse13 0)) (not (= (select .cse11 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (< ~N~0 0)))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))))) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse17 (store (store .cse6 .cse7 (mod .cse8 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse16 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse15 (store (store (store (store .cse17 .cse5 (mod .cse16 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse15 .cse1) 0) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse16 0) (not (= (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (< ~N~0 0)))))) .cse10) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse19 (mod .cse8 ~N~0))) (let ((.cse21 (store (store .cse6 .cse7 .cse19) .cse9 v_ArrVal_889))) (let ((.cse20 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse18 (store (store (store (store .cse21 .cse5 (mod .cse20 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse18 .cse1) 0) (not (= .cse19 0)) (< .cse20 0) (not (= (select .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (< ~N~0 0))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse22 (mod .cse8 ~N~0))) (let ((.cse26 (store (store .cse6 .cse7 .cse22) .cse9 v_ArrVal_889))) (let ((.cse25 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse26) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse24 (mod .cse25 ~N~0))) (let ((.cse23 (store (store (store (store .cse26 .cse5 (+ ~N~0 .cse24)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (= .cse22 0)) (not (= (select .cse23 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= .cse24 0) (= (select .cse23 .cse1) 0) (not (< ~N~0 0)) (not (< .cse25 0))))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse27 (mod .cse8 ~N~0))) (let ((.cse31 (store (store .cse6 .cse7 .cse27) .cse9 v_ArrVal_889))) (let ((.cse30 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse31) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse29 (mod .cse30 ~N~0))) (let ((.cse28 (store (store (store (store .cse31 .cse5 (+ (* (- 1) ~N~0) .cse29)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (= .cse27 0)) (not (= (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse28 .cse1) 0) (= .cse29 0) (< ~N~0 0) (not (< .cse30 0))))))))))))))) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse35 (store (store .cse6 .cse7 (mod .cse8 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse34 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse35) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse33 (mod .cse34 ~N~0))) (let ((.cse32 (store (store (store (store .cse35 .cse5 (+ (* (- 1) ~N~0) .cse33)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (= (select .cse32 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= (select .cse32 .cse1) 0) (= .cse33 0) (< ~N~0 0) (not (< .cse34 0)))))))) .cse10) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse38 (store (store .cse6 .cse7 (mod .cse8 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse37 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse38) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (let ((.cse36 (store (store (store (store .cse38 .cse5 .cse37) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse36 .cse1) 0) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (not (= .cse37 0)) (not (= (select .cse36 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (< ~N~0 0)))))) .cse10) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse42 (store (store .cse6 .cse7 (mod .cse8 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse41 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse42) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse40 (mod .cse41 ~N~0))) (let ((.cse39 (store (store (store (store .cse42 .cse5 (+ ~N~0 .cse40)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (= (select .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= .cse40 0) (= (select .cse39 .cse1) 0) (not (< ~N~0 0)) (not (< .cse41 0)))))))) .cse10) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse44 (mod .cse8 ~N~0))) (let ((.cse46 (store (store .cse6 .cse7 .cse44) .cse9 v_ArrVal_889))) (let ((.cse45 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse46) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (let ((.cse43 (store (store (store (store .cse46 .cse5 .cse45) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse43 .cse1) 0) (not (= .cse44 0)) (not (= .cse45 0)) (not (= (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (< ~N~0 0))))))))))))) (or (not .cse10) (and (forall ((~N~0 Int)) (let ((.cse47 (mod .cse8 ~N~0))) (or (= .cse47 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse50 (store (store .cse6 .cse7 (+ .cse47 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse49 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse50) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse48 (store (store (store (store .cse50 .cse5 (mod .cse49 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse48 .cse1) 0) (not (= (select .cse48 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (< .cse49 0)))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))))) (not (< ~N~0 0))))) (forall ((~N~0 Int)) (let ((.cse56 (mod .cse8 ~N~0))) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse55 (* (- 1) ~N~0))) (let ((.cse54 (store (store .cse6 .cse7 (+ .cse56 .cse55)) .cse9 v_ArrVal_889))) (let ((.cse53 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse54) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse52 (mod .cse53 ~N~0))) (let ((.cse51 (store (store (store (store .cse54 .cse5 (+ .cse52 .cse55)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (not (= (select .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= .cse52 0) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (< .cse53 0)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= (select .cse51 .cse1) 0)))))))) (= .cse56 0) (< ~N~0 0)))) (forall ((~N~0 Int)) (let ((.cse57 (mod .cse8 ~N~0))) (or (= .cse57 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse60 (store (store .cse6 .cse7 (+ .cse57 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse59 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse60) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (let ((.cse58 (store (store (store (store .cse60 .cse5 .cse59) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse58 .cse1) 0) (not (= (select .cse58 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (= .cse59 0))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)))) (not (< ~N~0 0))))) (forall ((~N~0 Int)) (let ((.cse61 (mod .cse8 ~N~0))) (or (= .cse61 0) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse65 (store (store .cse6 .cse7 (+ .cse61 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse63 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse65) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse62 (mod .cse63 ~N~0))) (let ((.cse64 (store (store (store (store .cse65 .cse5 (+ .cse62 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (= .cse62 0) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (< .cse63 0)) (not (= (select .cse64 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= (select .cse64 .cse1) 0))))))) (not (< ~N~0 0))))) (forall ((~N~0 Int)) (let ((.cse66 (mod .cse8 ~N~0))) (or (= .cse66 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse69 (store (store .cse6 .cse7 (+ .cse66 (* (- 1) ~N~0))) .cse9 v_ArrVal_889))) (let ((.cse68 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse69) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse67 (store (store (store (store .cse69 .cse5 (mod .cse68 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse67 .cse1) 0) (< .cse68 0) (not (= (select .cse67 |c_ULTIMATE.start_main_~a~0#1.offset|) 0))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)))) (< ~N~0 0)))) (forall ((~N~0 Int)) (let ((.cse70 (mod .cse8 ~N~0))) (or (= .cse70 0) (< ~N~0 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse73 (store (store .cse6 .cse7 (+ .cse70 (* (- 1) ~N~0))) .cse9 v_ArrVal_889))) (let ((.cse72 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse73) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (let ((.cse71 (store (store (store (store .cse73 .cse5 .cse72) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse71 .cse1) 0) (not (= (select .cse71 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (= .cse72 0))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|))))))))) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse76 (store (store .cse6 .cse7 (mod .cse8 ~N~0)) .cse9 v_ArrVal_889))) (let ((.cse75 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse76) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) ~N~0))) (let ((.cse74 (store (store (store (store .cse76 .cse5 .cse75) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse74 .cse1) 0) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (not (= .cse75 0)) (not (= (select .cse74 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (< ~N~0 0))))))) .cse10) (forall ((|v_ULTIMATE.start_main_~i~0#1_276| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_275| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_274| Int)) (or (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_897 Int)) (let ((.cse78 (mod .cse8 ~N~0))) (let ((.cse80 (store (store .cse6 .cse7 .cse78) .cse9 v_ArrVal_889))) (let ((.cse79 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse80) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse77 (store (store (store (store .cse80 .cse5 (mod .cse79 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (= (select .cse77 .cse1) 0) (not (= .cse78 0)) (< .cse79 0) (not (= (select .cse77 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (< ~N~0 0)))))))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)))))) (not (<= .cse3 |v_ULTIMATE.start_main_~i~0#1_276|))))))) is different from true [2022-11-18 18:47:31,097 WARN L233 SmtUtils]: Spent 40.23s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:48:53,813 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 118 DAG size of output: 105 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:49:32,604 WARN L233 SmtUtils]: Spent 14.65s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:49:37,668 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (+ (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 2)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int)) (let ((.cse1 (mod v_ArrVal_886 ~N~0))) (let ((.cse2 (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (store .cse3 |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select .cse3 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse1) .cse4 v_ArrVal_889))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (< v_ArrVal_886 .cse0) (not (= .cse1 0)) (= (mod .cse2 ~N~0) 0) (< ~N~0 0) (not (< .cse2 0)))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse9 (store (store (select .cse10 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse4 v_ArrVal_889))) (let ((.cse6 (select (select (store .cse10 |c_ULTIMATE.start_main_~a~0#1.base| .cse9) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse7 (store (store (store (store .cse9 .cse8 (mod .cse6 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse6 0) (< v_ArrVal_886 .cse0) (not (= (select .cse7 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= (select .cse7 .cse8) 0) (< v_ArrVal_886 0) (not (< ~N~0 0)))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse11 (store (store (select .cse14 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse4 v_ArrVal_889))) (let ((.cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~a~0#1.base| .cse11) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse12 (mod .cse13 ~N~0))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< v_ArrVal_886 .cse0) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= (select (store (store (store (store .cse11 .cse8 (+ .cse12 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= .cse12 0) (not (< .cse13 0)) (not (< ~N~0 0)))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse15 (store (store (select .cse18 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse4 v_ArrVal_889))) (let ((.cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~a~0#1.base| .cse15) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse16 (mod .cse17 ~N~0))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< v_ArrVal_886 .cse0) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= (select (store (store (store (store .cse15 .cse8 (+ .cse16 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= .cse16 0) (< v_ArrVal_886 0) (not (< .cse17 0)) (not (< ~N~0 0)))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886))) (.cse20 (mod v_ArrVal_886 ~N~0))) (let ((.cse21 (store (store (select .cse22 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse20) .cse4 v_ArrVal_889))) (let ((.cse19 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse19 0) (< v_ArrVal_886 .cse0) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= .cse20 0)) (= (select (store (store (store (store .cse21 .cse8 (mod .cse19 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) .cse8) 0) (not (< ~N~0 0))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886))) (.cse24 (mod v_ArrVal_886 ~N~0))) (let ((.cse25 (store (store (select .cse26 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse24) .cse4 v_ArrVal_889))) (let ((.cse23 (select (select (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse23 0) (< v_ArrVal_886 .cse0) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= .cse24 0)) (= (select (store (store (store (store .cse25 .cse8 (mod .cse23 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) .cse8) 0) (< ~N~0 0)))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse30 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse29 (store (store (select .cse30 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse4 v_ArrVal_889))) (let ((.cse27 (select (select (store .cse30 |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse28 (store (store (store (store .cse29 .cse8 (mod .cse27 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse27 0) (< v_ArrVal_886 .cse0) (not (= (select .cse28 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= (select .cse28 .cse8) 0) (< v_ArrVal_886 0) (< ~N~0 0)))))))))) is different from false [2022-11-18 18:49:44,188 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (+ (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|) 3)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886))) (.cse2 (mod v_ArrVal_886 ~N~0))) (let ((.cse3 (store (store (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse2) .cse6 v_ArrVal_889))) (let ((.cse0 (select (select (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse3) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse0 0) (< v_ArrVal_886 .cse1) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= .cse2 0)) (= (select (store (store (store (store .cse3 .cse4 (mod .cse0 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) .cse4) 0) (< ~N~0 0)))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse8 (store (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse6 v_ArrVal_889))) (let ((.cse10 (select (select (store .cse11 |c_ULTIMATE.start_main_~a~0#1.base| .cse8) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse9 (mod .cse10 ~N~0))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< v_ArrVal_886 .cse1) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= (select (store (store (store (store .cse8 .cse4 (+ .cse9 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= .cse9 0) (not (< .cse10 0)) (not (< ~N~0 0)))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse12 (store (store (select .cse15 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse6 v_ArrVal_889))) (let ((.cse14 (select (select (store .cse15 |c_ULTIMATE.start_main_~a~0#1.base| .cse12) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse13 (mod .cse14 ~N~0))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< v_ArrVal_886 .cse1) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= (select (store (store (store (store .cse12 .cse4 (+ .cse13 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (= .cse13 0) (< v_ArrVal_886 0) (not (< .cse14 0)) (not (< ~N~0 0)))))))) (forall ((~N~0 Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int)) (let ((.cse16 (mod v_ArrVal_886 ~N~0))) (let ((.cse17 (select (select (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (store .cse18 |c_ULTIMATE.start_main_~a~0#1.base| (store (store (select .cse18 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse16) .cse6 v_ArrVal_889))) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (< v_ArrVal_886 .cse1) (not (= .cse16 0)) (= (mod .cse17 ~N~0) 0) (< ~N~0 0) (not (< .cse17 0)))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse21 (store (store (select .cse22 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse6 v_ArrVal_889))) (let ((.cse19 (select (select (store .cse22 |c_ULTIMATE.start_main_~a~0#1.base| .cse21) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse20 (store (store (store (store .cse21 .cse4 (mod .cse19 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse19 0) (< v_ArrVal_886 .cse1) (not (= (select .cse20 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= (select .cse20 .cse4) 0) (< v_ArrVal_886 0) (< ~N~0 0))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886)))) (let ((.cse25 (store (store (select .cse26 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (mod v_ArrVal_886 ~N~0)) .cse6 v_ArrVal_889))) (let ((.cse23 (select (select (store .cse26 |c_ULTIMATE.start_main_~a~0#1.base| .cse25) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse24 (store (store (store (store .cse25 .cse4 (mod .cse23 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse23 0) (< v_ArrVal_886 .cse1) (not (= (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|) 0)) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (= (select .cse24 .cse4) 0) (< v_ArrVal_886 0) (not (< ~N~0 0)))))))) (forall ((v_ArrVal_896 Int) (v_ArrVal_894 Int) (|v_ULTIMATE.start_main_~i~0#1_275| Int) (|v_ULTIMATE.start_main_~i~0#1_274| Int) (~N~0 Int) (|v_ULTIMATE.start_main_~i~0#1_276| Int) (v_ArrVal_889 Int) (v_ArrVal_886 Int) (v_ArrVal_897 Int)) (let ((.cse30 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_886))) (.cse28 (mod v_ArrVal_886 ~N~0))) (let ((.cse29 (store (store (select .cse30 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| .cse28) .cse6 v_ArrVal_889))) (let ((.cse27 (select (select (store .cse30 |c_ULTIMATE.start_main_~a~0#1.base| .cse29) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_276| 1) |v_ULTIMATE.start_main_~i~0#1_275|)) (< .cse27 0) (< v_ArrVal_886 .cse1) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_276|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_275| 1) |v_ULTIMATE.start_main_~i~0#1_274|)) (not (= .cse28 0)) (= (select (store (store (store (store .cse29 .cse4 (mod .cse27 ~N~0)) (+ (* |v_ULTIMATE.start_main_~i~0#1_276| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_894) (+ (* |v_ULTIMATE.start_main_~i~0#1_275| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_896) (+ (* |v_ULTIMATE.start_main_~i~0#1_274| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_897) .cse4) 0) (not (< ~N~0 0)))))))))) is different from false [2022-11-18 18:50:30,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-18 18:50:30,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:30,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075646479] [2022-11-18 18:50:30,745 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:30,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915150770] [2022-11-18 18:50:30,745 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 18:50:30,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:30,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:30,946 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:306) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 52 more [2022-11-18 18:50:30,950 INFO L158 Benchmark]: Toolchain (without parser) took 888503.29ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 108.4MB in the beginning and 54.4MB in the end (delta: 54.0MB). Peak memory consumption was 105.3MB. Max. memory is 16.1GB. [2022-11-18 18:50:30,950 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:50:30,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.53ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 117.8MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:50:30,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.85ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 116.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:50:30,951 INFO L158 Benchmark]: Boogie Preprocessor took 25.34ms. Allocated memory is still 142.6MB. Free memory was 115.7MB in the beginning and 114.9MB in the end (delta: 774.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:50:30,951 INFO L158 Benchmark]: RCFGBuilder took 429.59ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 102.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 18:50:30,952 INFO L158 Benchmark]: TraceAbstraction took 887713.06ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 102.3MB in the beginning and 54.4MB in the end (delta: 47.8MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2022-11-18 18:50:30,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 58.1MB in the beginning and 58.1MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.53ms. Allocated memory is still 142.6MB. Free memory was 108.1MB in the beginning and 117.8MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.85ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 116.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.34ms. Allocated memory is still 142.6MB. Free memory was 115.7MB in the beginning and 114.9MB in the end (delta: 774.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 429.59ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 102.3MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 887713.06ms. Allocated memory was 142.6MB in the beginning and 192.9MB in the end (delta: 50.3MB). Free memory was 102.3MB in the beginning and 54.4MB in the end (delta: 47.8MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/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_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/modn.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/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 b1b107a3e17c36933ddc5a5cff6ab95f9f0d71df794eec32ec4a28d109efd829 --- 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 18:50:33,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:50:33,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:50:33,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:50:33,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:50:33,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:50:33,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:50:33,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:50:33,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:50:33,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:50:33,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:50:33,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:50:33,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:50:33,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:50:33,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:50:33,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:50:33,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:50:33,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:50:33,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:50:33,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:50:33,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:50:33,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:50:33,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:50:33,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:50:33,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:50:33,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:50:33,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:50:33,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:50:33,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:50:33,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:50:33,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:50:33,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:50:33,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:50:33,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:50:33,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:50:33,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:50:33,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:50:33,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:50:33,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:50:33,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:50:33,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:50:33,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 18:50:33,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:50:33,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:50:33,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:50:33,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:50:33,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:50:33,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:50:33,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:50:33,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:50:33,349 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:50:33,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:50:33,350 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:50:33,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:50:33,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:50:33,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:50:33,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:50:33,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:50:33,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:50:33,351 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:50:33,352 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:50:33,352 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:50:33,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:50:33,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:50:33,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:50:33,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:50:33,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:50:33,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:50:33,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:50:33,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:50:33,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:50:33,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:50:33,354 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:50:33,355 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:50:33,355 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:50:33,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:50:33,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:50:33,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:50:33,356 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_3f866989-ab99-410e-a4d6-dc23f1ba237d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1b107a3e17c36933ddc5a5cff6ab95f9f0d71df794eec32ec4a28d109efd829 [2022-11-18 18:50:33,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:50:33,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:50:33,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:50:33,794 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:50:33,795 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:50:33,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-fpi/modn.c [2022-11-18 18:50:33,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/6ad83d808/65f80fda55674b63951a49d5fa9188b4/FLAG3919f7f44 [2022-11-18 18:50:34,448 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:50:34,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/sv-benchmarks/c/array-fpi/modn.c [2022-11-18 18:50:34,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/6ad83d808/65f80fda55674b63951a49d5fa9188b4/FLAG3919f7f44 [2022-11-18 18:50:34,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/data/6ad83d808/65f80fda55674b63951a49d5fa9188b4 [2022-11-18 18:50:34,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:50:34,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:50:34,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:50:34,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:50:34,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:50:34,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:50:34" (1/1) ... [2022-11-18 18:50:34,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b7eccf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:34, skipping insertion in model container [2022-11-18 18:50:34,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:50:34" (1/1) ... [2022-11-18 18:50:34,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:50:34,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:50:35,061 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_3f866989-ab99-410e-a4d6-dc23f1ba237d/sv-benchmarks/c/array-fpi/modn.c[587,600] [2022-11-18 18:50:35,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:50:35,112 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:50:35,133 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_3f866989-ab99-410e-a4d6-dc23f1ba237d/sv-benchmarks/c/array-fpi/modn.c[587,600] [2022-11-18 18:50:35,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:50:35,157 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:50:35,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35 WrapperNode [2022-11-18 18:50:35,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:50:35,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:50:35,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:50:35,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:50:35,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,192 INFO L138 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2022-11-18 18:50:35,192 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:50:35,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:50:35,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:50:35,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:50:35,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,218 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:50:35,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:50:35,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:50:35,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:50:35,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (1/1) ... [2022-11-18 18:50:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:50:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:35,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:50:35,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:50:35,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:50:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:50:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:50:35,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:50:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 18:50:35,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:50:35,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:50:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:50:35,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 18:50:35,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:50:35,407 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:50:35,643 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:50:35,649 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:50:35,649 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 18:50:35,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:50:35 BoogieIcfgContainer [2022-11-18 18:50:35,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:50:35,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:50:35,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:50:35,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:50:35,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:50:34" (1/3) ... [2022-11-18 18:50:35,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba9de33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:50:35, skipping insertion in model container [2022-11-18 18:50:35,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:50:35" (2/3) ... [2022-11-18 18:50:35,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba9de33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:50:35, skipping insertion in model container [2022-11-18 18:50:35,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:50:35" (3/3) ... [2022-11-18 18:50:35,661 INFO L112 eAbstractionObserver]: Analyzing ICFG modn.c [2022-11-18 18:50:35,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:50:35,691 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:50:35,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:50:35,751 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;@690e701e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:50:35,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:50:35,756 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 18:50:35,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:50:35,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:35,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:35,783 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:35,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2022-11-18 18:50:35,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:50:35,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562995476] [2022-11-18 18:50:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:50:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:50:35,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:50:35,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:50:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:35,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:50:35,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:36,007 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 18:50:36,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:36,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:50:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562995476] [2022-11-18 18:50:36,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562995476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:36,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:36,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:50:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266137773] [2022-11-18 18:50:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:36,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:50:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:50:36,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:50:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:50:36,051 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 18:50:36,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:36,073 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2022-11-18 18:50:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:50:36,080 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 18:50:36,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:36,088 INFO L225 Difference]: With dead ends: 38 [2022-11-18 18:50:36,088 INFO L226 Difference]: Without dead ends: 17 [2022-11-18 18:50:36,092 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 18:50:36,096 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 18:50:36,097 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 18:50:36,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-18 18:50:36,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-18 18:50:36,122 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 18:50:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-18 18:50:36,124 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2022-11-18 18:50:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:36,124 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-18 18:50:36,125 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 18:50:36,125 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-18 18:50:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 18:50:36,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:36,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:36,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-18 18:50:36,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:50:36,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2022-11-18 18:50:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:50:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345059296] [2022-11-18 18:50:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:36,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:50:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:50:36,336 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:50:36,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:50:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:36,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:50:36,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:36,642 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 18:50:36,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:36,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:50:36,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345059296] [2022-11-18 18:50:36,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345059296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:36,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:36,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:50:36,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552530448] [2022-11-18 18:50:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:36,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:50:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:50:36,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:50:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:50:36,655 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 18:50:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:36,954 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2022-11-18 18:50:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:50:36,956 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 18:50:36,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:36,957 INFO L225 Difference]: With dead ends: 37 [2022-11-18 18:50:36,957 INFO L226 Difference]: Without dead ends: 27 [2022-11-18 18:50:36,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:50:36,959 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:36,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 13 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:50:36,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-18 18:50:36,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-11-18 18:50:36,966 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 18:50:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-18 18:50:36,972 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-18 18:50:36,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:36,972 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-18 18:50:36,973 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 18:50:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-18 18:50:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:50:36,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:36,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:36,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:37,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:50:37,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:37,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash 586911962, now seen corresponding path program 1 times [2022-11-18 18:50:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:50:37,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907021403] [2022-11-18 18:50:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:37,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:50:37,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:50:37,191 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:50:37,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f866989-ab99-410e-a4d6-dc23f1ba237d/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:50:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:37,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:50:37,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:37,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:50:37,540 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 25 treesize of output 13 [2022-11-18 18:50:37,841 INFO L321 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2022-11-18 18:50:37,842 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 1 case distinctions, treesize of input 25 treesize of output 28 [2022-11-18 18:50:38,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2022-11-18 18:50:38,990 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 18:50:38,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:50:41,395 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.base| (_ BitVec 32))) (= (select (store (select |c_#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (bvadd |ULTIMATE.start_main_~a~0#1.offset| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~0#1|)) (bvsrem (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) c_~N~0)) |ULTIMATE.start_main_~a~0#1.offset|) (_ bv0 32))) is different from false [2022-11-18 18:50:46,029 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 18:50:46,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:50:46,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907021403] [2022-11-18 18:50:46,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907021403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:50:46,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:50:46,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-18 18:50:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841185216] [2022-11-18 18:50:46,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:50:46,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:50:46,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:50:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:50:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=335, Unknown=1, NotChecked=38, Total=462 [2022-11-18 18:50:46,033 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 22 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 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)