./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array20_pattern.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_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:06:22,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:06:22,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:06:22,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:06:22,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:06:22,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:06:22,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:06:22,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:06:22,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:06:22,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:06:22,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:06:22,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:06:22,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:06:22,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:06:22,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:06:22,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:06:22,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:06:22,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:06:22,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:06:22,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:06:22,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:06:22,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:06:22,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:06:22,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:06:22,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:06:22,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:06:22,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:06:22,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:06:22,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:06:22,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:06:22,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:06:22,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:06:22,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:06:22,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:06:22,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:06:22,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:06:22,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:06:22,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:06:22,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:06:22,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:06:22,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:06:22,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:06:22,785 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:06:22,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:06:22,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:06:22,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:06:22,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:06:22,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:06:22,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:06:22,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:06:22,788 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:06:22,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:06:22,789 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:06:22,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:06:22,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:06:22,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:06:22,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:06:22,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:06:22,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:06:22,791 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:06:22,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:06:22,791 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:06:22,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:06:22,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:06:22,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:06:22,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:06:22,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:22,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:06:22,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:06:22,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:06:22,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:06:22,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:06:22,794 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:06:22,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:06:22,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:06:22,794 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2022-11-18 20:06:23,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:06:23,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:06:23,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:06:23,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:06:23,147 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:06:23,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2022-11-18 20:06:23,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/307fc96e6/5a674e66474b4422a44d62ff0cf857a7/FLAG00f6dbee7 [2022-11-18 20:06:23,790 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:06:23,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/sv-benchmarks/c/array-patterns/array20_pattern.c [2022-11-18 20:06:23,797 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/307fc96e6/5a674e66474b4422a44d62ff0cf857a7/FLAG00f6dbee7 [2022-11-18 20:06:24,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/307fc96e6/5a674e66474b4422a44d62ff0cf857a7 [2022-11-18 20:06:24,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:06:24,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:06:24,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:24,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:06:24,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:06:24,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d7d572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24, skipping insertion in model container [2022-11-18 20:06:24,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:06:24,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:06:24,402 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-11-18 20:06:24,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:24,433 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:06:24,453 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-11-18 20:06:24,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:24,480 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:06:24,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24 WrapperNode [2022-11-18 20:06:24,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:24,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:24,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:06:24,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:06:24,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,528 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-11-18 20:06:24,528 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:24,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:06:24,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:06:24,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:06:24,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:06:24,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:06:24,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:06:24,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:06:24,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (1/1) ... [2022-11-18 20:06:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:24,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:24,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:06:24,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:06:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:06:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:06:24,645 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:06:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:06:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:06:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:06:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:06:24,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:06:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:06:24,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:06:24,763 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:06:24,765 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:06:25,125 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:06:25,131 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:06:25,131 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:06:25,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:25 BoogieIcfgContainer [2022-11-18 20:06:25,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:06:25,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:06:25,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:06:25,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:06:25,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:06:24" (1/3) ... [2022-11-18 20:06:25,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc64120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:25, skipping insertion in model container [2022-11-18 20:06:25,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:24" (2/3) ... [2022-11-18 20:06:25,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc64120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:25, skipping insertion in model container [2022-11-18 20:06:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:25" (3/3) ... [2022-11-18 20:06:25,151 INFO L112 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2022-11-18 20:06:25,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:06:25,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:06:25,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:06:25,263 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;@6da79700, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:06:25,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:06:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:06:25,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:06:25,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:25,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:25,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-11-18 20:06:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:25,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846603426] [2022-11-18 20:06:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:25,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846603426] [2022-11-18 20:06:25,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 20:06:25,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140578499] [2022-11-18 20:06:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:25,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:25,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:25,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:06:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:25,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:06:25,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:25,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:25,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:25,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140578499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:25,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:25,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:06:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307145856] [2022-11-18 20:06:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:25,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:06:25,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:06:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:06:25,677 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:06:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:25,710 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-11-18 20:06:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:06:25,712 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 20:06:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:25,720 INFO L225 Difference]: With dead ends: 63 [2022-11-18 20:06:25,720 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 20:06:25,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:06:25,727 INFO L413 NwaCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:25,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:06:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 20:06:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 20:06:25,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:06:25,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-18 20:06:25,776 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-11-18 20:06:25,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:25,777 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-18 20:06:25,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:06:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-18 20:06:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:06:25,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:25,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:25,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:25,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:25,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-11-18 20:06:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:25,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811621162] [2022-11-18 20:06:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:26,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:26,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742450582] [2022-11-18 20:06:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:26,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:26,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:06:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:26,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:06:26,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:06:26,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:26,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811621162] [2022-11-18 20:06:26,227 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:26,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742450582] [2022-11-18 20:06:26,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742450582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:26,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:26,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860163242] [2022-11-18 20:06:26,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:26,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:26,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:26,231 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:06:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:26,258 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-18 20:06:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:26,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-18 20:06:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:26,260 INFO L225 Difference]: With dead ends: 36 [2022-11-18 20:06:26,260 INFO L226 Difference]: Without dead ends: 32 [2022-11-18 20:06:26,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:26,262 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:26,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:06:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-18 20:06:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-18 20:06:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:06:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-11-18 20:06:26,270 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-11-18 20:06:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:26,272 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-11-18 20:06:26,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:06:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-11-18 20:06:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:06:26,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:26,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:26,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-11-18 20:06:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:26,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987919028] [2022-11-18 20:06:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:26,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:26,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692147206] [2022-11-18 20:06:26,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:26,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:26,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:26,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:26,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:06:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:26,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:26,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:06:26,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:26,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:26,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987919028] [2022-11-18 20:06:26,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:26,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692147206] [2022-11-18 20:06:26,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692147206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:26,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:26,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:06:26,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871473545] [2022-11-18 20:06:26,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:26,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:06:26,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:26,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:06:26,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:26,720 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:06:26,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:26,832 INFO L93 Difference]: Finished difference Result 67 states and 86 transitions. [2022-11-18 20:06:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:06:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-18 20:06:26,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:26,833 INFO L225 Difference]: With dead ends: 67 [2022-11-18 20:06:26,833 INFO L226 Difference]: Without dead ends: 42 [2022-11-18 20:06:26,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:06:26,835 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:26,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:06:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-18 20:06:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2022-11-18 20:06:26,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:06:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-11-18 20:06:26,842 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 35 [2022-11-18 20:06:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:26,842 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-11-18 20:06:26,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:06:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-11-18 20:06:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 20:06:26,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:26,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:26,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:06:27,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:27,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-11-18 20:06:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:27,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756065340] [2022-11-18 20:06:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:27,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:27,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740949621] [2022-11-18 20:06:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:27,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:27,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:27,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:06:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:06:27,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:06:27,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:06:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:27,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756065340] [2022-11-18 20:06:27,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:06:27,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740949621] [2022-11-18 20:06:27,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740949621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:27,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:27,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:06:27,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393529391] [2022-11-18 20:06:27,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:27,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:27,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:27,192 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:06:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:27,266 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2022-11-18 20:06:27,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:06:27,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-18 20:06:27,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:27,270 INFO L225 Difference]: With dead ends: 64 [2022-11-18 20:06:27,273 INFO L226 Difference]: Without dead ends: 36 [2022-11-18 20:06:27,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:06:27,282 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:27,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 51 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:06:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-18 20:06:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2022-11-18 20:06:27,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:06:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-11-18 20:06:27,289 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 38 [2022-11-18 20:06:27,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:27,290 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-11-18 20:06:27,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:06:27,290 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-11-18 20:06:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:06:27,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:27,291 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:27,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:27,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-11-18 20:06:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:27,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669969773] [2022-11-18 20:06:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:27,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:06:27,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148873028] [2022-11-18 20:06:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:27,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:27,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:27,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:06:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:27,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 20:06:27,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:28,370 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 66 treesize of output 61 [2022-11-18 20:06:28,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 135 [2022-11-18 20:06:28,707 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-18 20:06:28,708 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 28 treesize of output 10 [2022-11-18 20:06:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:06:28,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:28,994 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 176 treesize of output 168 [2022-11-18 20:06:29,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:06:29,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 733 [2022-11-18 20:06:29,925 INFO L321 Elim1Store]: treesize reduction 354, result has 27.8 percent of original size [2022-11-18 20:06:29,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 963 treesize of output 1067 [2022-11-18 20:06:42,571 WARN L233 SmtUtils]: Spent 9.37s on a formula simplification. DAG size of input: 313 DAG size of output: 142 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:06:42,573 INFO L321 Elim1Store]: treesize reduction 3116, result has 25.7 percent of original size [2022-11-18 20:06:42,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 9 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 3304 treesize of output 12430 [2022-11-18 20:07:39,931 INFO L217 Elim1Store]: Index analysis took 2161 ms [2022-11-18 20:07:40,242 INFO L321 Elim1Store]: treesize reduction 856, result has 0.1 percent of original size [2022-11-18 20:07:40,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 24 case distinctions, treesize of input 2146 treesize of output 14297 [2022-11-18 20:07:42,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:42,446 INFO L217 Elim1Store]: Index analysis took 271 ms [2022-11-18 20:07:42,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 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 2146 treesize of output 14297 [2022-11-18 20:07:45,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:45,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:46,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:07:46,718 INFO L217 Elim1Store]: Index analysis took 1550 ms [2022-11-18 20:07:46,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2146 treesize of output 14297 [2022-11-18 20:07:52,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:07:53,863 INFO L217 Elim1Store]: Index analysis took 1025 ms [2022-11-18 20:07:54,058 INFO L321 Elim1Store]: treesize reduction 434, result has 0.2 percent of original size [2022-11-18 20:07:54,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 17 case distinctions, treesize of input 2146 treesize of output 14297 [2022-11-18 20:08:24,528 INFO L217 Elim1Store]: Index analysis took 205 ms [2022-11-18 20:08:24,599 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-11-18 20:08:24,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1000 treesize of output 953 [2022-11-18 20:08:25,997 INFO L217 Elim1Store]: Index analysis took 321 ms [2022-11-18 20:08:26,029 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-11-18 20:08:26,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1000 treesize of output 953 [2022-11-18 20:08:26,798 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-11-18 20:08:26,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 1180 treesize of output 1133 [2022-11-18 20:08:28,201 INFO L321 Elim1Store]: treesize reduction 226, result has 0.4 percent of original size [2022-11-18 20:08:28,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 2500 treesize of output 2453 [2022-11-18 20:08:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:28,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:28,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:28,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:28,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:28,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 694 treesize of output 647 [2022-11-18 20:08:28,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:28,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:28,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:29,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:29,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:29,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:29,058 INFO L321 Elim1Store]: treesize reduction 101, result has 5.6 percent of original size [2022-11-18 20:08:29,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 391 treesize of output 135 [2022-11-18 20:08:30,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:31,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:31,356 INFO L321 Elim1Store]: treesize reduction 372, result has 6.3 percent of original size [2022-11-18 20:08:31,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 486 treesize of output 249 [2022-11-18 20:08:31,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:08:32,466 INFO L321 Elim1Store]: treesize reduction 369, result has 7.1 percent of original size [2022-11-18 20:08:32,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 361 treesize of output 127 [2022-11-18 20:08:34,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:08:34,943 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 1817 treesize of output 1012 [2022-11-18 20:08:46,683 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 55 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:08:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:08:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:53,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669969773] [2022-11-18 20:08:53,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:53,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148873028] [2022-11-18 20:08:53,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148873028] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:53,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:53,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 37 [2022-11-18 20:08:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518424271] [2022-11-18 20:08:53,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:53,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:08:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:08:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:08:53,338 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:08:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:57,425 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2022-11-18 20:08:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 20:08:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-11-18 20:08:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:57,428 INFO L225 Difference]: With dead ends: 102 [2022-11-18 20:08:57,429 INFO L226 Difference]: Without dead ends: 77 [2022-11-18 20:08:57,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=626, Invalid=3280, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 20:08:57,432 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 151 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:57,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 291 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 564 Invalid, 0 Unknown, 198 Unchecked, 2.3s Time] [2022-11-18 20:08:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-18 20:08:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2022-11-18 20:08:57,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:08:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-11-18 20:08:57,446 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 40 [2022-11-18 20:08:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:57,446 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-11-18 20:08:57,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.8) internal successors, (63), 34 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:08:57,447 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-11-18 20:08:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:08:57,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:57,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:57,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:57,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:57,655 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:08:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-11-18 20:08:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:57,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244866409] [2022-11-18 20:08:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:57,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544904998] [2022-11-18 20:08:57,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:57,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:57,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:57,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:08:57,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:08:57,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:57,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:08:57,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:08:57,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:08:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244866409] [2022-11-18 20:08:57,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:08:57,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544904998] [2022-11-18 20:08:57,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544904998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:08:57,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:57,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 20:08:57,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728343820] [2022-11-18 20:08:57,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:08:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:57,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:08:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:08:57,942 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:08:58,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:58,145 INFO L93 Difference]: Finished difference Result 127 states and 152 transitions. [2022-11-18 20:08:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:08:58,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-18 20:08:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:58,146 INFO L225 Difference]: With dead ends: 127 [2022-11-18 20:08:58,146 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 20:08:58,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:08:58,147 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 135 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:58,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 121 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:08:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 20:08:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2022-11-18 20:08:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:08:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 83 transitions. [2022-11-18 20:08:58,162 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 83 transitions. Word has length 42 [2022-11-18 20:08:58,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:58,163 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 83 transitions. [2022-11-18 20:08:58,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:08:58,163 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 83 transitions. [2022-11-18 20:08:58,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:08:58,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:58,165 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:58,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:58,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:58,382 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:08:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2022-11-18 20:08:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:58,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458259408] [2022-11-18 20:08:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:58,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:08:58,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021339005] [2022-11-18 20:08:58,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:08:58,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:58,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:58,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:08:58,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:08:58,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:58,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 20:08:58,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:58,787 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 66 treesize of output 61 [2022-11-18 20:08:58,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 135 [2022-11-18 20:08:59,024 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:08:59,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2022-11-18 20:08:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:08:59,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:59,620 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 176 treesize of output 168 [2022-11-18 20:08:59,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:08:59,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 733 [2022-11-18 20:09:00,102 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:00,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:00,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:00,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:00,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:00,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:00,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:00,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:00,736 INFO L321 Elim1Store]: treesize reduction 390, result has 12.2 percent of original size [2022-11-18 20:09:00,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 413 treesize of output 700 [2022-11-18 20:09:02,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:02,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:02,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:02,565 INFO L321 Elim1Store]: treesize reduction 338, result has 24.7 percent of original size [2022-11-18 20:09:02,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 5 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 1008 treesize of output 2360 [2022-11-18 20:09:05,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:05,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:05,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:05,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:05,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:06,563 INFO L321 Elim1Store]: treesize reduction 279, result has 23.4 percent of original size [2022-11-18 20:09:06,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 1837 treesize of output 3001 [2022-11-18 20:09:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:07,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:07,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:07,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:07,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 1099 treesize of output 2137 [2022-11-18 20:09:08,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:08,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 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 1099 treesize of output 2137 [2022-11-18 20:09:08,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:08,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 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 743 treesize of output 717 [2022-11-18 20:09:08,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:08,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:09:08,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:08,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:09:09,327 INFO L321 Elim1Store]: treesize reduction 131, result has 30.7 percent of original size [2022-11-18 20:09:09,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 757 treesize of output 784 [2022-11-18 20:09:10,300 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-18 20:09:10,302 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 1665726 treesize of output 1664665 [2022-11-18 20:09:37,173 WARN L233 SmtUtils]: Spent 26.87s on a formula simplification. DAG size of input: 1403 DAG size of output: 1391 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:10:19,165 WARN L233 SmtUtils]: Spent 9.91s on a formula simplification. DAG size of input: 903 DAG size of output: 902 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-18 20:10:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:10:58,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458259408] [2022-11-18 20:10:58,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:10:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021339005] [2022-11-18 20:10:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021339005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:10:58,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:10:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2022-11-18 20:10:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620294120] [2022-11-18 20:10:58,037 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:10:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:10:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:10:58,040 INFO L87 Difference]: Start difference. First operand 70 states and 83 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:11:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:00,792 INFO L93 Difference]: Finished difference Result 126 states and 156 transitions. [2022-11-18 20:11:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:11:00,793 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2022-11-18 20:11:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:00,794 INFO L225 Difference]: With dead ends: 126 [2022-11-18 20:11:00,794 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 20:11:00,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=275, Invalid=1531, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:11:00,796 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 117 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:00,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 174 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 353 Invalid, 0 Unknown, 82 Unchecked, 0.8s Time] [2022-11-18 20:11:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 20:11:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2022-11-18 20:11:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:11:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 94 transitions. [2022-11-18 20:11:00,816 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 94 transitions. Word has length 42 [2022-11-18 20:11:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:00,816 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 94 transitions. [2022-11-18 20:11:00,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:11:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2022-11-18 20:11:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:11:00,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:00,818 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:00,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:01,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 20:11:01,031 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:01,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 1 times [2022-11-18 20:11:01,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:01,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3898645] [2022-11-18 20:11:01,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:01,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:01,043 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:11:01,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063491429] [2022-11-18 20:11:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:01,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:01,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:01,045 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:01,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:11:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:11:01,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:11:01,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:11:01,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:11:01,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:01,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3898645] [2022-11-18 20:11:01,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:11:01,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063491429] [2022-11-18 20:11:01,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063491429] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:01,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:01,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-18 20:11:01,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427239579] [2022-11-18 20:11:01,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:01,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:11:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:11:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:11:01,263 INFO L87 Difference]: Start difference. First operand 79 states and 94 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:11:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:01,495 INFO L93 Difference]: Finished difference Result 150 states and 184 transitions. [2022-11-18 20:11:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:11:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2022-11-18 20:11:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:01,497 INFO L225 Difference]: With dead ends: 150 [2022-11-18 20:11:01,497 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 20:11:01,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:11:01,498 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 54 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:01,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 111 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:11:01,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 20:11:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2022-11-18 20:11:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 84 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 20:11:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2022-11-18 20:11:01,521 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 42 [2022-11-18 20:11:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:01,522 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2022-11-18 20:11:01,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:11:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2022-11-18 20:11:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:11:01,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:01,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:01,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:01,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:01,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:01,732 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 4 times [2022-11-18 20:11:01,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:01,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891888220] [2022-11-18 20:11:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:01,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:01,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:11:01,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459756116] [2022-11-18 20:11:01,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:11:01,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:01,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:01,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:11:01,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:11:01,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:01,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:11:01,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:11:01,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:11:01,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891888220] [2022-11-18 20:11:01,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:11:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459756116] [2022-11-18 20:11:01,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459756116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:01,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:01,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 20:11:01,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477316266] [2022-11-18 20:11:01,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:11:01,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:11:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:11:01,950 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:11:02,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:02,156 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2022-11-18 20:11:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:11:02,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-18 20:11:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:02,158 INFO L225 Difference]: With dead ends: 112 [2022-11-18 20:11:02,158 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 20:11:02,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:11:02,159 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 87 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:02,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 92 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:11:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 20:11:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2022-11-18 20:11:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:11:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-11-18 20:11:02,174 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 45 [2022-11-18 20:11:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:02,174 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-11-18 20:11:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:11:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-11-18 20:11:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 20:11:02,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:02,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:02,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:11:02,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:02,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1727010197, now seen corresponding path program 2 times [2022-11-18 20:11:02,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:02,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117670422] [2022-11-18 20:11:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:02,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:02,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:11:02,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739510296] [2022-11-18 20:11:02,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:11:02,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:02,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:02,394 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:02,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:11:02,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:11:02,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:02,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:11:02,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:11:02,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:11:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:11:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:11:02,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117670422] [2022-11-18 20:11:02,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:11:02,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739510296] [2022-11-18 20:11:02,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739510296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:11:02,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:11:02,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-18 20:11:02,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779432794] [2022-11-18 20:11:02,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:11:02,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:11:02,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:11:02,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:11:02,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:11:02,652 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:11:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:11:02,808 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2022-11-18 20:11:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:11:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2022-11-18 20:11:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:11:02,810 INFO L225 Difference]: With dead ends: 78 [2022-11-18 20:11:02,810 INFO L226 Difference]: Without dead ends: 67 [2022-11-18 20:11:02,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:11:02,811 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 44 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:11:02,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 96 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:11:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-18 20:11:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2022-11-18 20:11:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:11:02,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2022-11-18 20:11:02,822 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 49 [2022-11-18 20:11:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:11:02,823 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2022-11-18 20:11:02,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:11:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2022-11-18 20:11:02,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:11:02,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:11:02,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:11:02,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:11:03,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:11:03,031 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:11:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:11:03,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 5 times [2022-11-18 20:11:03,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:11:03,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779190864] [2022-11-18 20:11:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:11:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:11:03,044 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:11:03,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018941620] [2022-11-18 20:11:03,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:11:03,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:11:03,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:11:03,050 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:11:03,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:11:03,590 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-18 20:11:03,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:11:03,593 WARN L261 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-18 20:11:03,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:11:03,674 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 20 treesize of output 16 [2022-11-18 20:11:03,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:03,763 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 34 treesize of output 33 [2022-11-18 20:11:04,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:04,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2022-11-18 20:11:04,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:04,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:11:04,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2022-11-18 20:11:05,113 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 178 treesize of output 161 [2022-11-18 20:11:05,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,222 INFO L217 Elim1Store]: Index analysis took 102 ms [2022-11-18 20:11:05,281 INFO L321 Elim1Store]: treesize reduction 102, result has 1.0 percent of original size [2022-11-18 20:11:05,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 26 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 687 [2022-11-18 20:11:05,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:05,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:05,951 INFO L217 Elim1Store]: Index analysis took 155 ms [2022-11-18 20:11:05,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:06,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:06,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:06,144 INFO L321 Elim1Store]: treesize reduction 186, result has 0.5 percent of original size [2022-11-18 20:11:06,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 6 select indices, 6 select index equivalence classes, 29 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 290 treesize of output 639 [2022-11-18 20:11:10,284 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 1067 treesize of output 1036 [2022-11-18 20:11:10,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:10,470 INFO L217 Elim1Store]: Index analysis took 146 ms [2022-11-18 20:11:15,860 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 171 DAG size of output: 27 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:11:15,861 INFO L321 Elim1Store]: treesize reduction 1220, result has 4.2 percent of original size [2022-11-18 20:11:15,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 6 stores, 6 select indices, 6 select index equivalence classes, 37 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 23 case distinctions, treesize of input 867 treesize of output 5045 [2022-11-18 20:11:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:31,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:32,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,167 INFO L217 Elim1Store]: Index analysis took 111 ms [2022-11-18 20:11:32,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 1482 treesize of output 3585 [2022-11-18 20:11:32,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,865 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:11:32,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:11:32,960 INFO L217 Elim1Store]: Index analysis took 122 ms [2022-11-18 20:11:33,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 9 select indices, 9 select index equivalence classes, 29 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 1500 treesize of output 3634 [2022-11-18 20:12:32,486 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 1047 treesize of output 1011 [2022-11-18 20:12:32,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:32,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:12:52,469 WARN L233 SmtUtils]: Spent 19.95s on a formula simplification. DAG size of input: 264 DAG size of output: 84 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:12:52,470 INFO L321 Elim1Store]: treesize reduction 1063, result has 20.8 percent of original size [2022-11-18 20:12:52,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 11 select indices, 11 select index equivalence classes, 4 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 51 case distinctions, treesize of input 91246 treesize of output 91331 [2022-11-18 20:12:56,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:12:56,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779190864] [2022-11-18 20:12:56,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:12:56,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018941620] [2022-11-18 20:12:56,316 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 20:12:56,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:12:56,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:12:56,525 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected |aux_mod_ULTIMATE.start_main_~index2~0#1_50| already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:202) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:594) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:582) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:509) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:421) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:310) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:200) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:129) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) 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) [2022-11-18 20:12:56,529 INFO L158 Benchmark]: Toolchain (without parser) took 392380.47ms. Allocated memory was 98.6MB in the beginning and 461.4MB in the end (delta: 362.8MB). Free memory was 65.5MB in the beginning and 397.4MB in the end (delta: -331.9MB). Peak memory consumption was 275.0MB. Max. memory is 16.1GB. [2022-11-18 20:12:56,530 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 78.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:12:56,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.17ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 73.7MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:12:56,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.81ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:12:56,530 INFO L158 Benchmark]: Boogie Preprocessor took 27.36ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:12:56,531 INFO L158 Benchmark]: RCFGBuilder took 583.11ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 57.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 20:12:56,531 INFO L158 Benchmark]: TraceAbstraction took 391387.15ms. Allocated memory was 98.6MB in the beginning and 461.4MB in the end (delta: 362.8MB). Free memory was 56.6MB in the beginning and 397.4MB in the end (delta: -340.8MB). Peak memory consumption was 267.4MB. Max. memory is 16.1GB. [2022-11-18 20:12:56,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 53.2MB in the beginning and 53.2MB in the end (delta: 78.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.17ms. Allocated memory is still 98.6MB. Free memory was 65.3MB in the beginning and 73.7MB in the end (delta: -8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.81ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.36ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 70.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 583.11ms. Allocated memory is still 98.6MB. Free memory was 70.2MB in the beginning and 57.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 391387.15ms. Allocated memory was 98.6MB in the beginning and 461.4MB in the end (delta: 362.8MB). Free memory was 56.6MB in the beginning and 397.4MB in the end (delta: -340.8MB). Peak memory consumption was 267.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected |aux_mod_ULTIMATE.start_main_~index2~0#1_50| already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected |aux_mod_ULTIMATE.start_main_~index2~0#1_50| already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:202) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-18 20:12:56,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array20_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:12:59,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:12:59,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:12:59,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:12:59,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:12:59,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:12:59,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:12:59,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:12:59,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:12:59,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:12:59,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:12:59,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:12:59,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:12:59,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:12:59,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:12:59,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:12:59,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:12:59,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:12:59,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:12:59,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:12:59,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:12:59,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:12:59,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:12:59,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:12:59,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:12:59,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:12:59,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:12:59,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:12:59,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:12:59,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:12:59,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:12:59,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:12:59,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:12:59,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:12:59,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:12:59,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:12:59,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:12:59,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:12:59,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:12:59,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:12:59,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:12:59,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-18 20:12:59,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:12:59,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:12:59,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:12:59,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:12:59,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:12:59,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:12:59,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:12:59,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:12:59,290 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:12:59,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:12:59,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:12:59,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:12:59,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:12:59,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:12:59,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:12:59,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:12:59,293 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:12:59,293 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:12:59,294 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:12:59,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:12:59,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:12:59,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:12:59,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:12:59,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:12:59,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:12:59,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:12:59,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:12:59,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:12:59,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:12:59,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:12:59,297 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:12:59,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:12:59,298 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:12:59,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:12:59,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:12:59,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:12:59,299 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4595fcce7ed27c87f4b36557925b67d85fd0fff83d482c199564b06ae0d3b884 [2022-11-18 20:12:59,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:12:59,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:12:59,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:12:59,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:12:59,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:12:59,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-patterns/array20_pattern.c [2022-11-18 20:12:59,854 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/3051dbdd5/7aeca52ab6554d278cc4cf51738b295c/FLAG416e26f77 [2022-11-18 20:13:00,476 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:13:00,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/sv-benchmarks/c/array-patterns/array20_pattern.c [2022-11-18 20:13:00,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/3051dbdd5/7aeca52ab6554d278cc4cf51738b295c/FLAG416e26f77 [2022-11-18 20:13:00,775 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/data/3051dbdd5/7aeca52ab6554d278cc4cf51738b295c [2022-11-18 20:13:00,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:13:00,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:13:00,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:13:00,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:13:00,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:13:00,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:13:00" (1/1) ... [2022-11-18 20:13:00,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b2e949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:00, skipping insertion in model container [2022-11-18 20:13:00,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:13:00" (1/1) ... [2022-11-18 20:13:00,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:13:00,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:13:00,982 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-11-18 20:13:01,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:13:01,020 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:13:01,081 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_25d7f0cd-4ff0-47b7-b605-047530b1228f/sv-benchmarks/c/array-patterns/array20_pattern.c[1444,1457] [2022-11-18 20:13:01,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:13:01,109 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:13:01,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01 WrapperNode [2022-11-18 20:13:01,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:13:01,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:13:01,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:13:01,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:13:01,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,149 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2022-11-18 20:13:01,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:13:01,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:13:01,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:13:01,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:13:01,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,183 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:13:01,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:13:01,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:13:01,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:13:01,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (1/1) ... [2022-11-18 20:13:01,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:13:01,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:01,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:13:01,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:13:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:13:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 20:13:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:13:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:13:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:13:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:13:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:13:01,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:13:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:13:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:13:01,369 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:13:01,372 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:13:02,084 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:13:02,091 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:13:02,092 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-18 20:13:02,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:13:02 BoogieIcfgContainer [2022-11-18 20:13:02,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:13:02,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:13:02,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:13:02,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:13:02,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:13:00" (1/3) ... [2022-11-18 20:13:02,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476e0dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:13:02, skipping insertion in model container [2022-11-18 20:13:02,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:13:01" (2/3) ... [2022-11-18 20:13:02,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476e0dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:13:02, skipping insertion in model container [2022-11-18 20:13:02,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:13:02" (3/3) ... [2022-11-18 20:13:02,105 INFO L112 eAbstractionObserver]: Analyzing ICFG array20_pattern.c [2022-11-18 20:13:02,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:13:02,139 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:13:02,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:13:02,271 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;@467ff951, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:13:02,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:13:02,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:13:02,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:13:02,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:02,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:02,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2132324569, now seen corresponding path program 1 times [2022-11-18 20:13:02,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:02,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231039353] [2022-11-18 20:13:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:02,317 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 20:13:02,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:02,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:02,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 20:13:02,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:13:02,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:02,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231039353] [2022-11-18 20:13:02,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231039353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:02,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:02,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:13:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521414825] [2022-11-18 20:13:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:02,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:13:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:13:02,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:02,559 INFO L87 Difference]: Start difference. First operand has 33 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 28 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:13:02,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:02,600 INFO L93 Difference]: Finished difference Result 63 states and 97 transitions. [2022-11-18 20:13:02,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:13:02,602 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-18 20:13:02,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:02,610 INFO L225 Difference]: With dead ends: 63 [2022-11-18 20:13:02,611 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 20:13:02,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:13:02,619 INFO L413 NwaCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:02,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:13:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 20:13:02,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 20:13:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:13:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-18 20:13:02,666 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-11-18 20:13:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:02,667 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-18 20:13:02,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:13:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-18 20:13:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 20:13:02,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:02,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:02,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:02,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:02,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1872922357, now seen corresponding path program 1 times [2022-11-18 20:13:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:02,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492990522] [2022-11-18 20:13:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:02,890 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 20:13:02,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:02,897 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:02,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:03,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:13:03,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:13:03,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:03,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492990522] [2022-11-18 20:13:03,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492990522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:03,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:03,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:13:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931635461] [2022-11-18 20:13:03,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:13:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:13:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:13:03,304 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:13:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:03,391 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-18 20:13:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:13:03,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2022-11-18 20:13:03,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:03,394 INFO L225 Difference]: With dead ends: 36 [2022-11-18 20:13:03,394 INFO L226 Difference]: Without dead ends: 32 [2022-11-18 20:13:03,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:13:03,396 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:13:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-18 20:13:03,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-18 20:13:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:13:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-11-18 20:13:03,408 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2022-11-18 20:13:03,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:03,411 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-11-18 20:13:03,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:13:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-11-18 20:13:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 20:13:03,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:03,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:03,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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)] Ended with exit code 0 [2022-11-18 20:13:03,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:03,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:03,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:03,618 INFO L85 PathProgramCache]: Analyzing trace with hash 212512359, now seen corresponding path program 1 times [2022-11-18 20:13:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:03,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477299929] [2022-11-18 20:13:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:03,620 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 20:13:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:03,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:03,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:03,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:13:03,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:13:04,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:04,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:04,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477299929] [2022-11-18 20:13:04,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477299929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:04,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:04,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:13:04,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775334246] [2022-11-18 20:13:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:04,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:13:04,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:13:04,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:13:04,069 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:13:04,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:04,090 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2022-11-18 20:13:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:13:04,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-18 20:13:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:04,092 INFO L225 Difference]: With dead ends: 61 [2022-11-18 20:13:04,092 INFO L226 Difference]: Without dead ends: 37 [2022-11-18 20:13:04,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:13:04,096 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:04,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 55 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-18 20:13:04,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-18 20:13:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-18 20:13:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:13:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-18 20:13:04,117 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 35 [2022-11-18 20:13:04,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:04,117 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-18 20:13:04,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:13:04,118 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-18 20:13:04,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 20:13:04,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:04,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:04,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:04,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:04,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:04,342 INFO L85 PathProgramCache]: Analyzing trace with hash -654332553, now seen corresponding path program 1 times [2022-11-18 20:13:04,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:04,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752992036] [2022-11-18 20:13:04,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:04,343 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 20:13:04,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:04,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:04,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (5)] Waiting until timeout for monitored process [2022-11-18 20:13:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:04,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:13:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:13:04,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:13:04,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:13:04,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752992036] [2022-11-18 20:13:04,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752992036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:04,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:04,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:13:04,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385290776] [2022-11-18 20:13:04,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:04,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:13:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:13:04,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:13:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:13:04,912 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:13:04,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:04,938 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2022-11-18 20:13:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:13:04,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-18 20:13:04,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:04,955 INFO L225 Difference]: With dead ends: 66 [2022-11-18 20:13:04,955 INFO L226 Difference]: Without dead ends: 38 [2022-11-18 20:13:04,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:13:04,957 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:04,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-18 20:13:04,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-18 20:13:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-18 20:13:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 20:13:04,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-11-18 20:13:04,967 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 38 [2022-11-18 20:13:04,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:04,968 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-11-18 20:13:04,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:13:04,968 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-11-18 20:13:04,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:13:04,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:04,970 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:05,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:05,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:05,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:05,171 INFO L85 PathProgramCache]: Analyzing trace with hash 579061941, now seen corresponding path program 1 times [2022-11-18 20:13:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:13:05,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [471899559] [2022-11-18 20:13:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:05,172 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 20:13:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:13:05,174 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:13:05,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (6)] Waiting until timeout for monitored process [2022-11-18 20:13:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:05,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:13:05,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:07,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2022-11-18 20:13:09,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:13:09,988 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:13:09,988 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 31 treesize of output 11 [2022-11-18 20:13:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:13:10,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:12,523 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 59 treesize of output 55 [2022-11-18 20:13:12,531 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 107 treesize of output 103 [2022-11-18 20:14:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:14:01,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:14:01,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [471899559] [2022-11-18 20:14:01,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [471899559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:14:01,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:01,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 39 [2022-11-18 20:14:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202038853] [2022-11-18 20:14:01,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:01,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:14:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:14:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:14:01,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1274, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:14:01,028 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:14:53,122 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 82 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:15:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:02,743 INFO L93 Difference]: Finished difference Result 138 states and 181 transitions. [2022-11-18 20:15:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 20:15:02,744 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-11-18 20:15:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:02,749 INFO L225 Difference]: With dead ends: 138 [2022-11-18 20:15:02,749 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 20:15:02,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 89.8s TimeCoverageRelationStatistics Valid=427, Invalid=2543, Unknown=0, NotChecked=0, Total=2970 [2022-11-18 20:15:02,752 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 174 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:02,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 371 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 355 Invalid, 0 Unknown, 373 Unchecked, 13.9s Time] [2022-11-18 20:15:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 20:15:02,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 72. [2022-11-18 20:15:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-18 20:15:02,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 94 transitions. [2022-11-18 20:15:02,789 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 94 transitions. Word has length 40 [2022-11-18 20:15:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:02,790 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 94 transitions. [2022-11-18 20:15:02,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 20:15:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 94 transitions. [2022-11-18 20:15:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:15:02,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:02,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:02,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:02,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1706965193, now seen corresponding path program 2 times [2022-11-18 20:15:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:02,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673013469] [2022-11-18 20:15:02,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:15:02,995 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 20:15:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:02,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:03,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (7)] Waiting until timeout for monitored process [2022-11-18 20:15:03,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:15:03,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:03,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:15:03,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:15:04,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:15:04,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:04,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673013469] [2022-11-18 20:15:04,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673013469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:04,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:04,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-11-18 20:15:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478749424] [2022-11-18 20:15:04,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:04,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:15:04,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:15:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:15:04,855 INFO L87 Difference]: Start difference. First operand 72 states and 94 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:15:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:05,143 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2022-11-18 20:15:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:15:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-11-18 20:15:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:05,145 INFO L225 Difference]: With dead ends: 115 [2022-11-18 20:15:05,146 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 20:15:05,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:15:05,147 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:05,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 158 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2022-11-18 20:15:05,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 20:15:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 97. [2022-11-18 20:15:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 83 states have (on average 1.3373493975903614) internal successors, (111), 83 states have internal predecessors, (111), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:15:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 129 transitions. [2022-11-18 20:15:05,181 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 129 transitions. Word has length 42 [2022-11-18 20:15:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:05,181 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 129 transitions. [2022-11-18 20:15:05,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:15:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 129 transitions. [2022-11-18 20:15:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:15:05,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:05,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:05,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:05,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:05,399 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:05,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:05,399 INFO L85 PathProgramCache]: Analyzing trace with hash 460196979, now seen corresponding path program 3 times [2022-11-18 20:15:05,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:05,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806198667] [2022-11-18 20:15:05,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:15:05,400 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 20:15:05,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:05,401 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:05,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (8)] Waiting until timeout for monitored process [2022-11-18 20:15:05,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:15:05,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:05,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 20:15:05,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:06,757 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 32 treesize of output 28 [2022-11-18 20:15:08,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:15:08,857 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 41 treesize of output 41 [2022-11-18 20:15:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:15:11,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:14,120 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 59 treesize of output 55 [2022-11-18 20:15:14,128 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 107 treesize of output 103 [2022-11-18 20:15:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:15:34,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806198667] [2022-11-18 20:15:34,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806198667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:34,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:34,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2022-11-18 20:15:34,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070841366] [2022-11-18 20:15:34,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:34,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:15:34,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:34,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:15:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:15:34,625 INFO L87 Difference]: Start difference. First operand 97 states and 129 transitions. Second operand has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:15:43,055 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 69 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:15:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:44,757 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2022-11-18 20:15:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:15:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 42 [2022-11-18 20:15:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:44,772 INFO L225 Difference]: With dead ends: 145 [2022-11-18 20:15:44,772 INFO L226 Difference]: Without dead ends: 141 [2022-11-18 20:15:44,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:15:44,773 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:44,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 190 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 87 Unchecked, 1.3s Time] [2022-11-18 20:15:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-18 20:15:44,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 95. [2022-11-18 20:15:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 81 states have internal predecessors, (107), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:15:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2022-11-18 20:15:44,823 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 42 [2022-11-18 20:15:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:44,824 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2022-11-18 20:15:44,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.0689655172413794) internal successors, (60), 27 states have internal predecessors, (60), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:15:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2022-11-18 20:15:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:15:44,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:44,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:44,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:45,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:45,043 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -126609035, now seen corresponding path program 1 times [2022-11-18 20:15:45,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235667904] [2022-11-18 20:15:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:45,044 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 20:15:45,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:45,045 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:45,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (9)] Waiting until timeout for monitored process [2022-11-18 20:15:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:45,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:15:45,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:45,220 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:15:45,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:45,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:45,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235667904] [2022-11-18 20:15:45,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235667904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:45,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:45,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583778796] [2022-11-18 20:15:45,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:45,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:45,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:45,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:45,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:45,223 INFO L87 Difference]: Start difference. First operand 95 states and 125 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:15:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:45,760 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2022-11-18 20:15:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-18 20:15:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:45,763 INFO L225 Difference]: With dead ends: 155 [2022-11-18 20:15:45,763 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 20:15:45,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:45,764 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:45,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:15:45,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 20:15:45,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 99. [2022-11-18 20:15:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:15:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2022-11-18 20:15:45,809 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 42 [2022-11-18 20:15:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:45,809 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2022-11-18 20:15:45,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:15:45,810 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2022-11-18 20:15:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:15:45,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:45,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:45,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (9)] Ended with exit code 0 [2022-11-18 20:15:46,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:46,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:46,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash -819666699, now seen corresponding path program 1 times [2022-11-18 20:15:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:46,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036102076] [2022-11-18 20:15:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:46,026 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 20:15:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:46,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:46,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (10)] Waiting until timeout for monitored process [2022-11-18 20:15:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:46,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:15:46,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:15:46,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:46,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:46,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036102076] [2022-11-18 20:15:46,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036102076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:46,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:46,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:15:46,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186554799] [2022-11-18 20:15:46,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:15:46,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:15:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:46,214 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:15:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:46,701 INFO L93 Difference]: Finished difference Result 163 states and 210 transitions. [2022-11-18 20:15:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:15:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-18 20:15:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:46,704 INFO L225 Difference]: With dead ends: 163 [2022-11-18 20:15:46,704 INFO L226 Difference]: Without dead ends: 122 [2022-11-18 20:15:46,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:15:46,705 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:46,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:15:46,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-18 20:15:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2022-11-18 20:15:46,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 83 states have (on average 1.2771084337349397) internal successors, (106), 83 states have internal predecessors, (106), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:15:46,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 124 transitions. [2022-11-18 20:15:46,746 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 124 transitions. Word has length 42 [2022-11-18 20:15:46,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:46,746 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 124 transitions. [2022-11-18 20:15:46,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:15:46,747 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 124 transitions. [2022-11-18 20:15:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:15:46,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:46,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:46,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:46,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:46,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1406472713, now seen corresponding path program 1 times [2022-11-18 20:15:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:46,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745865691] [2022-11-18 20:15:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:46,952 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 20:15:46,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:46,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:46,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (11)] Waiting until timeout for monitored process [2022-11-18 20:15:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:47,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:15:47,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:15:48,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:48,904 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:15:48,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745865691] [2022-11-18 20:15:48,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745865691] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:48,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:48,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-18 20:15:48,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621967317] [2022-11-18 20:15:48,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:48,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:15:48,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:48,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:15:48,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:15:48,907 INFO L87 Difference]: Start difference. First operand 97 states and 124 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:15:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:50,582 INFO L93 Difference]: Finished difference Result 160 states and 205 transitions. [2022-11-18 20:15:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:15:50,594 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-11-18 20:15:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:50,596 INFO L225 Difference]: With dead ends: 160 [2022-11-18 20:15:50,596 INFO L226 Difference]: Without dead ends: 111 [2022-11-18 20:15:50,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:15:50,597 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:50,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 140 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 87 Unchecked, 0.8s Time] [2022-11-18 20:15:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-18 20:15:50,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-11-18 20:15:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 93 states have internal predecessors, (120), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 20:15:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 138 transitions. [2022-11-18 20:15:50,653 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 138 transitions. Word has length 42 [2022-11-18 20:15:50,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:50,653 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 138 transitions. [2022-11-18 20:15:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:15:50,653 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 138 transitions. [2022-11-18 20:15:50,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:15:50,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:50,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:50,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:50,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:50,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1439159703, now seen corresponding path program 4 times [2022-11-18 20:15:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932703535] [2022-11-18 20:15:50,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:15:50,871 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 20:15:50,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:50,873 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:50,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (12)] Waiting until timeout for monitored process [2022-11-18 20:15:51,031 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:15:51,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:51,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:15:51,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:15:51,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:15:52,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932703535] [2022-11-18 20:15:52,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932703535] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:52,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:52,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-11-18 20:15:52,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230905231] [2022-11-18 20:15:52,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:52,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:15:52,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:52,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:15:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:15:52,458 INFO L87 Difference]: Start difference. First operand 107 states and 138 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:15:53,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:53,576 INFO L93 Difference]: Finished difference Result 188 states and 243 transitions. [2022-11-18 20:15:53,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:15:53,578 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 43 [2022-11-18 20:15:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:53,580 INFO L225 Difference]: With dead ends: 188 [2022-11-18 20:15:53,580 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 20:15:53,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:15:53,581 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 195 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:53,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 146 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 87 Invalid, 0 Unknown, 128 Unchecked, 0.7s Time] [2022-11-18 20:15:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 20:15:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2022-11-18 20:15:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 130 states have (on average 1.2769230769230768) internal successors, (166), 130 states have internal predecessors, (166), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 20:15:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2022-11-18 20:15:53,647 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 43 [2022-11-18 20:15:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:53,648 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2022-11-18 20:15:53,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:15:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2022-11-18 20:15:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:15:53,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:53,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:53,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:53,863 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash -449271315, now seen corresponding path program 2 times [2022-11-18 20:15:53,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:53,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48559380] [2022-11-18 20:15:53,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:15:53,864 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 20:15:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:53,865 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:53,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (13)] Waiting until timeout for monitored process [2022-11-18 20:15:54,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:15:54,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:54,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:15:54,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:15:54,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:15:54,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:54,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48559380] [2022-11-18 20:15:54,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48559380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:54,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:54,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:15:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110355611] [2022-11-18 20:15:54,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:54,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:15:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:54,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:15:54,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:15:54,335 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:15:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:54,377 INFO L93 Difference]: Finished difference Result 213 states and 276 transitions. [2022-11-18 20:15:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:15:54,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2022-11-18 20:15:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:54,379 INFO L225 Difference]: With dead ends: 213 [2022-11-18 20:15:54,379 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 20:15:54,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:15:54,380 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:54,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 77 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-11-18 20:15:54,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 20:15:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-18 20:15:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.25) internal successors, (145), 116 states have internal predecessors, (145), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:15:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 167 transitions. [2022-11-18 20:15:54,420 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 167 transitions. Word has length 43 [2022-11-18 20:15:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:54,421 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 167 transitions. [2022-11-18 20:15:54,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:15:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 167 transitions. [2022-11-18 20:15:54,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:15:54,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:54,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:54,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:54,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:54,630 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:54,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:54,630 INFO L85 PathProgramCache]: Analyzing trace with hash 822903975, now seen corresponding path program 5 times [2022-11-18 20:15:54,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:54,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959972461] [2022-11-18 20:15:54,630 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:15:54,630 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 20:15:54,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:54,631 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:54,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (14)] Waiting until timeout for monitored process [2022-11-18 20:15:54,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-11-18 20:15:54,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:54,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:15:54,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:15:55,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:15:56,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:56,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959972461] [2022-11-18 20:15:56,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959972461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:56,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:56,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2022-11-18 20:15:56,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531929669] [2022-11-18 20:15:56,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:56,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:15:56,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:56,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:15:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:15:56,431 INFO L87 Difference]: Start difference. First operand 132 states and 167 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:15:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:15:57,042 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2022-11-18 20:15:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:15:57,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 45 [2022-11-18 20:15:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:15:57,045 INFO L225 Difference]: With dead ends: 182 [2022-11-18 20:15:57,045 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 20:15:57,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:15:57,046 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:15:57,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 160 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 69 Unchecked, 0.2s Time] [2022-11-18 20:15:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 20:15:57,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2022-11-18 20:15:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.2394366197183098) internal successors, (176), 142 states have internal predecessors, (176), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 20:15:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 202 transitions. [2022-11-18 20:15:57,102 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 202 transitions. Word has length 45 [2022-11-18 20:15:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:15:57,103 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 202 transitions. [2022-11-18 20:15:57,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:15:57,103 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 202 transitions. [2022-11-18 20:15:57,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:15:57,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:15:57,104 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:57,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:15:57,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:57,311 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:15:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1412646757, now seen corresponding path program 6 times [2022-11-18 20:15:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:15:57,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344795829] [2022-11-18 20:15:57,312 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:15:57,312 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 20:15:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:15:57,313 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:15:57,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (15)] Waiting until timeout for monitored process [2022-11-18 20:15:57,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-18 20:15:57,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:15:57,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:15:57,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:15:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:15:58,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:15:59,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:15:59,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344795829] [2022-11-18 20:15:59,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344795829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:15:59,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:59,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-18 20:15:59,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734643784] [2022-11-18 20:15:59,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:59,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:15:59,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:15:59,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:15:59,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:15:59,123 INFO L87 Difference]: Start difference. First operand 161 states and 202 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:16:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:00,001 INFO L93 Difference]: Finished difference Result 269 states and 340 transitions. [2022-11-18 20:16:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:16:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 47 [2022-11-18 20:16:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:00,005 INFO L225 Difference]: With dead ends: 269 [2022-11-18 20:16:00,005 INFO L226 Difference]: Without dead ends: 239 [2022-11-18 20:16:00,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:16:00,006 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 44 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:00,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 229 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 80 Invalid, 0 Unknown, 142 Unchecked, 0.7s Time] [2022-11-18 20:16:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-18 20:16:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 228. [2022-11-18 20:16:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 199 states have (on average 1.256281407035176) internal successors, (250), 199 states have internal predecessors, (250), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-18 20:16:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 292 transitions. [2022-11-18 20:16:00,084 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 292 transitions. Word has length 47 [2022-11-18 20:16:00,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:00,084 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 292 transitions. [2022-11-18 20:16:00,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:16:00,084 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 292 transitions. [2022-11-18 20:16:00,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:16:00,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:00,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:00,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (15)] Ended with exit code 0 [2022-11-18 20:16:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:00,299 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2057551895, now seen corresponding path program 3 times [2022-11-18 20:16:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:00,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967715054] [2022-11-18 20:16:00,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:16:00,300 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 20:16:00,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:00,301 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:00,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (16)] Waiting until timeout for monitored process [2022-11-18 20:16:00,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:16:00,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:00,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:16:00,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:16:08,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:10,007 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:10,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967715054] [2022-11-18 20:16:10,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967715054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:16:10,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [748746111] [2022-11-18 20:16:10,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:16:10,008 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:16:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:16:10,011 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:16:10,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-18 20:16:10,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:16:10,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:10,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:16:10,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:27,282 WARN L233 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 27 DAG size of output: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:16:28,550 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:16:28,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:16:29,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [748746111] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:29,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:16:29,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 10] total 25 [2022-11-18 20:16:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783001964] [2022-11-18 20:16:29,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:29,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:16:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:16:29,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:16:29,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=512, Unknown=3, NotChecked=0, Total=650 [2022-11-18 20:16:29,791 INFO L87 Difference]: Start difference. First operand 228 states and 292 transitions. Second operand has 25 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 7 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:16:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:35,459 INFO L93 Difference]: Finished difference Result 348 states and 441 transitions. [2022-11-18 20:16:35,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:16:35,460 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 7 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 47 [2022-11-18 20:16:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:35,463 INFO L225 Difference]: With dead ends: 348 [2022-11-18 20:16:35,463 INFO L226 Difference]: Without dead ends: 344 [2022-11-18 20:16:35,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 125 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=197, Invalid=730, Unknown=3, NotChecked=0, Total=930 [2022-11-18 20:16:35,464 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:35,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 194 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 86 Invalid, 0 Unknown, 172 Unchecked, 0.7s Time] [2022-11-18 20:16:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-18 20:16:35,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 286. [2022-11-18 20:16:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 247 states have (on average 1.2469635627530364) internal successors, (308), 247 states have internal predecessors, (308), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-18 20:16:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 358 transitions. [2022-11-18 20:16:35,583 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 358 transitions. Word has length 47 [2022-11-18 20:16:35,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:35,584 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 358 transitions. [2022-11-18 20:16:35,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 7 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:16:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 358 transitions. [2022-11-18 20:16:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:16:35,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:35,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:35,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:35,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:16:35,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:35,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1854928565, now seen corresponding path program 4 times [2022-11-18 20:16:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:36,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302762435] [2022-11-18 20:16:36,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:16:36,000 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 20:16:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:36,001 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:36,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (18)] Waiting until timeout for monitored process [2022-11-18 20:16:36,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:16:36,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:36,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:16:36,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:16:36,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:37,387 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:16:37,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302762435] [2022-11-18 20:16:37,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302762435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:37,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:16:37,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2022-11-18 20:16:37,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17165035] [2022-11-18 20:16:37,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:16:37,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:16:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:16:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:16:37,390 INFO L87 Difference]: Start difference. First operand 286 states and 358 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:16:38,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:38,870 INFO L93 Difference]: Finished difference Result 519 states and 647 transitions. [2022-11-18 20:16:38,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:16:38,872 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2022-11-18 20:16:38,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:38,873 INFO L225 Difference]: With dead ends: 519 [2022-11-18 20:16:38,873 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 20:16:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:16:38,875 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:38,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 73 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 101 Unchecked, 1.2s Time] [2022-11-18 20:16:38,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 20:16:38,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 159. [2022-11-18 20:16:38,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 134 states have internal predecessors, (159), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 20:16:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 185 transitions. [2022-11-18 20:16:38,928 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 185 transitions. Word has length 50 [2022-11-18 20:16:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:38,928 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 185 transitions. [2022-11-18 20:16:38,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:16:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 185 transitions. [2022-11-18 20:16:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 20:16:38,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:38,930 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:38,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:39,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:39,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:39,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1911633259, now seen corresponding path program 7 times [2022-11-18 20:16:39,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:39,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780865343] [2022-11-18 20:16:39,144 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:16:39,144 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 20:16:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:39,145 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:39,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (19)] Waiting until timeout for monitored process [2022-11-18 20:16:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:16:39,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:16:39,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:16:40,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:16:42,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:42,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780865343] [2022-11-18 20:16:42,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780865343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:42,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:16:42,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 26 [2022-11-18 20:16:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012318590] [2022-11-18 20:16:42,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:16:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:16:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:16:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:16:42,527 INFO L87 Difference]: Start difference. First operand 159 states and 185 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:16:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:54,228 INFO L93 Difference]: Finished difference Result 281 states and 338 transitions. [2022-11-18 20:16:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:16:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2022-11-18 20:16:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:54,233 INFO L225 Difference]: With dead ends: 281 [2022-11-18 20:16:54,233 INFO L226 Difference]: Without dead ends: 211 [2022-11-18 20:16:54,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=740, Invalid=2340, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:16:54,235 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 44 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:54,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 206 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 258 Invalid, 0 Unknown, 227 Unchecked, 3.2s Time] [2022-11-18 20:16:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-18 20:16:54,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 182. [2022-11-18 20:16:54,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 157 states have (on average 1.2229299363057324) internal successors, (192), 157 states have internal predecessors, (192), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-18 20:16:54,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 218 transitions. [2022-11-18 20:16:54,290 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 218 transitions. Word has length 53 [2022-11-18 20:16:54,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:54,291 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 218 transitions. [2022-11-18 20:16:54,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:16:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 218 transitions. [2022-11-18 20:16:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:16:54,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:54,292 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:54,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:54,493 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1352567665, now seen corresponding path program 8 times [2022-11-18 20:16:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:54,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926993133] [2022-11-18 20:16:54,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:16:54,494 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 20:16:54,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:54,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:54,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (20)] Waiting until timeout for monitored process [2022-11-18 20:16:54,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:16:54,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:54,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:16:54,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:16:55,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:16:56,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:56,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926993133] [2022-11-18 20:16:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926993133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:56,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:16:56,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2022-11-18 20:16:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863561871] [2022-11-18 20:16:56,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:56,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:16:56,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:16:56,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:16:56,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:16:56,729 INFO L87 Difference]: Start difference. First operand 182 states and 218 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:16:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:16:57,276 INFO L93 Difference]: Finished difference Result 267 states and 322 transitions. [2022-11-18 20:16:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:16:57,278 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 54 [2022-11-18 20:16:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:16:57,279 INFO L225 Difference]: With dead ends: 267 [2022-11-18 20:16:57,279 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 20:16:57,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:16:57,280 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 39 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:16:57,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 152 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-18 20:16:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 20:16:57,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 249. [2022-11-18 20:16:57,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 218 states have (on average 1.224770642201835) internal successors, (267), 218 states have internal predecessors, (267), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-18 20:16:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 301 transitions. [2022-11-18 20:16:57,354 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 301 transitions. Word has length 54 [2022-11-18 20:16:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:16:57,355 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 301 transitions. [2022-11-18 20:16:57,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 20:16:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 301 transitions. [2022-11-18 20:16:57,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:16:57,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:16:57,357 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:16:57,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:16:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:57,572 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:16:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:16:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1459225491, now seen corresponding path program 5 times [2022-11-18 20:16:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:16:57,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454422211] [2022-11-18 20:16:57,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:16:57,573 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 20:16:57,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:16:57,575 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:16:57,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (21)] Waiting until timeout for monitored process [2022-11-18 20:16:57,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-18 20:16:57,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:16:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:16:57,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:16:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:16:58,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:16:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:16:59,702 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:16:59,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454422211] [2022-11-18 20:16:59,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454422211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:16:59,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:16:59,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-18 20:16:59,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466732279] [2022-11-18 20:16:59,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:16:59,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:16:59,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:16:59,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:16:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:16:59,704 INFO L87 Difference]: Start difference. First operand 249 states and 301 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 20:17:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:02,516 INFO L93 Difference]: Finished difference Result 708 states and 856 transitions. [2022-11-18 20:17:02,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:17:02,517 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2022-11-18 20:17:02,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:17:02,519 INFO L225 Difference]: With dead ends: 708 [2022-11-18 20:17:02,519 INFO L226 Difference]: Without dead ends: 502 [2022-11-18 20:17:02,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:17:02,521 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 337 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:17:02,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 219 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:17:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2022-11-18 20:17:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 308. [2022-11-18 20:17:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 265 states have (on average 1.2075471698113207) internal successors, (320), 265 states have internal predecessors, (320), 23 states have call successors, (23), 19 states have call predecessors, (23), 19 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-18 20:17:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 366 transitions. [2022-11-18 20:17:02,656 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 366 transitions. Word has length 54 [2022-11-18 20:17:02,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:17:02,656 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 366 transitions. [2022-11-18 20:17:02,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 20:17:02,657 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 366 transitions. [2022-11-18 20:17:02,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:17:02,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:17:02,658 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:17:02,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:17:02,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:17:02,874 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:17:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1673343477, now seen corresponding path program 9 times [2022-11-18 20:17:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:17:02,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324030441] [2022-11-18 20:17:02,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:17:02,875 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 20:17:02,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:17:02,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 20:17:02,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25d7f0cd-4ff0-47b7-b605-047530b1228f/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 (22)] Waiting until timeout for monitored process [2022-11-18 20:17:03,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-18 20:17:03,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:17:03,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 20:17:03,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:17:04,264 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 21 treesize of output 17 [2022-11-18 20:17:04,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2022-11-18 20:17:05,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:17:05,957 INFO L321 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-11-18 20:17:05,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2022-11-18 20:17:06,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:17:06,837 INFO L321 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2022-11-18 20:17:06,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 20:17:21,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:17:22,183 INFO L321 Elim1Store]: treesize reduction 159, result has 40.9 percent of original size [2022-11-18 20:17:22,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 65 treesize of output 141 [2022-11-18 20:17:35,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:19:22,135 WARN L233 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 104 DAG size of output: 90 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:19:22,137 INFO L321 Elim1Store]: treesize reduction 46, result has 91.9 percent of original size [2022-11-18 20:19:22,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 663