./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array27_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array27_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX --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 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:48:29,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:48:29,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:48:29,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:48:29,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:48:29,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:48:29,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:48:29,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:48:29,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:48:29,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:48:29,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:48:29,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:48:29,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:48:29,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:48:29,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:48:29,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:48:29,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:48:29,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:48:29,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:48:29,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:48:29,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:48:29,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:48:29,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:48:29,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:48:29,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:48:29,957 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:48:29,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:48:29,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:48:29,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:48:29,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:48:29,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:48:29,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:48:29,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:48:29,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:48:29,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:48:29,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:48:29,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:48:29,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:48:29,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:48:29,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:48:29,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:48:29,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:48:30,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:48:30,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:48:30,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:48:30,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:48:30,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:48:30,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:48:30,021 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:48:30,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:48:30,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:48:30,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:48:30,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:48:30,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:48:30,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:48:30,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:48:30,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:48:30,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:48:30,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:48:30,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:48:30,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:48:30,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:48:30,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:48:30,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:48:30,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:30,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:48:30,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:48:30,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:48:30,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:48:30,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:48:30,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:48:30,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:48:30,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:48:30,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:48:30,031 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_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 [2021-11-09 09:48:30,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:48:30,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:48:30,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:48:30,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:48:30,311 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:48:30,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-patterns/array27_pattern.c [2021-11-09 09:48:30,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/51b0dd5b0/5150b4d8918a480e9d58012302813846/FLAG98a8f42b7 [2021-11-09 09:48:30,867 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:48:30,867 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/sv-benchmarks/c/array-patterns/array27_pattern.c [2021-11-09 09:48:30,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/51b0dd5b0/5150b4d8918a480e9d58012302813846/FLAG98a8f42b7 [2021-11-09 09:48:31,275 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/51b0dd5b0/5150b4d8918a480e9d58012302813846 [2021-11-09 09:48:31,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:48:31,279 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:48:31,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:31,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:48:31,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:48:31,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2961c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31, skipping insertion in model container [2021-11-09 09:48:31,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:48:31,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:48:31,571 WARN L228 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_a0ada540-a3ec-4084-9651-19c815e15fea/sv-benchmarks/c/array-patterns/array27_pattern.c[1253,1266] [2021-11-09 09:48:31,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:31,606 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:48:31,619 WARN L228 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_a0ada540-a3ec-4084-9651-19c815e15fea/sv-benchmarks/c/array-patterns/array27_pattern.c[1253,1266] [2021-11-09 09:48:31,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:48:31,642 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:48:31,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31 WrapperNode [2021-11-09 09:48:31,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:48:31,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:48:31,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:48:31,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:48:31,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:48:31,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:48:31,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:48:31,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:48:31,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:48:31,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:48:31,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:48:31,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:48:31,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (1/1) ... [2021-11-09 09:48:31,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:48:31,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:31,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:48:31,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:48:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:48:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:48:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:48:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:48:31,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:48:31,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:48:31,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:48:32,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:48:32,040 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-09 09:48:32,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:32 BoogieIcfgContainer [2021-11-09 09:48:32,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:48:32,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:48:32,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:48:32,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:48:32,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:48:31" (1/3) ... [2021-11-09 09:48:32,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c605065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:32, skipping insertion in model container [2021-11-09 09:48:32,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:48:31" (2/3) ... [2021-11-09 09:48:32,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c605065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:48:32, skipping insertion in model container [2021-11-09 09:48:32,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:32" (3/3) ... [2021-11-09 09:48:32,066 INFO L111 eAbstractionObserver]: Analyzing ICFG array27_pattern.c [2021-11-09 09:48:32,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:48:32,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:48:32,141 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:48:32,156 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:48:32,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:48:32,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:48:32,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:32,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:32,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:32,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash -468356531, now seen corresponding path program 1 times [2021-11-09 09:48:32,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:32,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002043872] [2021-11-09 09:48:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:32,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:32,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:32,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002043872] [2021-11-09 09:48:32,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002043872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:32,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:32,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:48:32,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989963022] [2021-11-09 09:48:32,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:48:32,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:32,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:48:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:48:32,384 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:32,402 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2021-11-09 09:48:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:48:32,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:48:32,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:32,413 INFO L225 Difference]: With dead ends: 41 [2021-11-09 09:48:32,413 INFO L226 Difference]: Without dead ends: 18 [2021-11-09 09:48:32,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:48:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-09 09:48:32,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-09 09:48:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-09 09:48:32,452 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2021-11-09 09:48:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:32,453 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-09 09:48:32,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:32,454 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-09 09:48:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:48:32,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:32,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:32,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:48:32,456 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1936709868, now seen corresponding path program 1 times [2021-11-09 09:48:32,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:32,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385899563] [2021-11-09 09:48:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:32,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:32,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:32,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886217591] [2021-11-09 09:48:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:32,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:32,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:32,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:32,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:48:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:32,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:48:32,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:32,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:32,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385899563] [2021-11-09 09:48:32,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:32,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886217591] [2021-11-09 09:48:32,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886217591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:32,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:32,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:48:32,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95373025] [2021-11-09 09:48:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:48:32,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:32,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:48:32,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:48:32,853 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:33,000 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-09 09:48:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:48:33,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:48:33,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:33,005 INFO L225 Difference]: With dead ends: 36 [2021-11-09 09:48:33,005 INFO L226 Difference]: Without dead ends: 27 [2021-11-09 09:48:33,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:33,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-09 09:48:33,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-11-09 09:48:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-11-09 09:48:33,021 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2021-11-09 09:48:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:33,021 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-11-09 09:48:33,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-09 09:48:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:48:33,028 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:33,028 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:33,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:33,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-09 09:48:33,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash 129650620, now seen corresponding path program 1 times [2021-11-09 09:48:33,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:33,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671878305] [2021-11-09 09:48:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:33,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:33,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:33,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1069954324] [2021-11-09 09:48:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:33,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:33,291 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:33,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:48:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:33,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:48:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:48:33,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:33,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671878305] [2021-11-09 09:48:33,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:33,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069954324] [2021-11-09 09:48:33,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069954324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:33,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:33,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:48:33,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030449901] [2021-11-09 09:48:33,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:33,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:33,495 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:33,574 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-11-09 09:48:33,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-09 09:48:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:33,577 INFO L225 Difference]: With dead ends: 40 [2021-11-09 09:48:33,577 INFO L226 Difference]: Without dead ends: 25 [2021-11-09 09:48:33,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:48:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-09 09:48:33,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-11-09 09:48:33,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-09 09:48:33,588 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-11-09 09:48:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:33,589 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-09 09:48:33,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-09 09:48:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 09:48:33,593 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:33,593 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:33,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:33,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:33,807 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:33,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1705469543, now seen corresponding path program 1 times [2021-11-09 09:48:33,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:33,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928239171] [2021-11-09 09:48:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:33,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:33,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:33,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943345688] [2021-11-09 09:48:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:33,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:33,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:33,834 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:33,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:48:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:33,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 09:48:33,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:34,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:48:34,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:48:34,291 INFO L354 Elim1Store]: treesize reduction 54, result has 11.5 percent of original size [2021-11-09 09:48:34,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 53 treesize of output 29 [2021-11-09 09:48:34,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:34,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:34,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928239171] [2021-11-09 09:48:34,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:34,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943345688] [2021-11-09 09:48:34,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943345688] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:34,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:34,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-11-09 09:48:34,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532280479] [2021-11-09 09:48:34,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:48:34,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:34,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:48:34,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:48:34,499 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:34,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:34,824 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2021-11-09 09:48:34,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:48:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-09 09:48:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:34,827 INFO L225 Difference]: With dead ends: 73 [2021-11-09 09:48:34,827 INFO L226 Difference]: Without dead ends: 69 [2021-11-09 09:48:34,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:48:34,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-09 09:48:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 41. [2021-11-09 09:48:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.325) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-11-09 09:48:34,839 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 21 [2021-11-09 09:48:34,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:34,839 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-11-09 09:48:34,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-11-09 09:48:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 09:48:34,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:34,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:34,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:35,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:35,059 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:35,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1309634075, now seen corresponding path program 1 times [2021-11-09 09:48:35,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:35,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892484426] [2021-11-09 09:48:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:35,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:35,075 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:35,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781003459] [2021-11-09 09:48:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:35,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:35,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:35,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:48:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:35,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:48:35,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:48:35,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:35,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892484426] [2021-11-09 09:48:35,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:35,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781003459] [2021-11-09 09:48:35,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781003459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:35,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:35,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:48:35,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376886853] [2021-11-09 09:48:35,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:35,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:35,263 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:35,311 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2021-11-09 09:48:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-09 09:48:35,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:35,312 INFO L225 Difference]: With dead ends: 82 [2021-11-09 09:48:35,312 INFO L226 Difference]: Without dead ends: 47 [2021-11-09 09:48:35,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-09 09:48:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2021-11-09 09:48:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2021-11-09 09:48:35,321 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 21 [2021-11-09 09:48:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:35,321 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-11-09 09:48:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2021-11-09 09:48:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:48:35,323 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:35,323 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:35,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:35,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:35,550 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:35,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:35,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1881533531, now seen corresponding path program 2 times [2021-11-09 09:48:35,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:35,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854453033] [2021-11-09 09:48:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:35,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:35,559 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:35,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597052694] [2021-11-09 09:48:35,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:48:35,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:35,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:35,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:48:35,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:48:35,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:35,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:48:35,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:35,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:35,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854453033] [2021-11-09 09:48:35,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:35,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597052694] [2021-11-09 09:48:35,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597052694] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:35,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:35,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:48:35,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698901642] [2021-11-09 09:48:35,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:48:35,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:48:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:35,788 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:35,933 INFO L93 Difference]: Finished difference Result 128 states and 165 transitions. [2021-11-09 09:48:35,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:48:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-09 09:48:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:35,938 INFO L225 Difference]: With dead ends: 128 [2021-11-09 09:48:35,938 INFO L226 Difference]: Without dead ends: 99 [2021-11-09 09:48:35,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:48:35,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-09 09:48:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 73. [2021-11-09 09:48:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-11-09 09:48:35,965 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 23 [2021-11-09 09:48:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:35,966 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-11-09 09:48:35,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:35,969 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2021-11-09 09:48:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:48:35,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:35,971 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:36,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-09 09:48:36,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 09:48:36,198 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:36,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:36,198 INFO L85 PathProgramCache]: Analyzing trace with hash -242595923, now seen corresponding path program 3 times [2021-11-09 09:48:36,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:36,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941191512] [2021-11-09 09:48:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:36,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:36,210 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:36,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756078389] [2021-11-09 09:48:36,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:48:36,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:36,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:36,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:48:36,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-09 09:48:36,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:36,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:48:36,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:48:36,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:36,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941191512] [2021-11-09 09:48:36,448 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:36,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756078389] [2021-11-09 09:48:36,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756078389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:36,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:36,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:48:36,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581515946] [2021-11-09 09:48:36,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:48:36,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:36,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:48:36,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:36,451 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:36,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:36,561 INFO L93 Difference]: Finished difference Result 162 states and 203 transitions. [2021-11-09 09:48:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:48:36,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-09 09:48:36,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:36,564 INFO L225 Difference]: With dead ends: 162 [2021-11-09 09:48:36,564 INFO L226 Difference]: Without dead ends: 139 [2021-11-09 09:48:36,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:48:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-09 09:48:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2021-11-09 09:48:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2823529411764707) internal successors, (109), 85 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2021-11-09 09:48:36,609 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 26 [2021-11-09 09:48:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:36,610 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2021-11-09 09:48:36,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2021-11-09 09:48:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:48:36,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:36,612 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:36,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:36,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:36,834 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:36,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 943008096, now seen corresponding path program 4 times [2021-11-09 09:48:36,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:36,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178034392] [2021-11-09 09:48:36,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:36,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:36,853 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:36,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20872506] [2021-11-09 09:48:36,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:48:36,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:36,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:36,870 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:36,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:48:36,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:48:36,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:36,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:48:36,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:48:37,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:37,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178034392] [2021-11-09 09:48:37,096 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:37,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20872506] [2021-11-09 09:48:37,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20872506] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:37,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:37,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:48:37,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565211911] [2021-11-09 09:48:37,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:48:37,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:48:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:37,100 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:37,277 INFO L93 Difference]: Finished difference Result 142 states and 174 transitions. [2021-11-09 09:48:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:48:37,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-09 09:48:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:37,279 INFO L225 Difference]: With dead ends: 142 [2021-11-09 09:48:37,279 INFO L226 Difference]: Without dead ends: 129 [2021-11-09 09:48:37,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:48:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-09 09:48:37,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 76. [2021-11-09 09:48:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2021-11-09 09:48:37,304 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 26 [2021-11-09 09:48:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:37,305 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2021-11-09 09:48:37,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:37,305 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2021-11-09 09:48:37,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-09 09:48:37,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:37,308 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:37,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:37,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:37,534 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1635964770, now seen corresponding path program 1 times [2021-11-09 09:48:37,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:37,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718282058] [2021-11-09 09:48:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:37,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:37,544 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:37,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782317880] [2021-11-09 09:48:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:37,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:37,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:37,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:48:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:37,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:48:37,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:48:37,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:37,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718282058] [2021-11-09 09:48:37,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:37,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782317880] [2021-11-09 09:48:37,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782317880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:37,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:37,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:48:37,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473633024] [2021-11-09 09:48:37,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:48:37,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:48:37,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:37,774 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:37,901 INFO L93 Difference]: Finished difference Result 101 states and 122 transitions. [2021-11-09 09:48:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:48:37,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-09 09:48:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:37,904 INFO L225 Difference]: With dead ends: 101 [2021-11-09 09:48:37,904 INFO L226 Difference]: Without dead ends: 55 [2021-11-09 09:48:37,905 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:48:37,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-09 09:48:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2021-11-09 09:48:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-11-09 09:48:37,912 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2021-11-09 09:48:37,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:37,913 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-11-09 09:48:37,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-11-09 09:48:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 09:48:37,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:37,920 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:37,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:38,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-09 09:48:38,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1180776174, now seen corresponding path program 5 times [2021-11-09 09:48:38,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:38,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605545473] [2021-11-09 09:48:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:38,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:38,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:38,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731498991] [2021-11-09 09:48:38,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:48:38,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:38,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:38,158 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:38,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:48:38,258 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:48:38,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:38,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:48:38,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-09 09:48:38,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605545473] [2021-11-09 09:48:38,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731498991] [2021-11-09 09:48:38,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731498991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:38,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:38,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:48:38,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111977559] [2021-11-09 09:48:38,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:48:38,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:48:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:48:38,350 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:38,421 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2021-11-09 09:48:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:48:38,421 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-09 09:48:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:38,422 INFO L225 Difference]: With dead ends: 91 [2021-11-09 09:48:38,422 INFO L226 Difference]: Without dead ends: 58 [2021-11-09 09:48:38,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:48:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-09 09:48:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2021-11-09 09:48:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2021-11-09 09:48:38,430 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 40 [2021-11-09 09:48:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:38,431 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2021-11-09 09:48:38,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:38,431 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-11-09 09:48:38,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 09:48:38,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:38,433 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:38,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:38,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:38,646 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:38,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:38,646 INFO L85 PathProgramCache]: Analyzing trace with hash -479176300, now seen corresponding path program 2 times [2021-11-09 09:48:38,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:38,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679050740] [2021-11-09 09:48:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:38,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:38,658 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:38,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013613597] [2021-11-09 09:48:38,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:48:38,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:38,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:38,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:48:38,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:48:38,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:38,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:48:38,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-09 09:48:38,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:38,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679050740] [2021-11-09 09:48:38,918 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:38,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013613597] [2021-11-09 09:48:38,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013613597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:38,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:38,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:48:38,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610374529] [2021-11-09 09:48:38,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:48:38,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:48:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:48:38,922 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:38,986 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2021-11-09 09:48:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:48:38,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-09 09:48:38,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:38,988 INFO L225 Difference]: With dead ends: 84 [2021-11-09 09:48:38,988 INFO L226 Difference]: Without dead ends: 49 [2021-11-09 09:48:38,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:48:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-09 09:48:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-09 09:48:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 48 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2021-11-09 09:48:38,999 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 40 [2021-11-09 09:48:38,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:38,999 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2021-11-09 09:48:38,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2021-11-09 09:48:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-09 09:48:39,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:39,002 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:39,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:39,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 09:48:39,218 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash -338627690, now seen corresponding path program 3 times [2021-11-09 09:48:39,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:39,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037319422] [2021-11-09 09:48:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:39,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:39,235 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:39,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1827928579] [2021-11-09 09:48:39,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:48:39,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:39,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:39,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:39,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:48:39,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-09 09:48:39,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:39,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:48:39,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-09 09:48:39,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:39,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037319422] [2021-11-09 09:48:39,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:39,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827928579] [2021-11-09 09:48:39,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827928579] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:39,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:39,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:48:39,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328043053] [2021-11-09 09:48:39,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:48:39,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:39,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:48:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:48:39,595 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:39,685 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2021-11-09 09:48:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:48:39,686 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-09 09:48:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:39,687 INFO L225 Difference]: With dead ends: 60 [2021-11-09 09:48:39,687 INFO L226 Difference]: Without dead ends: 54 [2021-11-09 09:48:39,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:48:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-09 09:48:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2021-11-09 09:48:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-11-09 09:48:39,693 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 40 [2021-11-09 09:48:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:39,693 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-11-09 09:48:39,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:39,693 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-11-09 09:48:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 09:48:39,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:39,694 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:39,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:39,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-09 09:48:39,910 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1156561688, now seen corresponding path program 4 times [2021-11-09 09:48:39,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:39,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619733338] [2021-11-09 09:48:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:39,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:39,920 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:39,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762571332] [2021-11-09 09:48:39,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:48:39,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:39,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:39,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:48:40,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:48:40,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:40,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-09 09:48:40,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:40,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 18 [2021-11-09 09:48:40,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-09 09:48:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:40,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:40,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 101 [2021-11-09 09:48:40,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:40,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 24 [2021-11-09 09:48:40,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:40,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 27 [2021-11-09 09:48:41,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,048 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:48:41,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 90 [2021-11-09 09:48:41,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 23 [2021-11-09 09:48:41,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,283 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:48:41,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 129 [2021-11-09 09:48:41,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:41,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 35 [2021-11-09 09:48:42,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:48:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:42,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:48:42,618 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:48:42,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 42 [2021-11-09 09:48:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 2 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:48:42,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:42,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619733338] [2021-11-09 09:48:42,838 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:42,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762571332] [2021-11-09 09:48:42,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762571332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:42,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:42,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2021-11-09 09:48:42,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368332117] [2021-11-09 09:48:42,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-09 09:48:42,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-09 09:48:42,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:48:42,841 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:43,569 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2021-11-09 09:48:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:48:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-09 09:48:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:43,570 INFO L225 Difference]: With dead ends: 126 [2021-11-09 09:48:43,571 INFO L226 Difference]: Without dead ends: 84 [2021-11-09 09:48:43,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:48:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-09 09:48:43,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 75. [2021-11-09 09:48:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.1891891891891893) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2021-11-09 09:48:43,581 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 42 [2021-11-09 09:48:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:43,581 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2021-11-09 09:48:43,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 26 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2021-11-09 09:48:43,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 09:48:43,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:43,582 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:43,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:43,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 09:48:43,806 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:43,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1022548182, now seen corresponding path program 5 times [2021-11-09 09:48:43,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:43,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845789692] [2021-11-09 09:48:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:43,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:43,817 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:43,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791447036] [2021-11-09 09:48:43,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:48:43,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:43,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:43,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:48:46,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-09 09:48:46,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:46,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:48:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-09 09:48:46,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845789692] [2021-11-09 09:48:46,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:46,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791447036] [2021-11-09 09:48:46,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791447036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:46,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:48:46,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401415163] [2021-11-09 09:48:46,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:48:46,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:48:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:48:46,824 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:47,000 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2021-11-09 09:48:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:48:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-09 09:48:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:47,002 INFO L225 Difference]: With dead ends: 125 [2021-11-09 09:48:47,002 INFO L226 Difference]: Without dead ends: 92 [2021-11-09 09:48:47,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:48:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-09 09:48:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2021-11-09 09:48:47,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 89 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2021-11-09 09:48:47,013 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 42 [2021-11-09 09:48:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:47,014 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2021-11-09 09:48:47,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:47,014 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2021-11-09 09:48:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:48:47,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:47,015 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:47,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:47,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 09:48:47,215 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash -780490214, now seen corresponding path program 6 times [2021-11-09 09:48:47,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:47,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779563018] [2021-11-09 09:48:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:47,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:47,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:47,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007428724] [2021-11-09 09:48:47,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:48:47,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:47,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:47,235 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:47,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:48:47,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-09 09:48:47,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:47,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:48:47,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 09:48:47,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:47,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779563018] [2021-11-09 09:48:47,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:47,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007428724] [2021-11-09 09:48:47,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007428724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:47,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:47,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:48:47,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232999914] [2021-11-09 09:48:47,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:48:47,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:48:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:48:47,856 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:48,060 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2021-11-09 09:48:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:48:48,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-09 09:48:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:48,063 INFO L225 Difference]: With dead ends: 168 [2021-11-09 09:48:48,063 INFO L226 Difference]: Without dead ends: 153 [2021-11-09 09:48:48,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:48:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-09 09:48:48,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 113. [2021-11-09 09:48:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 112 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2021-11-09 09:48:48,080 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 44 [2021-11-09 09:48:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:48,081 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2021-11-09 09:48:48,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2021-11-09 09:48:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 09:48:48,082 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:48,082 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:48,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:48,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:48,290 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:48,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 188546737, now seen corresponding path program 7 times [2021-11-09 09:48:48,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:48,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676372075] [2021-11-09 09:48:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:48,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:48,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:48,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319514501] [2021-11-09 09:48:48,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:48:48,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:48,303 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:48,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:48:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:48:48,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:48:48,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-09 09:48:48,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:48,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676372075] [2021-11-09 09:48:48,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:48,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319514501] [2021-11-09 09:48:48,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319514501] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:48,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:48,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:48:48,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247192729] [2021-11-09 09:48:48,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:48:48,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:48:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:48:48,738 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:48,920 INFO L93 Difference]: Finished difference Result 241 states and 283 transitions. [2021-11-09 09:48:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:48:48,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-09 09:48:48,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:48,922 INFO L225 Difference]: With dead ends: 241 [2021-11-09 09:48:48,922 INFO L226 Difference]: Without dead ends: 146 [2021-11-09 09:48:48,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:48:48,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-09 09:48:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 112. [2021-11-09 09:48:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 111 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2021-11-09 09:48:48,937 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 45 [2021-11-09 09:48:48,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:48,937 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2021-11-09 09:48:48,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2021-11-09 09:48:48,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:48:48,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:48,939 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:48,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:49,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 09:48:49,154 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash -559192304, now seen corresponding path program 8 times [2021-11-09 09:48:49,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:49,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716588572] [2021-11-09 09:48:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:49,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:49,164 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:49,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [716188539] [2021-11-09 09:48:49,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:48:49,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:49,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:49,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:49,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 09:48:49,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:48:49,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:49,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:48:49,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 50 proven. 22 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-09 09:48:49,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:49,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716588572] [2021-11-09 09:48:49,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:49,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716188539] [2021-11-09 09:48:49,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716188539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:49,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:49,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:48:49,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272853170] [2021-11-09 09:48:49,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:48:49,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:48:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:48:49,685 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:49,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:49,887 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2021-11-09 09:48:49,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-09 09:48:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-09 09:48:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:49,889 INFO L225 Difference]: With dead ends: 129 [2021-11-09 09:48:49,889 INFO L226 Difference]: Without dead ends: 91 [2021-11-09 09:48:49,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:48:49,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-09 09:48:49,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 73. [2021-11-09 09:48:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 72 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2021-11-09 09:48:49,898 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 49 [2021-11-09 09:48:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:49,899 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2021-11-09 09:48:49,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:49,899 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2021-11-09 09:48:49,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:48:49,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:49,900 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:49,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:50,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 09:48:50,122 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:50,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 166476345, now seen corresponding path program 9 times [2021-11-09 09:48:50,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:50,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600831634] [2021-11-09 09:48:50,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:50,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:50,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:50,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88074555] [2021-11-09 09:48:50,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:48:50,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:50,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:50,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:50,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 09:48:50,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-09 09:48:50,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:50,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:48:50,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-09 09:48:50,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:50,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600831634] [2021-11-09 09:48:50,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:50,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88074555] [2021-11-09 09:48:50,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88074555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:48:50,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:48:50,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:48:50,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650470571] [2021-11-09 09:48:50,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:48:50,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:48:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:50,596 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:50,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:50,649 INFO L93 Difference]: Finished difference Result 151 states and 182 transitions. [2021-11-09 09:48:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:48:50,650 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-09 09:48:50,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:50,651 INFO L225 Difference]: With dead ends: 151 [2021-11-09 09:48:50,651 INFO L226 Difference]: Without dead ends: 85 [2021-11-09 09:48:50,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:48:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-09 09:48:50,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2021-11-09 09:48:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 78 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2021-11-09 09:48:50,666 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 64 [2021-11-09 09:48:50,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:50,666 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2021-11-09 09:48:50,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2021-11-09 09:48:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 09:48:50,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:50,668 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:50,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:50,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:48:50,882 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:50,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:50,882 INFO L85 PathProgramCache]: Analyzing trace with hash -342996745, now seen corresponding path program 10 times [2021-11-09 09:48:50,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:50,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490135271] [2021-11-09 09:48:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:50,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:50,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:50,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130978253] [2021-11-09 09:48:50,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:48:50,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:50,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:50,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:50,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 09:48:51,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:48:51,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:51,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:48:51,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-09 09:48:51,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:51,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490135271] [2021-11-09 09:48:51,463 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:51,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130978253] [2021-11-09 09:48:51,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130978253] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:51,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:51,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:48:51,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729708552] [2021-11-09 09:48:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:48:51,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:48:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:48:51,467 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:51,700 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2021-11-09 09:48:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-09 09:48:51,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-09 09:48:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:51,702 INFO L225 Difference]: With dead ends: 101 [2021-11-09 09:48:51,702 INFO L226 Difference]: Without dead ends: 97 [2021-11-09 09:48:51,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:48:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-09 09:48:51,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2021-11-09 09:48:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 87 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-11-09 09:48:51,711 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 64 [2021-11-09 09:48:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:51,712 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-11-09 09:48:51,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-11-09 09:48:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:48:51,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:51,713 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:51,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:51,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:51,918 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:51,918 INFO L85 PathProgramCache]: Analyzing trace with hash 358929683, now seen corresponding path program 11 times [2021-11-09 09:48:51,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:51,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76416914] [2021-11-09 09:48:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:51,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:51,927 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:51,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505201904] [2021-11-09 09:48:51,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:48:51,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:51,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:51,928 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:51,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 09:48:52,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-09 09:48:52,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:52,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:48:52,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:52,474 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 111 proven. 19 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-09 09:48:52,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:48:52,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76416914] [2021-11-09 09:48:52,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:48:52,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505201904] [2021-11-09 09:48:52,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505201904] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:48:52,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:48:52,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 09:48:52,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092617551] [2021-11-09 09:48:52,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:48:52,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:48:52,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:48:52,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:48:52,477 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:48:52,623 INFO L93 Difference]: Finished difference Result 164 states and 193 transitions. [2021-11-09 09:48:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:48:52,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-09 09:48:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:48:52,624 INFO L225 Difference]: With dead ends: 164 [2021-11-09 09:48:52,624 INFO L226 Difference]: Without dead ends: 110 [2021-11-09 09:48:52,625 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:48:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-09 09:48:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 102. [2021-11-09 09:48:52,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 101 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:52,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2021-11-09 09:48:52,634 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 73 [2021-11-09 09:48:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:48:52,634 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2021-11-09 09:48:52,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:48:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2021-11-09 09:48:52,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:48:52,635 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:48:52,635 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:48:52,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:48:52,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:52,838 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:48:52,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:48:52,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1672409137, now seen corresponding path program 12 times [2021-11-09 09:48:52,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:48:52,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016685610] [2021-11-09 09:48:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:48:52,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:48:52,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:48:52,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006418316] [2021-11-09 09:48:52,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:48:52,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:48:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:48:52,858 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:48:52,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 09:48:54,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-09 09:48:54,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:48:54,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-09 09:48:54,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:48:54,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-09 09:48:54,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 18 [2021-11-09 09:48:54,548 INFO L354 Elim1Store]: treesize reduction 138, result has 21.1 percent of original size [2021-11-09 09:48:54,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 93 [2021-11-09 09:48:54,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:54,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 7 [2021-11-09 09:48:54,829 INFO L354 Elim1Store]: treesize reduction 308, result has 18.3 percent of original size [2021-11-09 09:48:54,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 94 treesize of output 132 [2021-11-09 09:48:54,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:54,885 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-09 09:48:54,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 23 [2021-11-09 09:48:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:54,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:54,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:54,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 26 [2021-11-09 09:48:55,558 INFO L354 Elim1Store]: treesize reduction 312, result has 15.0 percent of original size [2021-11-09 09:48:55,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 95 treesize of output 129 [2021-11-09 09:48:55,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:55,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:55,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:55,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:55,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:55,646 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-09 09:48:55,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 17 [2021-11-09 09:48:56,005 INFO L354 Elim1Store]: treesize reduction 530, result has 14.9 percent of original size [2021-11-09 09:48:56,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 114 treesize of output 170 [2021-11-09 09:48:56,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,084 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-09 09:48:56,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 45 [2021-11-09 09:48:56,578 INFO L354 Elim1Store]: treesize reduction 570, result has 16.1 percent of original size [2021-11-09 09:48:56,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 112 treesize of output 179 [2021-11-09 09:48:56,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:56,683 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-09 09:48:56,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 14 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 46 [2021-11-09 09:48:57,585 INFO L354 Elim1Store]: treesize reduction 662, result has 35.3 percent of original size [2021-11-09 09:48:57,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 136 treesize of output 444 [2021-11-09 09:48:58,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:48:58,489 INFO L354 Elim1Store]: treesize reduction 20, result has 88.0 percent of original size [2021-11-09 09:48:58,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 211 treesize of output 290 [2021-11-09 09:49:00,341 INFO L354 Elim1Store]: treesize reduction 960, result has 29.4 percent of original size [2021-11-09 09:49:00,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 359 treesize of output 629 [2021-11-09 09:49:04,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:49:06,616 INFO L354 Elim1Store]: treesize reduction 399, result has 31.4 percent of original size [2021-11-09 09:49:06,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1077 treesize of output 975 [2021-11-09 09:49:20,375 INFO L354 Elim1Store]: treesize reduction 1514, result has 12.3 percent of original size [2021-11-09 09:49:20,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 823 treesize of output 677 [2021-11-09 09:49:21,439 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:49:21,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:49:21,916 INFO L354 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2021-11-09 09:49:21,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 31 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 5 case distinctions, treesize of input 354 treesize of output 185 [2021-11-09 09:49:50,601 WARN L207 SmtUtils]: Spent 7.03 s on a formula simplification. DAG size of input: 413 DAG size of output: 174 [2021-11-09 09:49:50,603 INFO L354 Elim1Store]: treesize reduction 1438, result has 32.2 percent of original size [2021-11-09 09:49:50,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 328 treesize of output 758 [2021-11-09 09:50:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 2 proven. 255 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:50:45,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:45,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016685610] [2021-11-09 09:50:45,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:50:45,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006418316] [2021-11-09 09:50:45,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006418316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:45,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:50:45,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2021-11-09 09:50:45,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511438058] [2021-11-09 09:50:45,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-09 09:50:45,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-09 09:50:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2458, Unknown=0, NotChecked=0, Total=2652 [2021-11-09 09:50:45,552 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 52 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:10,477 INFO L93 Difference]: Finished difference Result 221 states and 256 transitions. [2021-11-09 09:51:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-09 09:51:10,477 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-09 09:51:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:10,478 INFO L225 Difference]: With dead ends: 221 [2021-11-09 09:51:10,478 INFO L226 Difference]: Without dead ends: 139 [2021-11-09 09:51:10,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=285, Invalid=4005, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:51:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-09 09:51:10,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 125. [2021-11-09 09:51:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.1370967741935485) internal successors, (141), 124 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 141 transitions. [2021-11-09 09:51:10,502 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 141 transitions. Word has length 73 [2021-11-09 09:51:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:10,503 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 141 transitions. [2021-11-09 09:51:10,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 52 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2021-11-09 09:51:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-09 09:51:10,504 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:10,504 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:10,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:10,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:10,718 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1012877615, now seen corresponding path program 13 times [2021-11-09 09:51:10,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:10,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157101794] [2021-11-09 09:51:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:10,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:10,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:10,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1405489362] [2021-11-09 09:51:10,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:51:10,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:10,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:10,735 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:10,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 09:51:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:11,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:51:11,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 24 proven. 99 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-09 09:51:11,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:11,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157101794] [2021-11-09 09:51:11,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:11,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405489362] [2021-11-09 09:51:11,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405489362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:11,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:11,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 09:51:11,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228118931] [2021-11-09 09:51:11,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:51:11,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:11,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:51:11,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:11,674 INFO L87 Difference]: Start difference. First operand 125 states and 141 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:11,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:11,906 INFO L93 Difference]: Finished difference Result 203 states and 231 transitions. [2021-11-09 09:51:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:51:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-09 09:51:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:11,908 INFO L225 Difference]: With dead ends: 203 [2021-11-09 09:51:11,909 INFO L226 Difference]: Without dead ends: 151 [2021-11-09 09:51:11,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-09 09:51:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2021-11-09 09:51:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.121212121212121) internal successors, (148), 132 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2021-11-09 09:51:11,932 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 73 [2021-11-09 09:51:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:11,933 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2021-11-09 09:51:11,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2021-11-09 09:51:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-09 09:51:11,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:11,934 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:11,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:12,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:12,142 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:12,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash -707154671, now seen corresponding path program 14 times [2021-11-09 09:51:12,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:12,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267691942] [2021-11-09 09:51:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:12,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:12,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:12,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437353432] [2021-11-09 09:51:12,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:51:12,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:12,159 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:12,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-09 09:51:12,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:51:12,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:12,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:51:12,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 88 proven. 80 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-09 09:51:13,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:13,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267691942] [2021-11-09 09:51:13,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:13,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437353432] [2021-11-09 09:51:13,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437353432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:13,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:13,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:51:13,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895963502] [2021-11-09 09:51:13,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:51:13,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:51:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:51:13,163 INFO L87 Difference]: Start difference. First operand 133 states and 148 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:13,495 INFO L93 Difference]: Finished difference Result 303 states and 344 transitions. [2021-11-09 09:51:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:51:13,495 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-09 09:51:13,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:13,497 INFO L225 Difference]: With dead ends: 303 [2021-11-09 09:51:13,498 INFO L226 Difference]: Without dead ends: 238 [2021-11-09 09:51:13,498 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:51:13,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-09 09:51:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 187. [2021-11-09 09:51:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.118279569892473) internal successors, (208), 186 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:13,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 208 transitions. [2021-11-09 09:51:13,535 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 208 transitions. Word has length 75 [2021-11-09 09:51:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:13,535 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 208 transitions. [2021-11-09 09:51:13,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 208 transitions. [2021-11-09 09:51:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:51:13,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:13,537 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 9, 9, 8, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:13,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:13,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:13,762 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:13,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1666633657, now seen corresponding path program 15 times [2021-11-09 09:51:13,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:13,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674537756] [2021-11-09 09:51:13,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:13,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:13,784 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:13,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584518797] [2021-11-09 09:51:13,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:51:13,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:13,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:13,786 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:13,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-09 09:51:14,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-09 09:51:14,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:14,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 09:51:14,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 113 proven. 32 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-09 09:51:15,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:15,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674537756] [2021-11-09 09:51:15,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:15,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584518797] [2021-11-09 09:51:15,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584518797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:15,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:15,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-11-09 09:51:15,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302262523] [2021-11-09 09:51:15,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:51:15,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:15,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:51:15,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:51:15,282 INFO L87 Difference]: Start difference. First operand 187 states and 208 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:18,526 INFO L93 Difference]: Finished difference Result 354 states and 411 transitions. [2021-11-09 09:51:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-09 09:51:18,528 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-09 09:51:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:18,529 INFO L225 Difference]: With dead ends: 354 [2021-11-09 09:51:18,530 INFO L226 Difference]: Without dead ends: 282 [2021-11-09 09:51:18,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1515 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=810, Invalid=3746, Unknown=0, NotChecked=0, Total=4556 [2021-11-09 09:51:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-09 09:51:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 210. [2021-11-09 09:51:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.124401913875598) internal successors, (235), 209 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:18,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 235 transitions. [2021-11-09 09:51:18,566 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 235 transitions. Word has length 79 [2021-11-09 09:51:18,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:18,567 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 235 transitions. [2021-11-09 09:51:18,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:18,567 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 235 transitions. [2021-11-09 09:51:18,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-09 09:51:18,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:18,568 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:18,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:18,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:18,776 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:18,777 INFO L85 PathProgramCache]: Analyzing trace with hash 173556027, now seen corresponding path program 16 times [2021-11-09 09:51:18,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:18,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349060013] [2021-11-09 09:51:18,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:18,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:18,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:18,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904575640] [2021-11-09 09:51:18,789 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:51:18,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:18,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:18,802 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:18,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-09 09:51:19,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:51:19,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:51:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 169 proven. 80 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-09 09:51:20,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:20,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349060013] [2021-11-09 09:51:20,025 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:20,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904575640] [2021-11-09 09:51:20,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904575640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:20,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:20,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:51:20,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874935872] [2021-11-09 09:51:20,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:51:20,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:51:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:51:20,028 INFO L87 Difference]: Start difference. First operand 210 states and 235 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:20,538 INFO L93 Difference]: Finished difference Result 282 states and 307 transitions. [2021-11-09 09:51:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-09 09:51:20,539 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-09 09:51:20,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:20,540 INFO L225 Difference]: With dead ends: 282 [2021-11-09 09:51:20,540 INFO L226 Difference]: Without dead ends: 214 [2021-11-09 09:51:20,540 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=243, Invalid=513, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:51:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-09 09:51:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 194. [2021-11-09 09:51:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 193 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:20,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 217 transitions. [2021-11-09 09:51:20,575 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 217 transitions. Word has length 82 [2021-11-09 09:51:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:20,575 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 217 transitions. [2021-11-09 09:51:20,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 217 transitions. [2021-11-09 09:51:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:51:20,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:20,577 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 11, 9, 9, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:20,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:20,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-09 09:51:20,794 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:20,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:20,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1039360239, now seen corresponding path program 17 times [2021-11-09 09:51:20,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:20,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210883741] [2021-11-09 09:51:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:20,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:20,807 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:20,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029038391] [2021-11-09 09:51:20,808 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:51:20,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:20,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:20,809 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:20,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-09 09:51:21,778 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-09 09:51:21,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:21,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:51:21,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 260 proven. 97 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-09 09:51:22,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:22,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210883741] [2021-11-09 09:51:22,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:22,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029038391] [2021-11-09 09:51:22,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029038391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:22,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:22,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:51:22,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667193860] [2021-11-09 09:51:22,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:51:22,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:51:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:51:22,178 INFO L87 Difference]: Start difference. First operand 194 states and 217 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:22,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:22,485 INFO L93 Difference]: Finished difference Result 208 states and 231 transitions. [2021-11-09 09:51:22,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:51:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-09 09:51:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:22,491 INFO L225 Difference]: With dead ends: 208 [2021-11-09 09:51:22,491 INFO L226 Difference]: Without dead ends: 141 [2021-11-09 09:51:22,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:51:22,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-09 09:51:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 131. [2021-11-09 09:51:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.1307692307692307) internal successors, (147), 130 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:22,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 147 transitions. [2021-11-09 09:51:22,511 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 147 transitions. Word has length 94 [2021-11-09 09:51:22,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:22,512 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 147 transitions. [2021-11-09 09:51:22,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 147 transitions. [2021-11-09 09:51:22,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:51:22,516 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:22,516 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:22,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:22,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-09 09:51:22,728 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:22,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1454828076, now seen corresponding path program 18 times [2021-11-09 09:51:22,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:22,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660024436] [2021-11-09 09:51:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:22,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:22,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:22,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [62998881] [2021-11-09 09:51:22,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:51:22,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:22,768 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:22,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-09 09:51:23,670 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-11-09 09:51:23,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:23,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:51:23,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-11-09 09:51:23,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:23,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660024436] [2021-11-09 09:51:23,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:23,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62998881] [2021-11-09 09:51:23,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62998881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:23,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:23,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 09:51:23,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197745962] [2021-11-09 09:51:23,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:51:23,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:51:23,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:51:23,911 INFO L87 Difference]: Start difference. First operand 131 states and 147 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:24,091 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2021-11-09 09:51:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:51:24,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:51:24,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:24,094 INFO L225 Difference]: With dead ends: 172 [2021-11-09 09:51:24,094 INFO L226 Difference]: Without dead ends: 133 [2021-11-09 09:51:24,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:51:24,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-09 09:51:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 108. [2021-11-09 09:51:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.1121495327102804) internal successors, (119), 107 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2021-11-09 09:51:24,108 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 103 [2021-11-09 09:51:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:24,109 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2021-11-09 09:51:24,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2021-11-09 09:51:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-09 09:51:24,109 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:24,110 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 12, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:24,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:24,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-09 09:51:24,310 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1370837904, now seen corresponding path program 19 times [2021-11-09 09:51:24,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:24,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288477460] [2021-11-09 09:51:24,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:24,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:24,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:24,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509999920] [2021-11-09 09:51:24,322 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:51:24,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:24,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:24,326 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:24,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-09 09:51:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:25,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:51:25,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:25,802 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 16 proven. 274 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-11-09 09:51:25,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:25,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288477460] [2021-11-09 09:51:25,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:25,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509999920] [2021-11-09 09:51:25,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509999920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:25,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:25,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:51:25,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196390805] [2021-11-09 09:51:25,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:51:25,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:25,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:51:25,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:51:25,804 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:26,342 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2021-11-09 09:51:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:51:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-09 09:51:26,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:26,344 INFO L225 Difference]: With dead ends: 133 [2021-11-09 09:51:26,344 INFO L226 Difference]: Without dead ends: 129 [2021-11-09 09:51:26,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:51:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-09 09:51:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2021-11-09 09:51:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.1101694915254237) internal successors, (131), 118 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 131 transitions. [2021-11-09 09:51:26,363 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 131 transitions. Word has length 103 [2021-11-09 09:51:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:26,364 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 131 transitions. [2021-11-09 09:51:26,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 131 transitions. [2021-11-09 09:51:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 09:51:26,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:26,366 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:26,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:26,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 09:51:26,574 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:51:26,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:26,574 INFO L85 PathProgramCache]: Analyzing trace with hash -299123428, now seen corresponding path program 20 times [2021-11-09 09:51:26,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:26,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747665615] [2021-11-09 09:51:26,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:26,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:26,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:26,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660853756] [2021-11-09 09:51:26,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:51:26,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:26,588 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:26,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-09 09:51:31,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:51:31,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:31,708 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 146 conjunts are in the unsatisfiable core [2021-11-09 09:51:31,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:31,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-09 09:51:31,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 18 [2021-11-09 09:51:31,906 INFO L354 Elim1Store]: treesize reduction 158, result has 20.6 percent of original size [2021-11-09 09:51:31,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 101 [2021-11-09 09:51:31,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:31,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 24 [2021-11-09 09:51:31,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:31,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 27 [2021-11-09 09:51:32,220 INFO L354 Elim1Store]: treesize reduction 343, result has 18.7 percent of original size [2021-11-09 09:51:32,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 142 [2021-11-09 09:51:32,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 26 [2021-11-09 09:51:32,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 29 [2021-11-09 09:51:32,646 INFO L354 Elim1Store]: treesize reduction 528, result has 17.1 percent of original size [2021-11-09 09:51:32,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 114 treesize of output 175 [2021-11-09 09:51:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 41 [2021-11-09 09:51:32,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:32,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 47 [2021-11-09 09:51:33,294 INFO L354 Elim1Store]: treesize reduction 827, result has 16.1 percent of original size [2021-11-09 09:51:33,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 145 treesize of output 234 [2021-11-09 09:51:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 58 [2021-11-09 09:51:33,816 INFO L354 Elim1Store]: treesize reduction 1070, result has 15.0 percent of original size [2021-11-09 09:51:33,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 160 treesize of output 267 [2021-11-09 09:51:33,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:33,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 95 [2021-11-09 09:51:34,396 INFO L354 Elim1Store]: treesize reduction 1370, result has 14.1 percent of original size [2021-11-09 09:51:34,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 178 treesize of output 306 [2021-11-09 09:51:34,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:34,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 76 [2021-11-09 09:51:35,096 INFO L354 Elim1Store]: treesize reduction 1620, result has 13.7 percent of original size [2021-11-09 09:51:35,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 35 case distinctions, treesize of input 190 treesize of output 337 [2021-11-09 09:51:35,174 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:51:35,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:35,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 146 [2021-11-09 09:51:36,261 INFO L354 Elim1Store]: treesize reduction 2125, result has 12.6 percent of original size [2021-11-09 09:51:36,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 44 case distinctions, treesize of input 225 treesize of output 400 [2021-11-09 09:51:36,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:36,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 144 [2021-11-09 09:51:37,581 INFO L354 Elim1Store]: treesize reduction 2534, result has 12.0 percent of original size [2021-11-09 09:51:37,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 244 treesize of output 441 [2021-11-09 09:51:37,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:37,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 428 treesize of output 182 [2021-11-09 09:51:38,844 INFO L354 Elim1Store]: treesize reduction 2870, result has 11.4 percent of original size [2021-11-09 09:51:38,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 65 case distinctions, treesize of input 256 treesize of output 468 [2021-11-09 09:51:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:38,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 340 treesize of output 132 [2021-11-09 09:51:40,468 INFO L354 Elim1Store]: treesize reduction 3364, result has 10.7 percent of original size [2021-11-09 09:51:40,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 13 new quantified variables, introduced 77 case distinctions, treesize of input 276 treesize of output 509 [2021-11-09 09:51:40,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:40,806 INFO L244 Elim1Store]: Index analysis took 101 ms [2021-11-09 09:51:40,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 435 treesize of output 169 [2021-11-09 09:51:42,782 INFO L354 Elim1Store]: treesize reduction 3953, result has 10.4 percent of original size [2021-11-09 09:51:42,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 14 new quantified variables, introduced 90 case distinctions, treesize of input 307 treesize of output 570 [2021-11-09 09:51:42,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:42,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:43,011 INFO L244 Elim1Store]: Index analysis took 154 ms [2021-11-09 09:51:43,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 463 treesize of output 206 [2021-11-09 09:51:44,947 INFO L354 Elim1Store]: treesize reduction 4418, result has 10.0 percent of original size [2021-11-09 09:51:44,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 104 case distinctions, treesize of input 322 treesize of output 603 [2021-11-09 09:51:44,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:51:45,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:45,366 INFO L244 Elim1Store]: Index analysis took 106 ms [2021-11-09 09:51:45,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 233 [2021-11-09 09:51:47,335 INFO L354 Elim1Store]: treesize reduction 4983, result has 9.6 percent of original size [2021-11-09 09:51:47,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 16 new quantified variables, introduced 119 case distinctions, treesize of input 341 treesize of output 644 [2021-11-09 09:51:47,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:47,828 INFO L244 Elim1Store]: Index analysis took 128 ms [2021-11-09 09:51:47,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 492 treesize of output 186 [2021-11-09 09:51:50,085 INFO L354 Elim1Store]: treesize reduction 3340, result has 10.0 percent of original size [2021-11-09 09:51:50,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 17 new quantified variables, introduced 135 case distinctions, treesize of input 235 treesize of output 463 [2021-11-09 09:51:50,140 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:51:50,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:51:50,530 INFO L244 Elim1Store]: Index analysis took 145 ms [2021-11-09 09:51:50,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 391 treesize of output 171 [2021-11-09 09:52:12,868 INFO L354 Elim1Store]: treesize reduction 3450, result has 0.2 percent of original size [2021-11-09 09:52:12,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 464 treesize of output 94 [2021-11-09 09:52:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:52:14,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:14,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747665615] [2021-11-09 09:52:14,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:14,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660853756] [2021-11-09 09:52:14,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660853756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:14,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:14,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2021-11-09 09:52:14,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6389630] [2021-11-09 09:52:14,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-09 09:52:14,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-09 09:52:14,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=5161, Unknown=0, NotChecked=0, Total=5402 [2021-11-09 09:52:14,228 INFO L87 Difference]: Start difference. First operand 119 states and 131 transitions. Second operand has 74 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 74 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:41,461 INFO L93 Difference]: Finished difference Result 308 states and 343 transitions. [2021-11-09 09:52:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-09 09:52:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 74 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-09 09:52:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:41,463 INFO L225 Difference]: With dead ends: 308 [2021-11-09 09:52:41,463 INFO L226 Difference]: Without dead ends: 230 [2021-11-09 09:52:41,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2331 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=274, Invalid=6046, Unknown=0, NotChecked=0, Total=6320 [2021-11-09 09:52:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-09 09:52:41,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 215. [2021-11-09 09:52:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.102803738317757) internal successors, (236), 214 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 236 transitions. [2021-11-09 09:52:41,505 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 236 transitions. Word has length 114 [2021-11-09 09:52:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:41,506 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 236 transitions. [2021-11-09 09:52:41,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 74 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 236 transitions. [2021-11-09 09:52:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 09:52:41,508 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:41,508 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 13, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:41,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:41,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 09:52:41,713 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:52:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash 576895578, now seen corresponding path program 21 times [2021-11-09 09:52:41,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:41,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406032552] [2021-11-09 09:52:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:41,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:41,750 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:41,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561700911] [2021-11-09 09:52:41,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:52:41,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:41,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:41,752 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:41,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-09 09:52:43,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-09 09:52:43,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:43,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:52:43,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2021-11-09 09:52:43,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:43,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406032552] [2021-11-09 09:52:43,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:43,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561700911] [2021-11-09 09:52:43,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561700911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:43,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:43,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:52:43,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328783086] [2021-11-09 09:52:43,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:52:43,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:52:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:52:43,875 INFO L87 Difference]: Start difference. First operand 215 states and 236 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:44,168 INFO L93 Difference]: Finished difference Result 265 states and 290 transitions. [2021-11-09 09:52:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:52:44,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-09 09:52:44,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:44,171 INFO L225 Difference]: With dead ends: 265 [2021-11-09 09:52:44,171 INFO L226 Difference]: Without dead ends: 215 [2021-11-09 09:52:44,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:52:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-09 09:52:44,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2021-11-09 09:52:44,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.099056603773585) internal successors, (233), 212 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 233 transitions. [2021-11-09 09:52:44,212 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 233 transitions. Word has length 114 [2021-11-09 09:52:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:44,212 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 233 transitions. [2021-11-09 09:52:44,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 233 transitions. [2021-11-09 09:52:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-09 09:52:44,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:44,214 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:44,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:44,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:44,430 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:52:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash 465451806, now seen corresponding path program 22 times [2021-11-09 09:52:44,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:44,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520872531] [2021-11-09 09:52:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:44,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:44,454 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:44,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162601525] [2021-11-09 09:52:44,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:52:44,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:44,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:44,456 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:44,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-09 09:52:45,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:52:45,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:45,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:52:45,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 182 proven. 358 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-11-09 09:52:46,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:46,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520872531] [2021-11-09 09:52:46,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:46,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162601525] [2021-11-09 09:52:46,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162601525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:46,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:46,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 09:52:46,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564665328] [2021-11-09 09:52:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:52:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:52:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:52:46,427 INFO L87 Difference]: Start difference. First operand 213 states and 233 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:47,019 INFO L93 Difference]: Finished difference Result 384 states and 425 transitions. [2021-11-09 09:52:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:52:47,020 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-09 09:52:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:47,022 INFO L225 Difference]: With dead ends: 384 [2021-11-09 09:52:47,022 INFO L226 Difference]: Without dead ends: 343 [2021-11-09 09:52:47,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=420, Invalid=840, Unknown=0, NotChecked=0, Total=1260 [2021-11-09 09:52:47,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-09 09:52:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 251. [2021-11-09 09:52:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.096) internal successors, (274), 250 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 274 transitions. [2021-11-09 09:52:47,065 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 274 transitions. Word has length 116 [2021-11-09 09:52:47,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:47,066 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 274 transitions. [2021-11-09 09:52:47,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:47,066 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 274 transitions. [2021-11-09 09:52:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 09:52:47,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:47,068 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:47,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:47,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:47,282 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:52:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:47,282 INFO L85 PathProgramCache]: Analyzing trace with hash 612259565, now seen corresponding path program 23 times [2021-11-09 09:52:47,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:47,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471223934] [2021-11-09 09:52:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:47,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:47,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:47,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943970540] [2021-11-09 09:52:47,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:52:47,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:47,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:47,309 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:47,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-09 09:52:49,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-11-09 09:52:49,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:49,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:52:49,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 359 proven. 79 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2021-11-09 09:52:49,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:49,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471223934] [2021-11-09 09:52:49,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:49,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943970540] [2021-11-09 09:52:49,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943970540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:49,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:49,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 09:52:49,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651622771] [2021-11-09 09:52:49,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:52:49,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:52:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:52:49,418 INFO L87 Difference]: Start difference. First operand 251 states and 274 transitions. Second operand has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:49,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:49,877 INFO L93 Difference]: Finished difference Result 617 states and 688 transitions. [2021-11-09 09:52:49,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:52:49,878 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-09 09:52:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:49,880 INFO L225 Difference]: With dead ends: 617 [2021-11-09 09:52:49,880 INFO L226 Difference]: Without dead ends: 441 [2021-11-09 09:52:49,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:52:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-09 09:52:49,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 302. [2021-11-09 09:52:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.1096345514950166) internal successors, (334), 301 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 334 transitions. [2021-11-09 09:52:49,935 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 334 transitions. Word has length 117 [2021-11-09 09:52:49,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:49,935 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 334 transitions. [2021-11-09 09:52:49,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:49,936 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 334 transitions. [2021-11-09 09:52:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 09:52:49,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:49,937 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:49,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:50,146 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:52:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1124798389, now seen corresponding path program 24 times [2021-11-09 09:52:50,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:50,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148079249] [2021-11-09 09:52:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:50,181 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:50,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513604823] [2021-11-09 09:52:50,182 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-09 09:52:50,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:50,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:50,184 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:50,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-09 09:52:54,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-11-09 09:52:54,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:54,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:52:54,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 824 backedges. 299 proven. 92 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-11-09 09:52:55,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:55,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148079249] [2021-11-09 09:52:55,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:55,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513604823] [2021-11-09 09:52:55,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513604823] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:55,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:55,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 09:52:55,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710792580] [2021-11-09 09:52:55,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:52:55,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:52:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:52:55,256 INFO L87 Difference]: Start difference. First operand 302 states and 334 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:55,813 INFO L93 Difference]: Finished difference Result 409 states and 445 transitions. [2021-11-09 09:52:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:52:55,814 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-09 09:52:55,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:55,815 INFO L225 Difference]: With dead ends: 409 [2021-11-09 09:52:55,815 INFO L226 Difference]: Without dead ends: 314 [2021-11-09 09:52:55,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:52:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-09 09:52:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 290. [2021-11-09 09:52:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.0795847750865053) internal successors, (312), 289 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 312 transitions. [2021-11-09 09:52:55,888 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 312 transitions. Word has length 117 [2021-11-09 09:52:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:55,888 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 312 transitions. [2021-11-09 09:52:55,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 312 transitions. [2021-11-09 09:52:55,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 09:52:55,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:55,891 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 12, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:55,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:56,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-11-09 09:52:56,114 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:52:56,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash 502277136, now seen corresponding path program 25 times [2021-11-09 09:52:56,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:56,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938087697] [2021-11-09 09:52:56,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:56,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:56,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:56,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541777480] [2021-11-09 09:52:56,135 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 09:52:56,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:56,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:56,136 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:56,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-09 09:52:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:57,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:52:57,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 439 proven. 193 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2021-11-09 09:52:58,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:58,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938087697] [2021-11-09 09:52:58,262 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:58,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541777480] [2021-11-09 09:52:58,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541777480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:58,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:58,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 09:52:58,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130005230] [2021-11-09 09:52:58,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:52:58,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:58,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:52:58,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:52:58,265 INFO L87 Difference]: Start difference. First operand 290 states and 312 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:58,981 INFO L93 Difference]: Finished difference Result 363 states and 386 transitions. [2021-11-09 09:52:58,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 09:52:58,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-09 09:52:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:58,984 INFO L225 Difference]: With dead ends: 363 [2021-11-09 09:52:58,984 INFO L226 Difference]: Without dead ends: 298 [2021-11-09 09:52:58,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=462, Invalid=1020, Unknown=0, NotChecked=0, Total=1482 [2021-11-09 09:52:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-09 09:52:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 271. [2021-11-09 09:52:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.0777777777777777) internal successors, (291), 270 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 291 transitions. [2021-11-09 09:52:59,032 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 291 transitions. Word has length 125 [2021-11-09 09:52:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:59,033 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 291 transitions. [2021-11-09 09:52:59,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:52:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 291 transitions. [2021-11-09 09:52:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 09:52:59,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:59,035 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 16, 16, 16, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:59,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:59,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-09 09:52:59,258 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:52:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2031560220, now seen corresponding path program 26 times [2021-11-09 09:52:59,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:59,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724602598] [2021-11-09 09:52:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:59,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:59,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:59,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2003633068] [2021-11-09 09:52:59,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:52:59,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:59,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:59,275 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:59,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-09 09:53:00,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:53:00,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:53:00,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:53:00,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:01,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 424 proven. 193 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-11-09 09:53:01,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:01,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724602598] [2021-11-09 09:53:01,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:53:01,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003633068] [2021-11-09 09:53:01,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003633068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:53:01,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:53:01,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 09:53:01,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531722269] [2021-11-09 09:53:01,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:53:01,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:01,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:53:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:53:01,490 INFO L87 Difference]: Start difference. First operand 271 states and 291 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:02,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:02,166 INFO L93 Difference]: Finished difference Result 302 states and 323 transitions. [2021-11-09 09:53:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-09 09:53:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-09 09:53:02,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:02,168 INFO L225 Difference]: With dead ends: 302 [2021-11-09 09:53:02,168 INFO L226 Difference]: Without dead ends: 183 [2021-11-09 09:53:02,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=296, Invalid=574, Unknown=0, NotChecked=0, Total=870 [2021-11-09 09:53:02,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-09 09:53:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 163. [2021-11-09 09:53:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.1111111111111112) internal successors, (180), 162 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 180 transitions. [2021-11-09 09:53:02,199 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 180 transitions. Word has length 129 [2021-11-09 09:53:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:02,199 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 180 transitions. [2021-11-09 09:53:02,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:02,200 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 180 transitions. [2021-11-09 09:53:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-09 09:53:02,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:02,202 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 20, 20, 20, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:02,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:02,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-09 09:53:02,422 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:02,422 INFO L85 PathProgramCache]: Analyzing trace with hash -931391603, now seen corresponding path program 27 times [2021-11-09 09:53:02,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:02,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327991236] [2021-11-09 09:53:02,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:02,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:02,486 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:53:02,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234278819] [2021-11-09 09:53:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:53:02,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:53:02,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:53:02,488 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:53:02,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-09 09:53:08,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-09 09:53:08,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:53:08,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:53:08,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:09,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 443 proven. 31 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2021-11-09 09:53:09,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:09,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327991236] [2021-11-09 09:53:09,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:53:09,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234278819] [2021-11-09 09:53:09,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234278819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:53:09,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:53:09,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:53:09,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384923813] [2021-11-09 09:53:09,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:53:09,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:53:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:53:09,142 INFO L87 Difference]: Start difference. First operand 163 states and 180 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:10,431 INFO L93 Difference]: Finished difference Result 263 states and 292 transitions. [2021-11-09 09:53:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-09 09:53:10,433 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-09 09:53:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:10,434 INFO L225 Difference]: With dead ends: 263 [2021-11-09 09:53:10,434 INFO L226 Difference]: Without dead ends: 203 [2021-11-09 09:53:10,435 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:53:10,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-09 09:53:10,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 160. [2021-11-09 09:53:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.1132075471698113) internal successors, (177), 159 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 177 transitions. [2021-11-09 09:53:10,456 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 177 transitions. Word has length 152 [2021-11-09 09:53:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:10,456 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 177 transitions. [2021-11-09 09:53:10,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 177 transitions. [2021-11-09 09:53:10,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-09 09:53:10,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:10,457 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 20, 20, 20, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:10,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:10,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 09:53:10,658 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash 80144713, now seen corresponding path program 28 times [2021-11-09 09:53:10,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:10,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470479920] [2021-11-09 09:53:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:10,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:10,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:53:10,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278726674] [2021-11-09 09:53:10,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:53:10,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:53:10,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:53:10,677 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:53:10,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-09 09:53:12,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:53:12,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:53:12,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:53:12,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 27 proven. 675 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2021-11-09 09:53:13,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:13,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470479920] [2021-11-09 09:53:13,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:53:13,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278726674] [2021-11-09 09:53:13,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278726674] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:53:13,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:53:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-09 09:53:13,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236440768] [2021-11-09 09:53:13,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:53:13,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:53:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:53:13,003 INFO L87 Difference]: Start difference. First operand 160 states and 177 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:13,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:13,796 INFO L93 Difference]: Finished difference Result 190 states and 209 transitions. [2021-11-09 09:53:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-09 09:53:13,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-09 09:53:13,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:13,799 INFO L225 Difference]: With dead ends: 190 [2021-11-09 09:53:13,799 INFO L226 Difference]: Without dead ends: 186 [2021-11-09 09:53:13,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=588, Invalid=1218, Unknown=0, NotChecked=0, Total=1806 [2021-11-09 09:53:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-11-09 09:53:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 173. [2021-11-09 09:53:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.1104651162790697) internal successors, (191), 172 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:13,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 191 transitions. [2021-11-09 09:53:13,846 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 191 transitions. Word has length 152 [2021-11-09 09:53:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:13,847 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 191 transitions. [2021-11-09 09:53:13,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:13,847 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 191 transitions. [2021-11-09 09:53:13,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-09 09:53:13,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:13,849 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 20, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:13,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:14,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-09 09:53:14,063 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:14,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:14,064 INFO L85 PathProgramCache]: Analyzing trace with hash -68322811, now seen corresponding path program 29 times [2021-11-09 09:53:14,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:14,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216793395] [2021-11-09 09:53:14,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:14,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:14,082 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:53:14,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096696565] [2021-11-09 09:53:14,083 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:53:14,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:53:14,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:53:14,088 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:53:14,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-09 09:53:43,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2021-11-09 09:53:43,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:53:43,933 WARN L261 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 211 conjunts are in the unsatisfiable core [2021-11-09 09:53:43,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:43,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 18 [2021-11-09 09:53:43,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-09 09:53:44,088 INFO L354 Elim1Store]: treesize reduction 158, result has 20.6 percent of original size [2021-11-09 09:53:44,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 101 [2021-11-09 09:53:44,111 INFO L354 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2021-11-09 09:53:44,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 58 treesize of output 24 [2021-11-09 09:53:44,160 INFO L354 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2021-11-09 09:53:44,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 76 treesize of output 27 [2021-11-09 09:53:44,345 INFO L354 Elim1Store]: treesize reduction 343, result has 18.7 percent of original size [2021-11-09 09:53:44,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 142 [2021-11-09 09:53:44,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,362 INFO L354 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2021-11-09 09:53:44,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 27 [2021-11-09 09:53:44,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,422 INFO L354 Elim1Store]: treesize reduction 65, result has 1.5 percent of original size [2021-11-09 09:53:44,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 30 [2021-11-09 09:53:44,655 INFO L354 Elim1Store]: treesize reduction 560, result has 17.3 percent of original size [2021-11-09 09:53:44,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 118 treesize of output 183 [2021-11-09 09:53:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,681 INFO L354 Elim1Store]: treesize reduction 100, result has 1.0 percent of original size [2021-11-09 09:53:44,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 147 treesize of output 65 [2021-11-09 09:53:44,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:44,780 INFO L354 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2021-11-09 09:53:44,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 165 treesize of output 68 [2021-11-09 09:53:45,166 INFO L354 Elim1Store]: treesize reduction 809, result has 16.1 percent of original size [2021-11-09 09:53:45,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 137 treesize of output 224 [2021-11-09 09:53:45,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,201 INFO L354 Elim1Store]: treesize reduction 133, result has 0.7 percent of original size [2021-11-09 09:53:45,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 202 treesize of output 87 [2021-11-09 09:53:45,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:53:45,395 INFO L354 Elim1Store]: treesize reduction 131, result has 0.8 percent of original size [2021-11-09 09:53:45,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 199 treesize of output 87 [2021-11-09 09:53:45,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:45,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216793395] [2021-11-09 09:53:45,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:53:45,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096696565] [2021-11-09 09:53:45,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~column~0] [2021-11-09 09:53:45,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:45,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-09 09:53:45,818 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-09 09:53:45,818 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-09 09:53:45,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 09:53:45,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:46,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:53:46,049 INFO L731 BasicCegarLoop]: Path program histogram: [29, 5, 1, 1, 1, 1] [2021-11-09 09:53:46,051 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:53:46,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:53:46 BoogieIcfgContainer [2021-11-09 09:53:46,088 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:53:46,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:53:46,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:53:46,089 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:53:46,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:48:32" (3/4) ... [2021-11-09 09:53:46,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 09:53:46,093 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:53:46,094 INFO L168 Benchmark]: Toolchain (without parser) took 314814.57 ms. Allocated memory was 138.4 MB in the beginning and 427.8 MB in the end (delta: 289.4 MB). Free memory was 106.1 MB in the beginning and 102.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 293.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:53:46,094 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:53:46,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.15 ms. Allocated memory is still 138.4 MB. Free memory was 106.1 MB in the beginning and 114.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:53:46,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.71 ms. Allocated memory is still 138.4 MB. Free memory was 114.3 MB in the beginning and 112.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:53:46,095 INFO L168 Benchmark]: Boogie Preprocessor took 34.16 ms. Allocated memory is still 138.4 MB. Free memory was 112.7 MB in the beginning and 111.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:53:46,095 INFO L168 Benchmark]: RCFGBuilder took 329.21 ms. Allocated memory is still 138.4 MB. Free memory was 111.5 MB in the beginning and 100.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 09:53:46,096 INFO L168 Benchmark]: TraceAbstraction took 314042.05 ms. Allocated memory was 138.4 MB in the beginning and 427.8 MB in the end (delta: 289.4 MB). Free memory was 100.3 MB in the beginning and 102.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 290.0 MB. Max. memory is 16.1 GB. [2021-11-09 09:53:46,096 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 427.8 MB. Free memory is still 102.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:53:46,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 42.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.15 ms. Allocated memory is still 138.4 MB. Free memory was 106.1 MB in the beginning and 114.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.71 ms. Allocated memory is still 138.4 MB. Free memory was 114.3 MB in the beginning and 112.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.16 ms. Allocated memory is still 138.4 MB. Free memory was 112.7 MB in the beginning and 111.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 329.21 ms. Allocated memory is still 138.4 MB. Free memory was 111.5 MB in the beginning and 100.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 314042.05 ms. Allocated memory was 138.4 MB in the beginning and 427.8 MB in the end (delta: 289.4 MB). Free memory was 100.3 MB in the beginning and 102.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 290.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.31 ms. Allocated memory is still 427.8 MB. Free memory is still 102.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 32]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L36] signed long long ARR_SIZE ; [L41] ARR_SIZE = (signed long long)__VERIFIER_nondet_short() [L30] COND FALSE !(!cond) [L44] int array[ARR_SIZE][ARR_SIZE] ; [L46] int row = 0, column = 0 ; [L48] signed long long sum = 0 ; [L50] row=0 [L50] COND TRUE row main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX 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 -> 8e2a4cc1bd1815c470836bbbcc9d3775eac69b651b7231d974ae63a065851dd1 [2021-11-09 09:53:49,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:53:49,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:53:49,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:53:49,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:53:49,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:53:49,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-patterns/array27_pattern.c [2021-11-09 09:53:49,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/1a350d8aa/6644d21cdb2545ff992dc00d04f59279/FLAG28f56ac9b [2021-11-09 09:53:49,811 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:53:49,812 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/sv-benchmarks/c/array-patterns/array27_pattern.c [2021-11-09 09:53:49,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/1a350d8aa/6644d21cdb2545ff992dc00d04f59279/FLAG28f56ac9b [2021-11-09 09:53:50,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/data/1a350d8aa/6644d21cdb2545ff992dc00d04f59279 [2021-11-09 09:53:50,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:53:50,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:53:50,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:53:50,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:53:50,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:53:50,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0733fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50, skipping insertion in model container [2021-11-09 09:53:50,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:53:50,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:53:50,394 WARN L228 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_a0ada540-a3ec-4084-9651-19c815e15fea/sv-benchmarks/c/array-patterns/array27_pattern.c[1253,1266] [2021-11-09 09:53:50,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:53:50,432 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:53:50,452 WARN L228 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_a0ada540-a3ec-4084-9651-19c815e15fea/sv-benchmarks/c/array-patterns/array27_pattern.c[1253,1266] [2021-11-09 09:53:50,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:53:50,512 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:53:50,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50 WrapperNode [2021-11-09 09:53:50,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:53:50,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:53:50,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:53:50,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:53:50,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:53:50,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:53:50,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:53:50,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:53:50,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:53:50,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:53:50,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:53:50,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:53:50,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (1/1) ... [2021-11-09 09:53:50,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:53:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:53:50,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:53:50,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:53:50,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 09:53:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:53:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 09:53:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:53:50,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:53:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:53:50,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 09:53:51,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:53:51,620 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-09 09:53:51,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:53:51 BoogieIcfgContainer [2021-11-09 09:53:51,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:53:51,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:53:51,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:53:51,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:53:51,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:53:50" (1/3) ... [2021-11-09 09:53:51,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9d43e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:53:51, skipping insertion in model container [2021-11-09 09:53:51,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:53:50" (2/3) ... [2021-11-09 09:53:51,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9d43e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:53:51, skipping insertion in model container [2021-11-09 09:53:51,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:53:51" (3/3) ... [2021-11-09 09:53:51,644 INFO L111 eAbstractionObserver]: Analyzing ICFG array27_pattern.c [2021-11-09 09:53:51,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:53:51,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:53:51,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:53:51,737 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:53:51,737 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:53:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:53:51,767 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:51,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:51,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:51,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash -468356531, now seen corresponding path program 1 times [2021-11-09 09:53:51,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:53:51,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857014083] [2021-11-09 09:53:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:51,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:53:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:53:51,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:53:51,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 09:53:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:51,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 09:53:51,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:52,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:53:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:52,100 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:53:52,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857014083] [2021-11-09 09:53:52,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857014083] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:52,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:52,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 09:53:52,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996508417] [2021-11-09 09:53:52,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:53:52,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:53:52,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:53:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:53:52,138 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:52,158 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2021-11-09 09:53:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:53:52,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:53:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:52,168 INFO L225 Difference]: With dead ends: 41 [2021-11-09 09:53:52,168 INFO L226 Difference]: Without dead ends: 18 [2021-11-09 09:53:52,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:53:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-09 09:53:52,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-09 09:53:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2021-11-09 09:53:52,209 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2021-11-09 09:53:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:52,209 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-11-09 09:53:52,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2021-11-09 09:53:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:53:52,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:52,211 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:52,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:52,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:53:52,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:52,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1936709868, now seen corresponding path program 1 times [2021-11-09 09:53:52,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:53:52,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477670969] [2021-11-09 09:53:52,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:52,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:53:52,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:53:52,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:53:52,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 09:53:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:52,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:53:52,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:53,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:53:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:53,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:53:53,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477670969] [2021-11-09 09:53:53,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477670969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:53,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:53,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-09 09:53:53,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856627116] [2021-11-09 09:53:53,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:53:53,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:53:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:53:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:53:53,268 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:53,994 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-09 09:53:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:53:53,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:53:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:53,997 INFO L225 Difference]: With dead ends: 36 [2021-11-09 09:53:53,997 INFO L226 Difference]: Without dead ends: 27 [2021-11-09 09:53:53,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:53:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-09 09:53:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2021-11-09 09:53:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:54,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-11-09 09:53:54,006 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2021-11-09 09:53:54,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:54,006 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-11-09 09:53:54,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-11-09 09:53:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:53:54,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:54,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:54,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:54,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:53:54,222 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 129650620, now seen corresponding path program 1 times [2021-11-09 09:53:54,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:53:54,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794551982] [2021-11-09 09:53:54,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:54,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:53:54,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:53:54,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:53:54,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 09:53:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:54,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:53:54,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:53:54,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:53:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:53:54,999 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:53:54,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794551982] [2021-11-09 09:53:55,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794551982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:55,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:55,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-09 09:53:55,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862268475] [2021-11-09 09:53:55,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:53:55,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:53:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:53:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:53:55,003 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:55,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:55,604 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-11-09 09:53:55,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:53:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-09 09:53:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:55,618 INFO L225 Difference]: With dead ends: 40 [2021-11-09 09:53:55,619 INFO L226 Difference]: Without dead ends: 25 [2021-11-09 09:53:55,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:53:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-09 09:53:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-11-09 09:53:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-09 09:53:55,627 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2021-11-09 09:53:55,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:55,628 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-09 09:53:55,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:53:55,629 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-09 09:53:55,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 09:53:55,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:55,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:55,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-09 09:53:55,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:53:55,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:55,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1705469543, now seen corresponding path program 1 times [2021-11-09 09:53:55,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:53:55,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151963026] [2021-11-09 09:53:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:55,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:53:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:53:55,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:53:55,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 09:53:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:56,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-09 09:53:56,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:56,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:53:57,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-09 09:53:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:53:57,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:54:25,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 35 [2021-11-09 09:54:25,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 70 [2021-11-09 09:55:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:55:00,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:55:00,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151963026] [2021-11-09 09:55:00,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151963026] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:55:00,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:55:00,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-09 09:55:00,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863051593] [2021-11-09 09:55:00,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-09 09:55:00,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:55:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-09 09:55:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:55:00,521 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:55:47,564 WARN L207 SmtUtils]: Spent 7.31 s on a formula simplification. DAG size of input: 47 DAG size of output: 33 [2021-11-09 09:56:00,573 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-11-09 09:56:14,740 WARN L207 SmtUtils]: Spent 10.10 s on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-11-09 09:56:22,730 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-11-09 09:56:33,141 WARN L207 SmtUtils]: Spent 8.82 s on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-11-09 09:56:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:56:47,029 INFO L93 Difference]: Finished difference Result 93 states and 120 transitions. [2021-11-09 09:56:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-09 09:56:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-09 09:56:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:56:47,033 INFO L225 Difference]: With dead ends: 93 [2021-11-09 09:56:47,033 INFO L226 Difference]: Without dead ends: 72 [2021-11-09 09:56:47,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 134.0s TimeCoverageRelationStatistics Valid=482, Invalid=1588, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:56:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-09 09:56:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2021-11-09 09:56:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 56 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:56:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2021-11-09 09:56:47,054 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 21 [2021-11-09 09:56:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:56:47,055 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2021-11-09 09:56:47,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:56:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2021-11-09 09:56:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:56:47,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:56:47,057 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:56:47,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:56:47,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:56:47,258 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:56:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:56:47,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1482958944, now seen corresponding path program 1 times [2021-11-09 09:56:47,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:56:47,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179649383] [2021-11-09 09:56:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:56:47,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:56:47,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:56:47,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:56:47,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 09:56:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:47,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:56:47,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:56:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:56:48,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:56:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:56:49,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:56:49,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179649383] [2021-11-09 09:56:49,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179649383] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:56:49,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:56:49,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-11-09 09:56:49,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065343435] [2021-11-09 09:56:49,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:56:49,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:56:49,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:56:49,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:56:49,841 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:56:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:56:57,699 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2021-11-09 09:56:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:56:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-09 09:56:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:56:57,727 INFO L225 Difference]: With dead ends: 175 [2021-11-09 09:56:57,727 INFO L226 Difference]: Without dead ends: 125 [2021-11-09 09:56:57,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:56:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-09 09:56:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 95. [2021-11-09 09:56:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.297872340425532) internal successors, (122), 94 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:56:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2021-11-09 09:56:57,775 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 24 [2021-11-09 09:56:57,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:56:57,775 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2021-11-09 09:56:57,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:56:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2021-11-09 09:56:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:56:57,779 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:56:57,780 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:56:57,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:56:57,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:56:57,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:56:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:56:57,997 INFO L85 PathProgramCache]: Analyzing trace with hash -242595923, now seen corresponding path program 2 times [2021-11-09 09:56:57,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:56:57,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783372232] [2021-11-09 09:56:57,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:56:57,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:56:57,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:56:57,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:56:58,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 09:56:58,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:56:58,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:56:58,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-09 09:56:58,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:56:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:56:59,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:57:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:57:00,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:57:00,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783372232] [2021-11-09 09:57:00,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783372232] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:57:00,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:57:00,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-11-09 09:57:00,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325120144] [2021-11-09 09:57:00,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:57:00,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:57:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:57:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:57:00,906 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:57:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:57:07,597 INFO L93 Difference]: Finished difference Result 182 states and 230 transitions. [2021-11-09 09:57:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:57:07,599 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-09 09:57:07,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:57:07,600 INFO L225 Difference]: With dead ends: 182 [2021-11-09 09:57:07,600 INFO L226 Difference]: Without dead ends: 124 [2021-11-09 09:57:07,604 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=558, Invalid=1422, Unknown=0, NotChecked=0, Total=1980 [2021-11-09 09:57:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-09 09:57:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 90. [2021-11-09 09:57:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 89 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:57:07,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2021-11-09 09:57:07,635 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 26 [2021-11-09 09:57:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:57:07,635 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2021-11-09 09:57:07,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:57:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2021-11-09 09:57:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-09 09:57:07,637 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:57:07,637 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:57:07,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:57:07,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:57:07,858 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:57:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:57:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash 830764686, now seen corresponding path program 2 times [2021-11-09 09:57:07,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:57:07,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456134827] [2021-11-09 09:57:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:57:07,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:57:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:57:07,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:57:07,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:57:08,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:57:08,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:57:08,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:57:08,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:57:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 09:57:09,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:57:10,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 09:57:10,912 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:57:10,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456134827] [2021-11-09 09:57:10,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456134827] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:57:10,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:57:10,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2021-11-09 09:57:10,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033395267] [2021-11-09 09:57:10,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-09 09:57:10,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:57:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-09 09:57:10,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:57:10,916 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:57:16,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:57:16,447 INFO L93 Difference]: Finished difference Result 290 states and 383 transitions. [2021-11-09 09:57:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:57:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-09 09:57:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:57:16,452 INFO L225 Difference]: With dead ends: 290 [2021-11-09 09:57:16,452 INFO L226 Difference]: Without dead ends: 201 [2021-11-09 09:57:16,454 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=520, Invalid=1550, Unknown=0, NotChecked=0, Total=2070 [2021-11-09 09:57:16,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-09 09:57:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 112. [2021-11-09 09:57:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.2702702702702702) internal successors, (141), 111 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:57:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 141 transitions. [2021-11-09 09:57:16,485 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 141 transitions. Word has length 33 [2021-11-09 09:57:16,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:57:16,486 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 141 transitions. [2021-11-09 09:57:16,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:57:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 141 transitions. [2021-11-09 09:57:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 09:57:16,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:57:16,488 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:57:16,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-09 09:57:16,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:57:16,706 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:57:16,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:57:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1156561688, now seen corresponding path program 3 times [2021-11-09 09:57:16,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:57:16,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147349859] [2021-11-09 09:57:16,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:57:16,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:57:16,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:57:16,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:57:16,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0ada540-a3ec-4084-9651-19c815e15fea/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 09:57:17,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-09 09:57:17,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:57:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:57:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:57:18,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-09 09:57:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:18,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 36 [2021-11-09 09:57:19,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:19,402 INFO L354 Elim1Store]: treesize reduction 52, result has 45.3 percent of original size [2021-11-09 09:57:19,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 66 [2021-11-09 09:57:20,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:20,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:21,025 INFO L354 Elim1Store]: treesize reduction 118, result has 12.6 percent of original size [2021-11-09 09:57:21,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 82 treesize of output 87 [2021-11-09 09:57:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:25,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:25,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:25,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:25,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:57:25,861 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:57:25,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-11-09 09:57:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:57:26,491 INFO L328 TraceCheckSpWp]: Computing backward predicates...