./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array15_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array15_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa --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 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:15:34,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:15:34,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:15:34,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:15:34,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:15:34,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:15:34,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:15:34,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:15:34,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:15:34,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:15:34,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:15:34,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:15:34,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:15:34,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:15:34,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:15:34,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:15:34,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:15:34,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:15:34,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:15:34,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:15:34,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:15:34,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:15:34,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:15:34,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:15:34,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:15:34,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:15:34,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:15:34,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:15:34,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:15:34,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:15:34,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:15:34,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:15:34,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:15:34,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:15:34,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:15:34,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:15:34,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:15:34,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:15:34,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:15:34,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:15:34,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:15:34,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:15:34,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:15:34,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:15:34,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:15:34,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:15:34,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:15:34,192 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:15:34,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:15:34,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:15:34,193 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:15:34,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:15:34,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:15:34,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:15:34,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:15:34,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:15:34,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:15:34,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:15:34,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:15:34,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:15:34,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:15:34,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:15:34,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:15:34,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:15:34,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:15:34,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:15:34,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:15:34,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:15:34,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:15:34,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:15:34,196 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_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 [2021-12-06 20:15:34,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:15:34,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:15:34,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:15:34,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:15:34,403 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:15:34,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-patterns/array15_pattern.c [2021-12-06 20:15:34,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/data/05013fe14/783e115838984e2cb18503e973ce1b6b/FLAGde2e027bc [2021-12-06 20:15:34,826 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:15:34,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/sv-benchmarks/c/array-patterns/array15_pattern.c [2021-12-06 20:15:34,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/data/05013fe14/783e115838984e2cb18503e973ce1b6b/FLAGde2e027bc [2021-12-06 20:15:34,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/data/05013fe14/783e115838984e2cb18503e973ce1b6b [2021-12-06 20:15:34,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:15:34,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:15:34,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:15:34,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:15:34,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:15:34,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:15:34" (1/1) ... [2021-12-06 20:15:34,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bb638e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:34, skipping insertion in model container [2021-12-06 20:15:34,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:15:34" (1/1) ... [2021-12-06 20:15:34,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:15:34,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:15:34,983 WARN L230 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_5fe42cb8-1c17-4c14-9069-c859496300b6/sv-benchmarks/c/array-patterns/array15_pattern.c[1424,1437] [2021-12-06 20:15:34,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:15:35,004 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:15:35,012 WARN L230 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_5fe42cb8-1c17-4c14-9069-c859496300b6/sv-benchmarks/c/array-patterns/array15_pattern.c[1424,1437] [2021-12-06 20:15:35,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:15:35,030 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:15:35,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35 WrapperNode [2021-12-06 20:15:35,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:15:35,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:15:35,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:15:35,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:15:35,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,058 INFO L137 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2021-12-06 20:15:35,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:15:35,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:15:35,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:15:35,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:15:35,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:15:35,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:15:35,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:15:35,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:15:35,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (1/1) ... [2021-12-06 20:15:35,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:15:35,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:35,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:15:35,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:15:35,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:15:35,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:15:35,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:15:35,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:15:35,181 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:15:35,182 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:15:35,290 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:15:35,294 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:15:35,295 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-06 20:15:35,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:15:35 BoogieIcfgContainer [2021-12-06 20:15:35,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:15:35,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:15:35,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:15:35,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:15:35,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:15:34" (1/3) ... [2021-12-06 20:15:35,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6030e8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:15:35, skipping insertion in model container [2021-12-06 20:15:35,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:15:35" (2/3) ... [2021-12-06 20:15:35,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6030e8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:15:35, skipping insertion in model container [2021-12-06 20:15:35,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:15:35" (3/3) ... [2021-12-06 20:15:35,302 INFO L111 eAbstractionObserver]: Analyzing ICFG array15_pattern.c [2021-12-06 20:15:35,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:15:35,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:15:35,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:15:35,360 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 [2021-12-06 20:15:35,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:15:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 20:15:35,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:35,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:35,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash 179087049, now seen corresponding path program 1 times [2021-12-06 20:15:35,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359828693] [2021-12-06 20:15:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:35,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:15:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:15:35,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:35,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359828693] [2021-12-06 20:15:35,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359828693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:35,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:35,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:15:35,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077165763] [2021-12-06 20:15:35,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:35,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:15:35,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:15:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:15:35,544 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 20:15:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:35,564 INFO L93 Difference]: Finished difference Result 61 states and 93 transitions. [2021-12-06 20:15:35,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:15:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 20:15:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:35,573 INFO L225 Difference]: With dead ends: 61 [2021-12-06 20:15:35,574 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 20:15:35,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:15:35,581 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:35,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 20:15:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 20:15:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-06 20:15:35,618 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2021-12-06 20:15:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:35,619 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-06 20:15:35,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 20:15:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-12-06 20:15:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 20:15:35,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:35,622 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:35,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:15:35,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:35,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1195633489, now seen corresponding path program 1 times [2021-12-06 20:15:35,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:35,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158210003] [2021-12-06 20:15:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:35,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:35,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792452712] [2021-12-06 20:15:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:35,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:35,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:35,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:15:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:35,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:15:35,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:15:35,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:15:35,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:35,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158210003] [2021-12-06 20:15:35,813 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:35,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792452712] [2021-12-06 20:15:35,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792452712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:35,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:35,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:15:35,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728078745] [2021-12-06 20:15:35,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:35,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:15:35,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:15:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:15:35,817 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:15:35,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:35,911 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2021-12-06 20:15:35,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:15:35,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2021-12-06 20:15:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:35,912 INFO L225 Difference]: With dead ends: 60 [2021-12-06 20:15:35,912 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 20:15:35,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:15:35,915 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:35,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 53 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 20:15:35,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2021-12-06 20:15:35,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2021-12-06 20:15:35,925 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2021-12-06 20:15:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:35,925 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2021-12-06 20:15:35,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:15:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2021-12-06 20:15:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 20:15:35,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:35,927 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:35,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:15:36,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:36,129 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash -712222617, now seen corresponding path program 1 times [2021-12-06 20:15:36,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:36,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53592098] [2021-12-06 20:15:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:36,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:36,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829978657] [2021-12-06 20:15:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:36,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:36,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:36,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:15:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:36,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:15:36,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 20:15:36,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:15:36,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53592098] [2021-12-06 20:15:36,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829978657] [2021-12-06 20:15:36,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829978657] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:15:36,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:15:36,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:15:36,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257083951] [2021-12-06 20:15:36,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:15:36,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:15:36,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:15:36,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:15:36,373 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:15:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:36,407 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2021-12-06 20:15:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:15:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-06 20:15:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:36,408 INFO L225 Difference]: With dead ends: 63 [2021-12-06 20:15:36,408 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 20:15:36,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:15:36,410 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:36,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 49 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 20:15:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-12-06 20:15:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-12-06 20:15:36,421 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2021-12-06 20:15:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:36,422 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-12-06 20:15:36,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:15:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-12-06 20:15:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 20:15:36,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:36,424 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:36,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:15:36,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:36,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:36,628 INFO L85 PathProgramCache]: Analyzing trace with hash -459431893, now seen corresponding path program 1 times [2021-12-06 20:15:36,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:36,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263436742] [2021-12-06 20:15:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:36,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:36,681 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:36,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537614716] [2021-12-06 20:15:36,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:36,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:36,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:36,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:36,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:15:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:36,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:15:36,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:15:36,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 20:15:37,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:37,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263436742] [2021-12-06 20:15:37,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:37,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537614716] [2021-12-06 20:15:37,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537614716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:37,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:37,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2021-12-06 20:15:37,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593312430] [2021-12-06 20:15:37,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:37,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 20:15:37,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 20:15:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-12-06 20:15:37,288 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 20:15:37,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:37,577 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-12-06 20:15:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:15:37,578 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 39 [2021-12-06 20:15:37,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:37,581 INFO L225 Difference]: With dead ends: 107 [2021-12-06 20:15:37,581 INFO L226 Difference]: Without dead ends: 85 [2021-12-06 20:15:37,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:15:37,583 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 113 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:37,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 163 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:15:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-06 20:15:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2021-12-06 20:15:37,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 50 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 20:15:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2021-12-06 20:15:37,596 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 39 [2021-12-06 20:15:37,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:37,597 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2021-12-06 20:15:37,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 20:15:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2021-12-06 20:15:37,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 20:15:37,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:37,599 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:37,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:15:37,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:37,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1046237907, now seen corresponding path program 1 times [2021-12-06 20:15:37,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:37,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844708662] [2021-12-06 20:15:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:37,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:37,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:37,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996626394] [2021-12-06 20:15:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:37,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:37,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:37,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:37,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:15:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:15:37,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 20:15:37,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:37,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 31 [2021-12-06 20:15:37,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-12-06 20:15:38,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 107 [2021-12-06 20:15:38,270 INFO L354 Elim1Store]: treesize reduction 248, result has 27.3 percent of original size [2021-12-06 20:15:38,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 case distinctions, treesize of input 106 treesize of output 172 [2021-12-06 20:15:38,314 INFO L354 Elim1Store]: treesize reduction 34, result has 53.4 percent of original size [2021-12-06 20:15:38,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 106 [2021-12-06 20:15:38,479 INFO L354 Elim1Store]: treesize reduction 53, result has 27.4 percent of original size [2021-12-06 20:15:38,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 94 [2021-12-06 20:15:38,570 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 39 treesize of output 27 [2021-12-06 20:15:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:15:38,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:38,931 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 55 treesize of output 51 [2021-12-06 20:15:38,939 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:15:38,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 58 [2021-12-06 20:15:38,955 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 32 treesize of output 17 [2021-12-06 20:15:38,973 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 49 treesize of output 23 [2021-12-06 20:15:39,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:15:39,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 100 [2021-12-06 20:15:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:15:39,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:39,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844708662] [2021-12-06 20:15:39,694 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:39,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996626394] [2021-12-06 20:15:39,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996626394] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:39,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:39,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2021-12-06 20:15:39,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518740770] [2021-12-06 20:15:39,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:39,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:15:39,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:39,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:15:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:15:39,696 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 20:15:42,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 20:15:42,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:42,422 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2021-12-06 20:15:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:15:42,423 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 39 [2021-12-06 20:15:42,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:42,424 INFO L225 Difference]: With dead ends: 92 [2021-12-06 20:15:42,424 INFO L226 Difference]: Without dead ends: 88 [2021-12-06 20:15:42,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:15:42,425 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 34 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:42,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 218 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 276 Invalid, 1 Unknown, 25 Unchecked, 2.6s Time] [2021-12-06 20:15:42,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-06 20:15:42,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2021-12-06 20:15:42,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 64 states have internal predecessors, (76), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 20:15:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 92 transitions. [2021-12-06 20:15:42,434 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 92 transitions. Word has length 39 [2021-12-06 20:15:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:42,435 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 92 transitions. [2021-12-06 20:15:42,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 20:15:42,435 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 92 transitions. [2021-12-06 20:15:42,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 20:15:42,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:42,436 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:42,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:15:42,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:42,638 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:42,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -252023569, now seen corresponding path program 2 times [2021-12-06 20:15:42,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:42,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755560187] [2021-12-06 20:15:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:42,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:42,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:42,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064837921] [2021-12-06 20:15:42,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:15:42,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:42,664 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:42,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:15:42,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:15:42,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:42,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:15:42,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:15:42,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:42,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:15:42,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:42,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755560187] [2021-12-06 20:15:42,820 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:42,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064837921] [2021-12-06 20:15:42,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064837921] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:42,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:42,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 20:15:42,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354040061] [2021-12-06 20:15:42,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:42,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:15:42,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:42,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:15:42,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:15:42,822 INFO L87 Difference]: Start difference. First operand 77 states and 92 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:42,947 INFO L93 Difference]: Finished difference Result 155 states and 184 transitions. [2021-12-06 20:15:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:15:42,947 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-12-06 20:15:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:42,949 INFO L225 Difference]: With dead ends: 155 [2021-12-06 20:15:42,949 INFO L226 Difference]: Without dead ends: 117 [2021-12-06 20:15:42,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:15:42,950 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 140 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:42,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 101 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-06 20:15:42,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 90. [2021-12-06 20:15:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 77 states have internal predecessors, (90), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 20:15:42,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2021-12-06 20:15:42,962 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 41 [2021-12-06 20:15:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:42,963 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2021-12-06 20:15:42,963 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2021-12-06 20:15:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 20:15:42,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:42,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:42,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:15:43,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:43,165 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 796161581, now seen corresponding path program 2 times [2021-12-06 20:15:43,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859995904] [2021-12-06 20:15:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:43,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:43,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:43,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804159859] [2021-12-06 20:15:43,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:15:43,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:43,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:43,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:43,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:15:43,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:15:43,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:15:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 20:15:43,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:43,339 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 20:15:43,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:43,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859995904] [2021-12-06 20:15:43,340 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:43,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804159859] [2021-12-06 20:15:43,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804159859] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:43,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:43,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-06 20:15:43,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970207193] [2021-12-06 20:15:43,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:43,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:15:43,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:43,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:15:43,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:15:43,341 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:43,463 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2021-12-06 20:15:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:15:43,464 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2021-12-06 20:15:43,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:43,465 INFO L225 Difference]: With dead ends: 167 [2021-12-06 20:15:43,465 INFO L226 Difference]: Without dead ends: 120 [2021-12-06 20:15:43,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:15:43,467 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:43,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-12-06 20:15:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2021-12-06 20:15:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 90 states have (on average 1.2) internal successors, (108), 91 states have internal predecessors, (108), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 20:15:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 124 transitions. [2021-12-06 20:15:43,485 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 124 transitions. Word has length 41 [2021-12-06 20:15:43,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:43,486 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 124 transitions. [2021-12-06 20:15:43,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:43,486 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 124 transitions. [2021-12-06 20:15:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-06 20:15:43,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:43,488 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:43,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:15:43,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 20:15:43,688 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:43,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash 178867369, now seen corresponding path program 3 times [2021-12-06 20:15:43,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:43,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832687579] [2021-12-06 20:15:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:43,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:43,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:43,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686817303] [2021-12-06 20:15:43,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:15:43,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:43,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:43,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:15:43,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 20:15:43,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:15:43,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:15:43,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:15:43,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:43,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832687579] [2021-12-06 20:15:43,865 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:43,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686817303] [2021-12-06 20:15:43,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686817303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:43,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:43,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 20:15:43,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134670228] [2021-12-06 20:15:43,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:43,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:15:43,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:15:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:15:43,867 INFO L87 Difference]: Start difference. First operand 104 states and 124 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:43,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:43,952 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2021-12-06 20:15:43,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:15:43,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2021-12-06 20:15:43,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:43,953 INFO L225 Difference]: With dead ends: 165 [2021-12-06 20:15:43,953 INFO L226 Difference]: Without dead ends: 132 [2021-12-06 20:15:43,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:15:43,954 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:43,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 111 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-06 20:15:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 106. [2021-12-06 20:15:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 92 states have (on average 1.1956521739130435) internal successors, (110), 93 states have internal predecessors, (110), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-06 20:15:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2021-12-06 20:15:43,964 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 44 [2021-12-06 20:15:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:43,965 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2021-12-06 20:15:43,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2021-12-06 20:15:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 20:15:43,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:43,966 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:43,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:15:44,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:44,168 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:44,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1693722629, now seen corresponding path program 3 times [2021-12-06 20:15:44,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:44,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126291064] [2021-12-06 20:15:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:44,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:44,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:44,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028122842] [2021-12-06 20:15:44,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:15:44,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:44,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:44,199 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:44,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:15:44,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 20:15:44,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:44,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:15:44,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-06 20:15:44,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 20:15:44,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:44,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126291064] [2021-12-06 20:15:44,595 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:44,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028122842] [2021-12-06 20:15:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028122842] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:44,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:44,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2021-12-06 20:15:44,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313974062] [2021-12-06 20:15:44,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:44,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 20:15:44,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 20:15:44,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:15:44,598 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 21 states, 19 states have (on average 2.473684210526316) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 20:15:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:44,866 INFO L93 Difference]: Finished difference Result 143 states and 169 transitions. [2021-12-06 20:15:44,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:15:44,867 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.473684210526316) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2021-12-06 20:15:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:44,868 INFO L225 Difference]: With dead ends: 143 [2021-12-06 20:15:44,868 INFO L226 Difference]: Without dead ends: 139 [2021-12-06 20:15:44,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 20:15:44,870 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 133 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:44,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 172 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-12-06 20:15:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 90. [2021-12-06 20:15:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 80 states have internal predecessors, (94), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 20:15:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2021-12-06 20:15:44,882 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 48 [2021-12-06 20:15:44,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:44,882 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2021-12-06 20:15:44,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.473684210526316) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 20:15:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2021-12-06 20:15:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 20:15:44,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:44,884 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:44,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:15:45,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:45,085 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:45,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash 857043023, now seen corresponding path program 4 times [2021-12-06 20:15:45,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:45,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680475587] [2021-12-06 20:15:45,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:45,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:45,096 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:45,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622001028] [2021-12-06 20:15:45,096 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:15:45,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:45,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:45,098 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:45,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 20:15:45,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:15:45,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:45,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:15:45,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 20:15:45,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 20:15:45,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:45,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680475587] [2021-12-06 20:15:45,245 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:45,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622001028] [2021-12-06 20:15:45,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622001028] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:45,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:45,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 20:15:45,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880355762] [2021-12-06 20:15:45,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:45,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:15:45,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:15:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:15:45,246 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:45,337 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2021-12-06 20:15:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 20:15:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2021-12-06 20:15:45,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:45,338 INFO L225 Difference]: With dead ends: 109 [2021-12-06 20:15:45,338 INFO L226 Difference]: Without dead ends: 69 [2021-12-06 20:15:45,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:15:45,339 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:45,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 97 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:45,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-06 20:15:45,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2021-12-06 20:15:45,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.2) internal successors, (66), 55 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2021-12-06 20:15:45,344 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 49 [2021-12-06 20:15:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:45,345 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2021-12-06 20:15:45,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2021-12-06 20:15:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 20:15:45,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:45,345 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:45,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 20:15:45,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 20:15:45,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:45,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1725179695, now seen corresponding path program 4 times [2021-12-06 20:15:45,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:45,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652792994] [2021-12-06 20:15:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:45,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:45,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:45,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983881503] [2021-12-06 20:15:45,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:15:45,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:45,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:45,565 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:45,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 20:15:45,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:15:45,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:45,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:15:45,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 20:15:45,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:45,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-06 20:15:45,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652792994] [2021-12-06 20:15:45,740 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:45,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983881503] [2021-12-06 20:15:45,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983881503] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:45,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:45,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-06 20:15:45,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515836836] [2021-12-06 20:15:45,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:45,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:15:45,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:45,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:15:45,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:15:45,741 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:15:45,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:45,801 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2021-12-06 20:15:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:15:45,802 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2021-12-06 20:15:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:45,802 INFO L225 Difference]: With dead ends: 75 [2021-12-06 20:15:45,802 INFO L226 Difference]: Without dead ends: 64 [2021-12-06 20:15:45,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:15:45,803 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 87 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:45,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 55 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:15:45,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-06 20:15:45,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-12-06 20:15:45,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2021-12-06 20:15:45,807 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 53 [2021-12-06 20:15:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:45,808 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2021-12-06 20:15:45,808 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), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 20:15:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2021-12-06 20:15:45,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 20:15:45,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:45,808 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:45,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 20:15:46,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:46,010 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash 835598415, now seen corresponding path program 5 times [2021-12-06 20:15:46,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:46,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205454915] [2021-12-06 20:15:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:46,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:46,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:46,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928775268] [2021-12-06 20:15:46,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:15:46,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:46,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:46,041 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:46,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 20:15:46,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-12-06 20:15:46,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:46,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:15:46,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 20:15:46,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:15:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 20:15:46,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:15:46,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205454915] [2021-12-06 20:15:46,260 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:15:46,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928775268] [2021-12-06 20:15:46,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928775268] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:15:46,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:15:46,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-06 20:15:46,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495042738] [2021-12-06 20:15:46,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:15:46,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:15:46,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:15:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:15:46,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:15:46,261 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:15:46,371 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-12-06 20:15:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:15:46,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2021-12-06 20:15:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:15:46,372 INFO L225 Difference]: With dead ends: 63 [2021-12-06 20:15:46,372 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 20:15:46,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:15:46,373 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:15:46,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 79 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:15:46,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 20:15:46,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-12-06 20:15:46,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:15:46,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-12-06 20:15:46,377 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 55 [2021-12-06 20:15:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:15:46,377 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-12-06 20:15:46,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:15:46,377 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-12-06 20:15:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 20:15:46,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:15:46,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:15:46,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 20:15:46,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 20:15:46,579 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:15:46,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:15:46,580 INFO L85 PathProgramCache]: Analyzing trace with hash 11450257, now seen corresponding path program 6 times [2021-12-06 20:15:46,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:15:46,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698726223] [2021-12-06 20:15:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:15:46,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:15:46,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:15:46,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106523155] [2021-12-06 20:15:46,608 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 20:15:46,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:15:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:15:46,610 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:15:46,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 20:15:47,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-06 20:15:47,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:15:47,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 20:15:47,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:15:47,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2021-12-06 20:15:47,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-12-06 20:15:47,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-12-06 20:15:47,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 70 [2021-12-06 20:15:47,241 INFO L354 Elim1Store]: treesize reduction 136, result has 18.6 percent of original size [2021-12-06 20:15:47,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 69 treesize of output 91 [2021-12-06 20:15:47,258 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-12-06 20:15:47,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 19 [2021-12-06 20:15:47,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 61 treesize of output 24 [2021-12-06 20:15:47,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 90 [2021-12-06 20:15:47,504 INFO L354 Elim1Store]: treesize reduction 335, result has 17.5 percent of original size [2021-12-06 20:15:47,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 89 treesize of output 134 [2021-12-06 20:15:47,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 54 treesize of output 10 [2021-12-06 20:15:47,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 70 [2021-12-06 20:15:47,733 INFO L354 Elim1Store]: treesize reduction 272, result has 15.8 percent of original size [2021-12-06 20:15:47,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 69 treesize of output 107 [2021-12-06 20:15:47,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:15:47,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 21 [2021-12-06 20:16:07,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 92 [2021-12-06 20:16:07,631 INFO L354 Elim1Store]: treesize reduction 437, result has 24.7 percent of original size [2021-12-06 20:16:07,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 91 treesize of output 212 [2021-12-06 20:16:44,419 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:16:44,585 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:16:45,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:16:45,848 INFO L354 Elim1Store]: treesize reduction 322, result has 13.2 percent of original size [2021-12-06 20:16:45,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 630 treesize of output 531 [2021-12-06 20:18:21,514 INFO L354 Elim1Store]: treesize reduction 761, result has 29.6 percent of original size [2021-12-06 20:18:21,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 473 treesize of output 512 [2021-12-06 20:18:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 48 refuted. 1 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 20:18:35,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:18:44,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:44,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698726223] [2021-12-06 20:18:44,897 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:18:44,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106523155] [2021-12-06 20:18:44,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106523155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:18:44,897 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:18:44,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2021-12-06 20:18:44,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715457820] [2021-12-06 20:18:44,897 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:18:44,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 20:18:44,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 20:18:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2665, Unknown=27, NotChecked=0, Total=3080 [2021-12-06 20:18:44,899 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 34 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:18:54,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:54,656 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2021-12-06 20:18:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 20:18:54,656 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 34 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2021-12-06 20:18:54,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:54,657 INFO L225 Difference]: With dead ends: 95 [2021-12-06 20:18:54,657 INFO L226 Difference]: Without dead ends: 91 [2021-12-06 20:18:54,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 74.5s TimeCoverageRelationStatistics Valid=448, Invalid=3181, Unknown=31, NotChecked=0, Total=3660 [2021-12-06 20:18:54,659 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:54,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 246 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 224 Unchecked, 0.0s Time] [2021-12-06 20:18:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-06 20:18:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-12-06 20:18:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:18:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2021-12-06 20:18:54,668 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 57 [2021-12-06 20:18:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:54,668 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2021-12-06 20:18:54,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 34 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:18:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2021-12-06 20:18:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 20:18:54,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:54,669 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:54,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 20:18:54,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 20:18:54,870 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:54,870 INFO L85 PathProgramCache]: Analyzing trace with hash 230304975, now seen corresponding path program 5 times [2021-12-06 20:18:54,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:54,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212464414] [2021-12-06 20:18:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:54,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:54,876 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:18:54,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253239014] [2021-12-06 20:18:54,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 20:18:54,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:18:54,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:18:54,877 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:18:54,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 20:18:55,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-06 20:18:55,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:18:55,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 20:18:55,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:18:55,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:18:55,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 58 [2021-12-06 20:18:55,118 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 31 treesize of output 18 [2021-12-06 20:18:55,132 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 52 treesize of output 22 [2021-12-06 20:18:55,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 74 [2021-12-06 20:18:55,194 INFO L354 Elim1Store]: treesize reduction 160, result has 19.6 percent of original size [2021-12-06 20:18:55,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 73 treesize of output 99 [2021-12-06 20:18:55,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 85 treesize of output 39 [2021-12-06 20:18:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 90 treesize of output 45 [2021-12-06 20:18:55,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 88 [2021-12-06 20:18:55,453 INFO L354 Elim1Store]: treesize reduction 321, result has 17.3 percent of original size [2021-12-06 20:18:55,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 87 treesize of output 130 [2021-12-06 20:18:55,460 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:18:55,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 131 treesize of output 62 [2021-12-06 20:18:55,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 97 [2021-12-06 20:18:55,673 INFO L354 Elim1Store]: treesize reduction 476, result has 16.3 percent of original size [2021-12-06 20:18:55,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 96 treesize of output 155 [2021-12-06 20:18:55,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:55,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 64 [2021-12-06 20:18:56,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 116 [2021-12-06 20:18:56,692 INFO L354 Elim1Store]: treesize reduction 572, result has 22.5 percent of original size [2021-12-06 20:18:56,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 case distinctions, treesize of input 115 treesize of output 235 [2021-12-06 20:18:57,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:57,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:57,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:57,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:57,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:57,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:18:57,512 INFO L354 Elim1Store]: treesize reduction 127, result has 43.0 percent of original size [2021-12-06 20:18:57,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 200 treesize of output 229 [2021-12-06 20:18:58,743 INFO L354 Elim1Store]: treesize reduction 248, result has 1.2 percent of original size [2021-12-06 20:18:58,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 117 treesize of output 45 [2021-12-06 20:18:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:18:58,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:03,802 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~column~0#1_101| Int)) (or (< (+ |v_ULTIMATE.start_main_~column~0#1_101| 1) c_~ARR_SIZE~0) (<= c_~ARR_SIZE~0 |v_ULTIMATE.start_main_~column~0#1_101|) (let ((.cse0 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |v_ULTIMATE.start_main_~column~0#1_101| 4))) (.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse5 (* |c_ULTIMATE.start_main_~index2~0#1| 4)) (.cse3 (* .cse0 4)) (.cse6 (* 2 c_~ARR_SIZE~0))) (and (or (< 2147483647 .cse0) (<= (let ((.cse1 (store .cse4 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~index1~0#1| .cse3) .cse5) |c_ULTIMATE.start_main_#t~ite10#1|))) (+ (select .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse1 .cse2) (select .cse1 (+ .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 2 |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|)))) .cse6)) (or (<= .cse0 2147483647) (<= (let ((.cse7 (store .cse4 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse5 (* |c_ULTIMATE.start_main_~index1~0#1| (+ (- 17179869184) .cse3))) |c_ULTIMATE.start_main_#t~ite10#1|))) (+ 2 (select .cse7 .cse2) (select .cse7 (+ .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869180))) (select .cse7 (+ (- 17179869184) .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset|))) .cse6))))))) is different from false [2021-12-06 20:19:04,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:04,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212464414] [2021-12-06 20:19:04,274 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:19:04,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253239014] [2021-12-06 20:19:04,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253239014] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:04,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:19:04,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2021-12-06 20:19:04,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891129253] [2021-12-06 20:19:04,274 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:04,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 20:19:04,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:04,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 20:19:04,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1449, Unknown=1, NotChecked=80, Total=1806 [2021-12-06 20:19:04,275 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:19:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:05,530 INFO L93 Difference]: Finished difference Result 170 states and 206 transitions. [2021-12-06 20:19:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 20:19:05,531 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2021-12-06 20:19:05,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:05,532 INFO L225 Difference]: With dead ends: 170 [2021-12-06 20:19:05,532 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 20:19:05,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=436, Invalid=2117, Unknown=1, NotChecked=98, Total=2652 [2021-12-06 20:19:05,533 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:05,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 264 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 365 Invalid, 0 Unknown, 194 Unchecked, 0.7s Time] [2021-12-06 20:19:05,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 20:19:05,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 131. [2021-12-06 20:19:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 116 states have internal predecessors, (139), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 20:19:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2021-12-06 20:19:05,547 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 57 [2021-12-06 20:19:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:05,547 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2021-12-06 20:19:05,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:19:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2021-12-06 20:19:05,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 20:19:05,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:05,548 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:05,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-06 20:19:05,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 20:19:05,749 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:05,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:05,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1720947117, now seen corresponding path program 7 times [2021-12-06 20:19:05,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:05,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146180722] [2021-12-06 20:19:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:05,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:05,772 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:19:05,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987663147] [2021-12-06 20:19:05,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 20:19:05,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:05,773 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:05,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 20:19:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:19:05,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 20:19:05,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 20:19:05,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:05,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146180722] [2021-12-06 20:19:05,985 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:19:05,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987663147] [2021-12-06 20:19:05,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987663147] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:05,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:19:05,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:19:05,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118217372] [2021-12-06 20:19:05,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:05,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:05,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:05,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:05,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:05,986 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:06,183 INFO L93 Difference]: Finished difference Result 274 states and 331 transitions. [2021-12-06 20:19:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:19:06,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2021-12-06 20:19:06,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:06,185 INFO L225 Difference]: With dead ends: 274 [2021-12-06 20:19:06,185 INFO L226 Difference]: Without dead ends: 202 [2021-12-06 20:19:06,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:19:06,186 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 139 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:06,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 110 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:19:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-06 20:19:06,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 158. [2021-12-06 20:19:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 140 states have internal predecessors, (165), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 20:19:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 187 transitions. [2021-12-06 20:19:06,201 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 187 transitions. Word has length 59 [2021-12-06 20:19:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:06,201 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 187 transitions. [2021-12-06 20:19:06,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 187 transitions. [2021-12-06 20:19:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 20:19:06,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:06,202 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:06,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 20:19:06,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 20:19:06,403 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:06,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1742977455, now seen corresponding path program 6 times [2021-12-06 20:19:06,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:06,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711469763] [2021-12-06 20:19:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:06,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:06,409 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:19:06,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132352240] [2021-12-06 20:19:06,410 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 20:19:06,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:06,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:06,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 20:19:06,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-06 20:19:06,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:06,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:19:06,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 20:19:06,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 20:19:06,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:06,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711469763] [2021-12-06 20:19:06,716 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:19:06,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132352240] [2021-12-06 20:19:06,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132352240] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:06,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:19:06,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:19:06,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680221708] [2021-12-06 20:19:06,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:06,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:06,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:06,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:06,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:06,718 INFO L87 Difference]: Start difference. First operand 158 states and 187 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:07,108 INFO L93 Difference]: Finished difference Result 241 states and 279 transitions. [2021-12-06 20:19:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 20:19:07,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2021-12-06 20:19:07,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:07,110 INFO L225 Difference]: With dead ends: 241 [2021-12-06 20:19:07,110 INFO L226 Difference]: Without dead ends: 237 [2021-12-06 20:19:07,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:19:07,111 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 40 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:07,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 191 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:19:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-06 20:19:07,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 162. [2021-12-06 20:19:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 144 states have (on average 1.1805555555555556) internal successors, (170), 144 states have internal predecessors, (170), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 20:19:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2021-12-06 20:19:07,129 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2021-12-06 20:19:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:07,129 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2021-12-06 20:19:07,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2021-12-06 20:19:07,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 20:19:07,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:07,130 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:07,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 20:19:07,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 20:19:07,331 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1029790343, now seen corresponding path program 8 times [2021-12-06 20:19:07,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:07,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683734286] [2021-12-06 20:19:07,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:07,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:07,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:19:07,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793751408] [2021-12-06 20:19:07,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:19:07,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:07,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:07,346 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:07,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 20:19:07,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:19:07,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:07,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:19:07,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 20:19:07,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 50 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 20:19:07,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:07,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683734286] [2021-12-06 20:19:07,620 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:19:07,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793751408] [2021-12-06 20:19:07,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793751408] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:07,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:19:07,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:19:07,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528807573] [2021-12-06 20:19:07,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:07,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:07,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:07,622 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:07,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:07,861 INFO L93 Difference]: Finished difference Result 210 states and 239 transitions. [2021-12-06 20:19:07,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 20:19:07,861 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2021-12-06 20:19:07,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:07,862 INFO L225 Difference]: With dead ends: 210 [2021-12-06 20:19:07,862 INFO L226 Difference]: Without dead ends: 165 [2021-12-06 20:19:07,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:19:07,863 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 109 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:07,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 110 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:19:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-06 20:19:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 152. [2021-12-06 20:19:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 137 states have (on average 1.145985401459854) internal successors, (157), 137 states have internal predecessors, (157), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 20:19:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 175 transitions. [2021-12-06 20:19:07,878 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 175 transitions. Word has length 64 [2021-12-06 20:19:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:07,879 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 175 transitions. [2021-12-06 20:19:07,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:07,879 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 175 transitions. [2021-12-06 20:19:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 20:19:07,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:07,880 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:07,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 20:19:08,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 20:19:08,081 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:08,082 INFO L85 PathProgramCache]: Analyzing trace with hash -637552279, now seen corresponding path program 9 times [2021-12-06 20:19:08,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:08,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989161352] [2021-12-06 20:19:08,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:08,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:08,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:19:08,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873442744] [2021-12-06 20:19:08,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:19:08,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:08,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:08,113 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:08,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 20:19:08,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-12-06 20:19:08,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:19:08,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:19:08,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 35 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 20:19:08,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 20 proven. 48 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 20:19:09,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989161352] [2021-12-06 20:19:09,008 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:19:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873442744] [2021-12-06 20:19:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873442744] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:09,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:19:09,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:19:09,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699344204] [2021-12-06 20:19:09,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:09,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:19:09,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:19:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:19:09,009 INFO L87 Difference]: Start difference. First operand 152 states and 175 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:09,391 INFO L93 Difference]: Finished difference Result 261 states and 296 transitions. [2021-12-06 20:19:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:19:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2021-12-06 20:19:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:09,393 INFO L225 Difference]: With dead ends: 261 [2021-12-06 20:19:09,393 INFO L226 Difference]: Without dead ends: 177 [2021-12-06 20:19:09,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=270, Invalid=600, Unknown=0, NotChecked=0, Total=870 [2021-12-06 20:19:09,394 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 59 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:09,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 169 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:19:09,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-06 20:19:09,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 129. [2021-12-06 20:19:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 114 states have (on average 1.1228070175438596) internal successors, (128), 114 states have internal predecessors, (128), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 20:19:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 146 transitions. [2021-12-06 20:19:09,406 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 146 transitions. Word has length 64 [2021-12-06 20:19:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:09,406 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 146 transitions. [2021-12-06 20:19:09,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:19:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 146 transitions. [2021-12-06 20:19:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 20:19:09,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:09,407 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:09,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 20:19:09,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 20:19:09,609 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1359141662, now seen corresponding path program 1 times [2021-12-06 20:19:09,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:09,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253166979] [2021-12-06 20:19:09,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:09,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:09,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:19:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838714490] [2021-12-06 20:19:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:09,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:09,637 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:09,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 20:19:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:10,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-06 20:19:10,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:10,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:19:10,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:19:10,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:19:10,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 20:19:10,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:19:10,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 93 [2021-12-06 20:19:10,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 26 [2021-12-06 20:19:10,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-06 20:19:10,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 88 [2021-12-06 20:19:10,616 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:19:10,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 53 treesize of output 26 [2021-12-06 20:19:10,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 20:19:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 103 [2021-12-06 20:19:10,758 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:19:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:10,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 39 [2021-12-06 20:19:11,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 98 [2021-12-06 20:19:11,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:11,622 INFO L354 Elim1Store]: treesize reduction 95, result has 43.5 percent of original size [2021-12-06 20:19:11,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 198 [2021-12-06 20:19:11,964 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:19:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:12,140 INFO L354 Elim1Store]: treesize reduction 49, result has 50.0 percent of original size [2021-12-06 20:19:12,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 210 treesize of output 177 [2021-12-06 20:19:17,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 132 [2021-12-06 20:19:17,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:17,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:17,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:17,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:17,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:17,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:18,474 INFO L354 Elim1Store]: treesize reduction 468, result has 17.0 percent of original size [2021-12-06 20:19:18,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 241 [2021-12-06 20:19:19,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:19,885 INFO L354 Elim1Store]: treesize reduction 139, result has 35.9 percent of original size [2021-12-06 20:19:19,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 239 treesize of output 231 [2021-12-06 20:19:35,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:19:35,809 INFO L354 Elim1Store]: treesize reduction 68, result has 67.6 percent of original size [2021-12-06 20:19:35,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 19 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 283 treesize of output 254 [2021-12-06 20:19:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 20:19:40,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:20:11,424 WARN L227 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:21:51,077 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_#t~nondet7#1| Int)) (or (let ((.cse22 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse19 (* .cse22 4))) (let ((.cse20 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse21 (* |c_ULTIMATE.start_main_~index2~0#1| 4)) (.cse23 (+ (- 17179869184) .cse19)) (.cse8 (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse10 (<= .cse22 2147483647)) (.cse1 (+ .cse19 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869180))) (.cse2 (+ (- 17179869184) .cse19 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (.cse4 (store .cse20 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse21 (* |c_ULTIMATE.start_main_~index1~0#1| .cse23)) .cse8)) (.cse6 (* |ULTIMATE.start_main_#t~nondet7#1| .cse23)) (.cse11 (< 2147483647 .cse22)) (.cse13 (+ .cse19 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (.cse3 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse14 (+ .cse19 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse15 (store .cse20 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |c_ULTIMATE.start_main_~index1~0#1| .cse19) .cse21) .cse8)) (.cse5 (* |ULTIMATE.start_main_#t~nondet7#1| (- 4))) (.cse7 (* c_~ARR_SIZE~0 4)) (.cse16 (* |ULTIMATE.start_main_#t~nondet7#1| .cse19)) (.cse9 (* 2 c_~ARR_SIZE~0))) (and (or (and (or (<= (let ((.cse0 (store .cse4 (+ .cse5 .cse6 .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse8))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array~0#1.offset|) 2 (select .cse0 .cse1) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 .cse2) (select .cse0 .cse3))) .cse9) .cse10) (or .cse11 (<= (let ((.cse12 (store .cse15 (+ .cse5 .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse16) .cse8))) (+ (select .cse12 .cse13) (select .cse12 .cse3) 2 |c_ULTIMATE.start_main_~sum~0#1| (select .cse12 .cse14) (select .cse12 |c_ULTIMATE.start_main_~#array~0#1.offset|))) .cse9))) (<= |ULTIMATE.start_main_#t~nondet7#1| 0)) (or (< c_~ARR_SIZE~0 (+ 2 |ULTIMATE.start_main_#t~nondet7#1|)) (and (or .cse10 (<= (let ((.cse17 (store .cse4 (+ .cse5 .cse6 .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 8)) .cse8))) (+ (select .cse17 .cse1) (select .cse17 .cse3) 2 (select .cse17 .cse2) |c_ULTIMATE.start_main_~sum~0#1| (select .cse17 |c_ULTIMATE.start_main_~#array~0#1.offset|))) .cse9)) (or .cse11 (<= (let ((.cse18 (store .cse15 (+ .cse5 .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse16 (- 8)) .cse8))) (+ (select .cse18 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse18 .cse13) 2 (select .cse18 .cse3) |c_ULTIMATE.start_main_~sum~0#1| (select .cse18 .cse14))) .cse9))))))))) (<= c_~ARR_SIZE~0 |ULTIMATE.start_main_#t~nondet7#1|) (< |ULTIMATE.start_main_#t~nondet7#1| 0))) (and (not (= c_~ARR_SIZE~0 (+ 2 |c_ULTIMATE.start_main_~temp~0#1|))) (not (= c_~ARR_SIZE~0 |c_ULTIMATE.start_main_~temp~0#1|)))) is different from true [2021-12-06 20:22:59,694 WARN L227 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 20:22:59,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253166979] [2021-12-06 20:22:59,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:22:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838714490] [2021-12-06 20:22:59,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838714490] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:22:59,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:22:59,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2021-12-06 20:22:59,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297356784] [2021-12-06 20:22:59,696 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:22:59,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 20:22:59,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 20:22:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=3737, Unknown=14, NotChecked=126, Total=4290 [2021-12-06 20:22:59,698 INFO L87 Difference]: Start difference. First operand 129 states and 146 transitions. Second operand has 41 states, 39 states have (on average 1.435897435897436) internal successors, (56), 35 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:23:01,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:01,269 INFO L93 Difference]: Finished difference Result 164 states and 184 transitions. [2021-12-06 20:23:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-06 20:23:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 1.435897435897436) internal successors, (56), 35 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 72 [2021-12-06 20:23:01,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:01,270 INFO L225 Difference]: With dead ends: 164 [2021-12-06 20:23:01,270 INFO L226 Difference]: Without dead ends: 144 [2021-12-06 20:23:01,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 86.6s TimeCoverageRelationStatistics Valid=496, Invalid=4464, Unknown=14, NotChecked=138, Total=5112 [2021-12-06 20:23:01,272 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 651 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:01,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 323 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 264 Invalid, 0 Unknown, 651 Unchecked, 0.3s Time] [2021-12-06 20:23:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-06 20:23:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2021-12-06 20:23:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 122 states have (on average 1.1229508196721312) internal successors, (137), 122 states have internal predecessors, (137), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 20:23:01,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2021-12-06 20:23:01,286 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 72 [2021-12-06 20:23:01,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:01,287 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2021-12-06 20:23:01,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 1.435897435897436) internal successors, (56), 35 states have internal predecessors, (56), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 20:23:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2021-12-06 20:23:01,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 20:23:01,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:01,287 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:23:01,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 20:23:01,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:23:01,488 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:23:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:01,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1577996380, now seen corresponding path program 1 times [2021-12-06 20:23:01,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:01,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526004270] [2021-12-06 20:23:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:01,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:01,518 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:23:01,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850714583] [2021-12-06 20:23:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:01,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:23:01,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:23:01,522 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:23:01,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 20:23:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:02,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-06 20:23:02,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:23:02,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:23:02,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:23:02,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:23:02,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2021-12-06 20:23:02,996 INFO L354 Elim1Store]: treesize reduction 116, result has 18.9 percent of original size [2021-12-06 20:23:02,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 63 treesize of output 83 [2021-12-06 20:23:03,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 30 treesize of output 7 [2021-12-06 20:23:03,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 86 [2021-12-06 20:23:03,162 INFO L354 Elim1Store]: treesize reduction 307, result has 17.0 percent of original size [2021-12-06 20:23:03,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 85 treesize of output 126 [2021-12-06 20:23:03,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 110 treesize of output 45 [2021-12-06 20:23:03,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 20:23:03,350 INFO L354 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2021-12-06 20:23:03,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 103 [2021-12-06 20:23:03,357 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:23:03,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:03,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 33 [2021-12-06 20:23:24,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 90 [2021-12-06 20:23:24,208 INFO L354 Elim1Store]: treesize reduction 342, result has 38.7 percent of original size [2021-12-06 20:23:24,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 89 treesize of output 285 [2021-12-06 20:23:25,511 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:23:25,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:25,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:25,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:25,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:25,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:25,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:23:25,594 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:23:25,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 194 [2021-12-06 20:23:58,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 217 treesize of output 198 [2021-12-06 20:23:59,278 INFO L354 Elim1Store]: treesize reduction 808, result has 21.8 percent of original size [2021-12-06 20:23:59,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 case distinctions, treesize of input 197 treesize of output 363 [2021-12-06 20:24:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,572 INFO L354 Elim1Store]: treesize reduction 322, result has 0.3 percent of original size [2021-12-06 20:24:04,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 180 treesize of output 66 [2021-12-06 20:24:04,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:04,660 INFO L354 Elim1Store]: treesize reduction 338, result has 16.1 percent of original size [2021-12-06 20:24:04,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 191 treesize of output 137 [2021-12-06 20:24:05,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,378 INFO L354 Elim1Store]: treesize reduction 326, result has 0.3 percent of original size [2021-12-06 20:24:05,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 184 treesize of output 68 [2021-12-06 20:24:05,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:05,675 INFO L354 Elim1Store]: treesize reduction 67, result has 1.5 percent of original size [2021-12-06 20:24:05,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 170 treesize of output 61 [2021-12-06 20:24:07,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:07,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:07,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:07,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:24:07,041 INFO L354 Elim1Store]: treesize reduction 381, result has 0.3 percent of original size [2021-12-06 20:24:07,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 160 treesize of output 60 [2021-12-06 20:24:48,201 INFO L354 Elim1Store]: treesize reduction 180, result has 37.1 percent of original size [2021-12-06 20:24:48,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 199 treesize of output 216 [2021-12-06 20:24:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 56 refuted. 20 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:24:48,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:24:55,337 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~ARR_SIZE~0 4294967296))) (and (or (<= .cse0 2147483647) (forall ((|ULTIMATE.start_main_~index1~0#1| Int) (|ULTIMATE.start_main_~index2~0#1| Int)) (<= (let ((.cse2 (* (mod c_~ARR_SIZE~0 4294967296) 4))) (let ((.cse1 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index2~0#1| 4) (* |ULTIMATE.start_main_~index1~0#1| (+ (- 17179869184) .cse2))) |c_ULTIMATE.start_main_#t~ite10#1|))) (+ 2 (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869180))) (select .cse1 (+ (- 17179869184) .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset|)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (select .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|)))) (* 2 c_~ARR_SIZE~0)))) (or (< 2147483647 .cse0) (forall ((|ULTIMATE.start_main_~index1~0#1| Int) (|ULTIMATE.start_main_~index2~0#1| Int)) (<= (let ((.cse4 (* (mod c_~ARR_SIZE~0 4294967296) 4))) (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index1~0#1| .cse4) (* |ULTIMATE.start_main_~index2~0#1| 4)) |c_ULTIMATE.start_main_#t~ite10#1|))) (+ (select .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse3 (+ .cse4 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 2 (select .cse3 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse3 (+ .cse4 |c_ULTIMATE.start_main_~#array~0#1.offset|))))) (* 2 c_~ARR_SIZE~0)))))) is different from false [2021-12-06 20:24:57,363 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~ARR_SIZE~0 4294967296))) (and (or (<= .cse0 2147483647) (forall ((|ULTIMATE.start_main_~index1~0#1| Int) (|ULTIMATE.start_main_~index2~0#1| Int)) (<= (let ((.cse2 (* (mod c_~ARR_SIZE~0 4294967296) 4))) (let ((.cse1 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index2~0#1| 4) (* |ULTIMATE.start_main_~index1~0#1| (+ (- 17179869184) .cse2))) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (+ 2 (select .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse1 (+ .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869180))) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (select .cse1 (+ (- 17179869184) .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset|))))) (* 2 c_~ARR_SIZE~0)))) (or (forall ((|ULTIMATE.start_main_~index1~0#1| Int) (|ULTIMATE.start_main_~index2~0#1| Int)) (<= (let ((.cse4 (* (mod c_~ARR_SIZE~0 4294967296) 4))) (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index1~0#1| .cse4) (* |ULTIMATE.start_main_~index2~0#1| 4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) (+ (select .cse3 (+ .cse4 |c_ULTIMATE.start_main_~#array~0#1.offset|)) (select .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse3 (+ .cse4 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) 2 (select .cse3 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1|))) (* 2 c_~ARR_SIZE~0))) (< 2147483647 .cse0)))) is different from false [2021-12-06 20:24:57,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:57,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526004270] [2021-12-06 20:24:57,479 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:24:57,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850714583] [2021-12-06 20:24:57,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850714583] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:24:57,479 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:24:57,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-12-06 20:24:57,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446072670] [2021-12-06 20:24:57,479 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:24:57,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 20:24:57,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 20:24:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1530, Unknown=29, NotChecked=166, Total=1980 [2021-12-06 20:24:57,480 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 20:25:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:00,206 INFO L93 Difference]: Finished difference Result 251 states and 284 transitions. [2021-12-06 20:25:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-06 20:25:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 72 [2021-12-06 20:25:00,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:00,208 INFO L225 Difference]: With dead ends: 251 [2021-12-06 20:25:00,208 INFO L226 Difference]: Without dead ends: 231 [2021-12-06 20:25:00,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 93.9s TimeCoverageRelationStatistics Valid=292, Invalid=1848, Unknown=30, NotChecked=182, Total=2352 [2021-12-06 20:25:00,210 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 49 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:00,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 374 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 229 Invalid, 0 Unknown, 217 Unchecked, 0.3s Time] [2021-12-06 20:25:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-06 20:25:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 192. [2021-12-06 20:25:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 162 states have (on average 1.1296296296296295) internal successors, (183), 162 states have internal predecessors, (183), 17 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 20:25:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 217 transitions. [2021-12-06 20:25:00,229 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 217 transitions. Word has length 72 [2021-12-06 20:25:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:00,229 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 217 transitions. [2021-12-06 20:25:00,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-06 20:25:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 217 transitions. [2021-12-06 20:25:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 20:25:00,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:00,230 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:00,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 20:25:00,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:25:00,431 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2018673184, now seen corresponding path program 2 times [2021-12-06 20:25:00,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:25:00,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91400559] [2021-12-06 20:25:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:00,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:25:00,445 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:25:00,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [754010383] [2021-12-06 20:25:00,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:25:00,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:25:00,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:25:00,447 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:25:00,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 20:25:01,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:25:01,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:25:01,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-06 20:25:01,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:01,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:25:01,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:25:01,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:25:01,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 20:25:01,379 INFO L354 Elim1Store]: treesize reduction 148, result has 19.1 percent of original size [2021-12-06 20:25:01,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 71 treesize of output 95 [2021-12-06 20:25:01,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 48 treesize of output 21 [2021-12-06 20:25:01,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 69 treesize of output 26 [2021-12-06 20:25:01,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 88 [2021-12-06 20:25:01,634 INFO L354 Elim1Store]: treesize reduction 321, result has 17.3 percent of original size [2021-12-06 20:25:01,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 87 treesize of output 130 [2021-12-06 20:25:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 52 treesize of output 10 [2021-12-06 20:25:01,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 20:25:01,874 INFO L354 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2021-12-06 20:25:01,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 103 [2021-12-06 20:25:01,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:01,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2021-12-06 20:25:21,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 116 [2021-12-06 20:25:21,445 INFO L354 Elim1Store]: treesize reduction 572, result has 22.5 percent of original size [2021-12-06 20:25:21,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 case distinctions, treesize of input 115 treesize of output 235 [2021-12-06 20:25:22,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:22,903 INFO L354 Elim1Store]: treesize reduction 246, result has 0.4 percent of original size [2021-12-06 20:25:22,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 132 treesize of output 67 [2021-12-06 20:25:43,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 90 [2021-12-06 20:25:43,414 INFO L354 Elim1Store]: treesize reduction 342, result has 38.7 percent of original size [2021-12-06 20:25:43,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 89 treesize of output 285 [2021-12-06 20:25:44,889 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:25:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 26 [2021-12-06 20:25:44,952 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 20:25:44,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:44,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 26 [2021-12-06 20:25:45,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 26 [2021-12-06 20:25:45,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,076 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:25:45,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 67 treesize of output 52 [2021-12-06 20:25:45,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:25:45,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 26 [2021-12-06 20:26:09,060 INFO L354 Elim1Store]: treesize reduction 180, result has 37.1 percent of original size [2021-12-06 20:26:09,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 199 treesize of output 216 [2021-12-06 20:26:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 20:26:09,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:26:47,021 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_470 Int)) (or (let ((.cse2 (mod c_~ARR_SIZE~0 4294967296))) (and (or (forall ((|ULTIMATE.start_main_~index1~0#1| Int) (|ULTIMATE.start_main_~index2~0#1| Int)) (<= (let ((.cse1 (* (mod c_~ARR_SIZE~0 4294967296) 4))) (let ((.cse0 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index1~0#1| .cse1) (* |ULTIMATE.start_main_~index2~0#1| 4)) v_ArrVal_470))) (+ (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (select .cse0 (+ .cse1 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 2 |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array~0#1.offset|)))) (* 2 c_~ARR_SIZE~0))) (< 2147483647 .cse2)) (or (forall ((|ULTIMATE.start_main_~index1~0#1| Int) (|ULTIMATE.start_main_~index2~0#1| Int)) (<= (let ((.cse4 (* (mod c_~ARR_SIZE~0 4294967296) 4))) (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* |ULTIMATE.start_main_~index2~0#1| 4) (* |ULTIMATE.start_main_~index1~0#1| (+ (- 17179869184) .cse4))) v_ArrVal_470))) (+ (select .cse3 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse3 (+ .cse4 |c_ULTIMATE.start_main_~#array~0#1.offset| (- 17179869180))) (select .cse3 (+ (- 17179869184) .cse4 |c_ULTIMATE.start_main_~#array~0#1.offset|)) 2 (select .cse3 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1|))) (* 2 c_~ARR_SIZE~0))) (<= .cse2 2147483647)))) (< (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) v_ArrVal_470))) is different from false [2021-12-06 20:26:47,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:26:47,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91400559] [2021-12-06 20:26:47,684 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:26:47,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754010383] [2021-12-06 20:26:47,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754010383] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:26:47,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:26:47,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-06 20:26:47,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464317790] [2021-12-06 20:26:47,685 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:26:47,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 20:26:47,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:26:47,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 20:26:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1408, Unknown=30, NotChecked=78, Total=1722 [2021-12-06 20:26:47,686 INFO L87 Difference]: Start difference. First operand 192 states and 217 transitions. Second operand has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:26:50,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:50,860 INFO L93 Difference]: Finished difference Result 217 states and 243 transitions. [2021-12-06 20:26:50,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:26:50,860 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2021-12-06 20:26:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:50,861 INFO L225 Difference]: With dead ends: 217 [2021-12-06 20:26:50,861 INFO L226 Difference]: Without dead ends: 197 [2021-12-06 20:26:50,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 47 SyntacticMatches, 9 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 97.7s TimeCoverageRelationStatistics Valid=240, Invalid=1625, Unknown=31, NotChecked=84, Total=1980 [2021-12-06 20:26:50,862 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:50,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 358 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 281 Invalid, 0 Unknown, 337 Unchecked, 0.5s Time] [2021-12-06 20:26:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-06 20:26:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 192. [2021-12-06 20:26:50,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 162 states have (on average 1.1296296296296295) internal successors, (183), 162 states have internal predecessors, (183), 17 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 20:26:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 217 transitions. [2021-12-06 20:26:50,882 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 217 transitions. Word has length 72 [2021-12-06 20:26:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:50,882 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 217 transitions. [2021-12-06 20:26:50,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:26:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 217 transitions. [2021-12-06 20:26:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 20:26:50,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:50,883 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:50,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 20:26:51,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 20:26:51,084 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1554501559, now seen corresponding path program 10 times [2021-12-06 20:26:51,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:26:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501767608] [2021-12-06 20:26:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:51,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:26:51,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:26:51,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613433802] [2021-12-06 20:26:51,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 20:26:51,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:26:51,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:26:51,117 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:26:51,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 20:26:51,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 20:26:51,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:26:51,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:26:51,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 92 proven. 29 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 20:26:51,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:26:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 84 proven. 29 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-12-06 20:26:51,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:26:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501767608] [2021-12-06 20:26:51,488 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:26:51,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613433802] [2021-12-06 20:26:51,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613433802] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:26:51,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:26:51,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-06 20:26:51,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530588496] [2021-12-06 20:26:51,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:26:51,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:26:51,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:26:51,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:26:51,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:26:51,489 INFO L87 Difference]: Start difference. First operand 192 states and 217 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:26:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:51,718 INFO L93 Difference]: Finished difference Result 256 states and 288 transitions. [2021-12-06 20:26:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:26:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2021-12-06 20:26:51,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:51,720 INFO L225 Difference]: With dead ends: 256 [2021-12-06 20:26:51,720 INFO L226 Difference]: Without dead ends: 188 [2021-12-06 20:26:51,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:26:51,721 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 113 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:51,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 108 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:26:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-12-06 20:26:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2021-12-06 20:26:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 145 states have (on average 1.1172413793103448) internal successors, (162), 145 states have internal predecessors, (162), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-06 20:26:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 188 transitions. [2021-12-06 20:26:51,740 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 188 transitions. Word has length 74 [2021-12-06 20:26:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:51,740 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 188 transitions. [2021-12-06 20:26:51,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 20:26:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 188 transitions. [2021-12-06 20:26:51,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 20:26:51,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:51,741 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:51,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 20:26:51,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 20:26:51,942 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:51,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:51,942 INFO L85 PathProgramCache]: Analyzing trace with hash -52720655, now seen corresponding path program 2 times [2021-12-06 20:26:51,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:26:51,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934357980] [2021-12-06 20:26:51,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:51,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:26:51,950 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:26:51,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018447512] [2021-12-06 20:26:51,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:26:51,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:26:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:26:51,951 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:26:51,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 20:26:52,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:26:52,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:26:52,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 115 conjunts are in the unsatisfiable core [2021-12-06 20:26:52,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:53,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:26:53,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:26:53,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:26:53,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 72 [2021-12-06 20:26:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:26:53,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 93 [2021-12-06 20:26:53,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 34 treesize of output 7 [2021-12-06 20:26:53,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 86 [2021-12-06 20:26:53,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 126 [2021-12-06 20:26:53,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 75 treesize of output 35 [2021-12-06 20:26:53,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-06 20:26:53,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 103 [2021-12-06 20:26:53,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:53,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 23 [2021-12-06 20:26:54,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 98 [2021-12-06 20:26:54,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:54,814 INFO L354 Elim1Store]: treesize reduction 95, result has 43.5 percent of original size [2021-12-06 20:26:54,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 198 [2021-12-06 20:26:55,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:26:55,274 INFO L354 Elim1Store]: treesize reduction 49, result has 50.0 percent of original size [2021-12-06 20:26:55,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 171 treesize of output 159 [2021-12-06 20:27:02,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 148 [2021-12-06 20:27:02,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:02,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:03,282 INFO L354 Elim1Store]: treesize reduction 490, result has 16.7 percent of original size [2021-12-06 20:27:03,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 259 [2021-12-06 20:27:05,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:05,564 INFO L354 Elim1Store]: treesize reduction 139, result has 35.9 percent of original size [2021-12-06 20:27:05,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 289 treesize of output 254 [2021-12-06 20:27:51,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 234 [2021-12-06 20:27:51,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:51,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:52,419 INFO L354 Elim1Store]: treesize reduction 449, result has 20.4 percent of original size [2021-12-06 20:27:52,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 233 treesize of output 351 [2021-12-06 20:27:57,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:57,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:27:58,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 175 treesize of output 158 [2021-12-06 20:27:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,401 INFO L354 Elim1Store]: treesize reduction 6, result has 78.6 percent of original size [2021-12-06 20:27:58,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 70 treesize of output 44 [2021-12-06 20:27:58,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 78 treesize of output 37 [2021-12-06 20:27:58,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:27:58,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 101 treesize of output 60 [2021-12-06 20:29:01,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:29:01,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:29:01,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:01,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:29:01,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:02,036 INFO L354 Elim1Store]: treesize reduction 251, result has 41.5 percent of original size [2021-12-06 20:29:02,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 19 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 438 treesize of output 395 [2021-12-06 20:29:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 24 proven. 119 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:29:15,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:29:38,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:29:38,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934357980] [2021-12-06 20:29:38,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 20:29:38,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018447512] [2021-12-06 20:29:38,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018447512] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:29:38,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:29:38,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2021-12-06 20:29:38,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531182998] [2021-12-06 20:29:38,590 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:29:38,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 20:29:38,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:29:38,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 20:29:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=4513, Unknown=1, NotChecked=0, Total=5112 [2021-12-06 20:29:38,593 INFO L87 Difference]: Start difference. First operand 168 states and 188 transitions. Second operand has 51 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 42 states have internal predecessors, (64), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 20:29:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:29:39,672 INFO L93 Difference]: Finished difference Result 232 states and 258 transitions. [2021-12-06 20:29:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-12-06 20:29:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 42 states have internal predecessors, (64), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 87 [2021-12-06 20:29:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:29:39,674 INFO L225 Difference]: With dead ends: 232 [2021-12-06 20:29:39,674 INFO L226 Difference]: Without dead ends: 212 [2021-12-06 20:29:39,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2970 ImplicationChecksByTransitivity, 32.1s TimeCoverageRelationStatistics Valid=650, Invalid=5049, Unknown=1, NotChecked=0, Total=5700 [2021-12-06 20:29:39,676 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 92 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:29:39,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 283 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 116 Invalid, 0 Unknown, 503 Unchecked, 0.3s Time] [2021-12-06 20:29:39,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-06 20:29:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 187. [2021-12-06 20:29:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 159 states have (on average 1.1132075471698113) internal successors, (177), 160 states have internal predecessors, (177), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 20:29:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 209 transitions. [2021-12-06 20:29:39,699 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 209 transitions. Word has length 87 [2021-12-06 20:29:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:29:39,699 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 209 transitions. [2021-12-06 20:29:39,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 42 states have internal predecessors, (64), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 20:29:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 209 transitions. [2021-12-06 20:29:39,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 20:29:39,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:29:39,700 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:29:39,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-06 20:29:39,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:29:39,901 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:29:39,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:29:39,901 INFO L85 PathProgramCache]: Analyzing trace with hash 166134063, now seen corresponding path program 3 times [2021-12-06 20:29:39,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:29:39,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108918471] [2021-12-06 20:29:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:39,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:29:39,909 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 20:29:39,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975779201] [2021-12-06 20:29:39,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:29:39,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:29:39,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:29:39,910 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:29:39,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fe42cb8-1c17-4c14-9069-c859496300b6/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 20:29:41,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-06 20:29:41,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:29:41,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 123 conjunts are in the unsatisfiable core [2021-12-06 20:29:41,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:29:41,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-06 20:29:41,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 20:29:41,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 20:29:42,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2021-12-06 20:29:42,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 20:29:42,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 85 [2021-12-06 20:29:42,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 40 treesize of output 17 [2021-12-06 20:29:42,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 55 treesize of output 22 [2021-12-06 20:29:42,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-06 20:29:42,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 88 [2021-12-06 20:29:42,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 33 treesize of output 12 [2021-12-06 20:29:42,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 73 [2021-12-06 20:29:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 108 [2021-12-06 20:29:42,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:42,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 41 [2021-12-06 20:29:44,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 98 [2021-12-06 20:29:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,432 INFO L354 Elim1Store]: treesize reduction 95, result has 43.5 percent of original size [2021-12-06 20:29:44,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 198 [2021-12-06 20:29:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:44,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:45,050 INFO L354 Elim1Store]: treesize reduction 49, result has 50.0 percent of original size [2021-12-06 20:29:45,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 176 treesize of output 155 [2021-12-06 20:29:55,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 132 [2021-12-06 20:29:55,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:55,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:56,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:56,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:56,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:56,495 INFO L354 Elim1Store]: treesize reduction 466, result has 17.4 percent of original size [2021-12-06 20:29:56,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 243 [2021-12-06 20:29:57,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:57,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:57,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:57,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 20:29:58,207 INFO L354 Elim1Store]: treesize reduction 115, result has 47.0 percent of original size [2021-12-06 20:29:58,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 265 treesize of output 254