./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer --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 8c753c2343d61d5c6f96a078c56a1e34de0907f4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:06:21,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:06:21,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:06:21,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:06:21,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:06:21,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:06:21,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:06:21,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:06:21,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:06:21,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:06:21,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:06:21,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:06:21,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:06:21,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:06:21,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:06:21,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:06:21,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:06:21,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:06:21,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:06:21,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:06:21,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:06:21,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:06:21,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:06:21,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:06:21,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:06:21,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:06:21,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:06:21,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:06:21,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:06:21,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:06:21,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:06:21,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:06:21,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:06:21,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:06:21,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:06:21,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:06:21,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:06:21,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:06:21,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:06:21,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:06:21,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:06:21,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:06:21,280 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:06:21,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:06:21,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:06:21,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:06:21,282 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:06:21,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:06:21,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:06:21,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:06:21,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:06:21,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:06:21,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:06:21,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:06:21,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:06:21,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:06:21,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:06:21,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:06:21,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:06:21,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:06:21,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:06:21,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:06:21,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:06:21,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:21,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:06:21,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:06:21,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:06:21,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:06:21,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:06:21,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:06:21,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:06:21,288 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-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c753c2343d61d5c6f96a078c56a1e34de0907f4 [2020-11-28 03:06:21,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:06:21,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:06:21,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:06:21,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:06:21,641 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:06:21,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2020-11-28 03:06:21,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/data/201dff26f/8086ace39ecd453e84a1ee15f4bc4e93/FLAG5fe9e89b7 [2020-11-28 03:06:22,204 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:06:22,205 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound100.c [2020-11-28 03:06:22,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/data/201dff26f/8086ace39ecd453e84a1ee15f4bc4e93/FLAG5fe9e89b7 [2020-11-28 03:06:22,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/data/201dff26f/8086ace39ecd453e84a1ee15f4bc4e93 [2020-11-28 03:06:22,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:06:22,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:06:22,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:22,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:06:22,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:06:22,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2468498b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22, skipping insertion in model container [2020-11-28 03:06:22,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:06:22,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:06:22,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:22,860 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:06:22,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:06:22,917 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:06:22,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22 WrapperNode [2020-11-28 03:06:22,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:06:22,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:22,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:06:22,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:06:22,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:06:22,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:06:22,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:06:22,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:06:22,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:22,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:23,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:23,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... [2020-11-28 03:06:23,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:06:23,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:06:23,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:06:23,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:06:23,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:06:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:06:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:06:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:06:23,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:06:23,612 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:06:23,612 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-28 03:06:23,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:23 BoogieIcfgContainer [2020-11-28 03:06:23,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:06:23,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:06:23,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:06:23,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:06:23,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:06:22" (1/3) ... [2020-11-28 03:06:23,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a5d73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:23, skipping insertion in model container [2020-11-28 03:06:23,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:06:22" (2/3) ... [2020-11-28 03:06:23,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a5d73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:06:23, skipping insertion in model container [2020-11-28 03:06:23,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:23" (3/3) ... [2020-11-28 03:06:23,623 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound100.c [2020-11-28 03:06:23,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:06:23,639 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:06:23,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:06:23,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:06:23,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:06:23,683 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:06:23,683 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:06:23,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:06:23,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:06:23,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:06:23,684 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:06:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-28 03:06:23,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:06:23,706 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:23,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:23,707 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:23,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-28 03:06:23,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:23,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895222494] [2020-11-28 03:06:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:23,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895222494] [2020-11-28 03:06:23,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:23,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:06:23,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009027937] [2020-11-28 03:06:23,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:06:23,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:23,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:06:23,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:06:23,923 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-11-28 03:06:23,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:23,947 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-11-28 03:06:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:06:23,949 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 03:06:23,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:23,958 INFO L225 Difference]: With dead ends: 75 [2020-11-28 03:06:23,958 INFO L226 Difference]: Without dead ends: 35 [2020-11-28 03:06:23,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:06:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-28 03:06:23,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-28 03:06:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:06:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-11-28 03:06:23,990 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-11-28 03:06:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:23,990 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-11-28 03:06:23,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:06:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-11-28 03:06:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:06:23,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:23,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:23,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:06:23,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:23,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-28 03:06:23,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:23,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878475155] [2020-11-28 03:06:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:24,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878475155] [2020-11-28 03:06:24,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:24,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:06:24,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680568279] [2020-11-28 03:06:24,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:06:24,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:24,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:06:24,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:06:24,066 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-11-28 03:06:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:24,182 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-11-28 03:06:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:06:24,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:06:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:24,185 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:06:24,185 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:06:24,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:06:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:06:24,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-11-28 03:06:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:06:24,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-28 03:06:24,200 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-11-28 03:06:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:24,200 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-28 03:06:24,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:06:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-28 03:06:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:06:24,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:24,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:24,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:06:24,203 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:24,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:24,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-28 03:06:24,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:24,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017862113] [2020-11-28 03:06:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:24,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017862113] [2020-11-28 03:06:24,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:24,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:06:24,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162838752] [2020-11-28 03:06:24,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:06:24,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:24,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:06:24,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:06:24,291 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-11-28 03:06:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:24,451 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-28 03:06:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:06:24,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:06:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:24,454 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:06:24,454 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:06:24,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:06:24,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:06:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2020-11-28 03:06:24,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:06:24,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-28 03:06:24,461 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-11-28 03:06:24,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:24,463 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-28 03:06:24,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:06:24,464 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-28 03:06:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:06:24,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:24,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:24,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:06:24,466 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:24,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-28 03:06:24,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:24,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839241335] [2020-11-28 03:06:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:24,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:24,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202809392] [2020-11-28 03:06:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:24,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:06:24,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:24,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839241335] [2020-11-28 03:06:24,632 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:24,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202809392] [2020-11-28 03:06:24,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:24,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:06:24,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047561294] [2020-11-28 03:06:24,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:06:24,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:24,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:06:24,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:06:24,634 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-11-28 03:06:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:24,825 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-11-28 03:06:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:06:24,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:06:24,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:24,833 INFO L225 Difference]: With dead ends: 72 [2020-11-28 03:06:24,833 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 03:06:24,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:06:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 03:06:24,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-28 03:06:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:06:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-11-28 03:06:24,843 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-11-28 03:06:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:24,843 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-11-28 03:06:24,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:06:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-11-28 03:06:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:06:24,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:24,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:25,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:25,053 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:25,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash -13373041, now seen corresponding path program 1 times [2020-11-28 03:06:25,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:25,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380565007] [2020-11-28 03:06:25,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:25,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:25,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451943932] [2020-11-28 03:06:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:25,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:06:25,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:25,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380565007] [2020-11-28 03:06:25,174 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:25,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451943932] [2020-11-28 03:06:25,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:25,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:06:25,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69900715] [2020-11-28 03:06:25,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:06:25,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:06:25,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:06:25,182 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2020-11-28 03:06:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:25,298 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-11-28 03:06:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:06:25,301 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:06:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:25,302 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:06:25,302 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:06:25,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:06:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:06:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-11-28 03:06:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-28 03:06:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-11-28 03:06:25,316 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2020-11-28 03:06:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:25,316 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-11-28 03:06:25,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:06:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-11-28 03:06:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:06:25,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:25,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:25,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:25,542 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-28 03:06:25,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:25,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152510475] [2020-11-28 03:06:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:25,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:25,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681820225] [2020-11-28 03:06:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:25,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:06:25,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:25,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152510475] [2020-11-28 03:06:25,680 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:25,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681820225] [2020-11-28 03:06:25,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:25,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:06:25,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51914851] [2020-11-28 03:06:25,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:06:25,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:25,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:06:25,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:06:25,683 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2020-11-28 03:06:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:25,897 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2020-11-28 03:06:25,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:06:25,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:06:25,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:25,906 INFO L225 Difference]: With dead ends: 108 [2020-11-28 03:06:25,906 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:06:25,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:06:25,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-11-28 03:06:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-28 03:06:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-11-28 03:06:25,926 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 18 [2020-11-28 03:06:25,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:25,927 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-11-28 03:06:25,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:06:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-11-28 03:06:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:06:25,928 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:25,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:26,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:26,137 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:26,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:26,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-11-28 03:06:26,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:26,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252737596] [2020-11-28 03:06:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:26,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:26,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966594227] [2020-11-28 03:06:26,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:26,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:06:26,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:26,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:06:26,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:26,285 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:26,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252737596] [2020-11-28 03:06:26,285 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:26,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966594227] [2020-11-28 03:06:26,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:26,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:06:26,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28298408] [2020-11-28 03:06:26,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:26,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:26,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:26,287 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-11-28 03:06:26,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:26,561 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2020-11-28 03:06:26,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:26,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-28 03:06:26,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:26,562 INFO L225 Difference]: With dead ends: 142 [2020-11-28 03:06:26,563 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:06:26,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:06:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2020-11-28 03:06:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:06:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-11-28 03:06:26,576 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 25 [2020-11-28 03:06:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:26,576 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-11-28 03:06:26,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-11-28 03:06:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-28 03:06:26,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:26,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:26,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:26,790 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:26,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:26,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1085203663, now seen corresponding path program 1 times [2020-11-28 03:06:26,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:26,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789954893] [2020-11-28 03:06:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:26,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:26,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145129986] [2020-11-28 03:06:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:26,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-28 03:06:26,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:26,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:26,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789954893] [2020-11-28 03:06:26,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:26,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145129986] [2020-11-28 03:06:26,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:26,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:06:26,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245700142] [2020-11-28 03:06:26,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:26,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:26,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:26,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:26,958 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 6 states. [2020-11-28 03:06:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:27,155 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2020-11-28 03:06:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:06:27,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-28 03:06:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:27,156 INFO L225 Difference]: With dead ends: 102 [2020-11-28 03:06:27,157 INFO L226 Difference]: Without dead ends: 100 [2020-11-28 03:06:27,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-28 03:06:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2020-11-28 03:06:27,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 03:06:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2020-11-28 03:06:27,168 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 27 [2020-11-28 03:06:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:27,168 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2020-11-28 03:06:27,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2020-11-28 03:06:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:06:27,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:27,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:27,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:27,390 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:27,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1129109896, now seen corresponding path program 1 times [2020-11-28 03:06:27,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:27,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931105514] [2020-11-28 03:06:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:27,401 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:27,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800685589] [2020-11-28 03:06:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:27,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-28 03:06:27,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:27,555 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:06:27,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:27,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931105514] [2020-11-28 03:06:27,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:27,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800685589] [2020-11-28 03:06:27,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:27,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:06:27,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389353314] [2020-11-28 03:06:27,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:06:27,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:27,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:06:27,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:27,661 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 9 states. [2020-11-28 03:06:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:28,052 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-11-28 03:06:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:28,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-11-28 03:06:28,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:28,054 INFO L225 Difference]: With dead ends: 100 [2020-11-28 03:06:28,054 INFO L226 Difference]: Without dead ends: 85 [2020-11-28 03:06:28,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:06:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-28 03:06:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-28 03:06:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:06:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-11-28 03:06:28,064 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2020-11-28 03:06:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:28,065 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-11-28 03:06:28,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:06:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-11-28 03:06:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 03:06:28,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:28,066 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:28,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:28,282 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:28,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1575226400, now seen corresponding path program 3 times [2020-11-28 03:06:28,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:28,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350221711] [2020-11-28 03:06:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:28,297 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:28,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483758389] [2020-11-28 03:06:28,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:28,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 03:06:28,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:28,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:06:28,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:28,384 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:06:28,384 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-28 03:06:28,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350221711] [2020-11-28 03:06:28,498 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:28,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483758389] [2020-11-28 03:06:28,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:28,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:06:28,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915171832] [2020-11-28 03:06:28,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:28,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:28,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:28,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:28,500 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 7 states. [2020-11-28 03:06:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:28,778 INFO L93 Difference]: Finished difference Result 96 states and 107 transitions. [2020-11-28 03:06:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:28,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-28 03:06:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:28,779 INFO L225 Difference]: With dead ends: 96 [2020-11-28 03:06:28,780 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:06:28,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:06:28,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-28 03:06:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 03:06:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-11-28 03:06:28,799 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 32 [2020-11-28 03:06:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:28,799 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-11-28 03:06:28,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-11-28 03:06:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:06:28,802 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:28,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:29,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:06:29,026 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:29,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1042348646, now seen corresponding path program 2 times [2020-11-28 03:06:29,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:29,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923109989] [2020-11-28 03:06:29,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:29,043 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:29,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225763816] [2020-11-28 03:06:29,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:29,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:06:29,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:29,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 03:06:29,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:29,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923109989] [2020-11-28 03:06:29,236 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:29,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225763816] [2020-11-28 03:06:29,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:29,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:06:29,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974225539] [2020-11-28 03:06:29,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:06:29,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:29,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:06:29,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:29,238 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 7 states. [2020-11-28 03:06:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:29,625 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-11-28 03:06:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:06:29,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-28 03:06:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:29,626 INFO L225 Difference]: With dead ends: 99 [2020-11-28 03:06:29,626 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:06:29,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:06:29,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2020-11-28 03:06:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 03:06:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-11-28 03:06:29,638 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 34 [2020-11-28 03:06:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:29,639 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-11-28 03:06:29,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:06:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-11-28 03:06:29,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:06:29,640 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:29,640 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:29,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-11-28 03:06:29,861 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:29,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1894983429, now seen corresponding path program 3 times [2020-11-28 03:06:29,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:29,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513635214] [2020-11-28 03:06:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:29,871 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:29,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879465048] [2020-11-28 03:06:29,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:29,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:06:29,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:29,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-28 03:06:29,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:30,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:06:30,123 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 03:06:30,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 03:06:30,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:06:30,615 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,623 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,630 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,638 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,651 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:30,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513635214] [2020-11-28 03:06:30,741 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:30,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879465048] [2020-11-28 03:06:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:30,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-28 03:06:30,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026045510] [2020-11-28 03:06:30,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:06:30,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:06:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:06:30,743 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 11 states. [2020-11-28 03:06:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:31,423 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-11-28 03:06:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:06:31,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-11-28 03:06:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:31,425 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:06:31,425 INFO L226 Difference]: Without dead ends: 105 [2020-11-28 03:06:31,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:06:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-28 03:06:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-11-28 03:06:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-28 03:06:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2020-11-28 03:06:31,440 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 40 [2020-11-28 03:06:31,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:31,440 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2020-11-28 03:06:31,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:06:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2020-11-28 03:06:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:06:31,446 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:31,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:31,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:31,662 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:31,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:31,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1501956419, now seen corresponding path program 1 times [2020-11-28 03:06:31,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:31,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289746693] [2020-11-28 03:06:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:31,668 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:31,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94444001] [2020-11-28 03:06:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:06:31,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:06:31,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:06:31,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289746693] [2020-11-28 03:06:31,825 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:31,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94444001] [2020-11-28 03:06:31,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:06:31,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:06:31,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648560480] [2020-11-28 03:06:31,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:06:31,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:31,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:06:31,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:06:31,828 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand 6 states. [2020-11-28 03:06:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:32,021 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2020-11-28 03:06:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:32,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-11-28 03:06:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:32,022 INFO L225 Difference]: With dead ends: 141 [2020-11-28 03:06:32,022 INFO L226 Difference]: Without dead ends: 104 [2020-11-28 03:06:32,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:06:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-28 03:06:32,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 73. [2020-11-28 03:06:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:06:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-11-28 03:06:32,036 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 40 [2020-11-28 03:06:32,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:32,037 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-11-28 03:06:32,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:06:32,038 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-11-28 03:06:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 03:06:32,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:32,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:32,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:32,256 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:32,256 INFO L82 PathProgramCache]: Analyzing trace with hash 265910895, now seen corresponding path program 4 times [2020-11-28 03:06:32,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:32,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089232192] [2020-11-28 03:06:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:32,264 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:32,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932482461] [2020-11-28 03:06:32,264 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:32,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:06:32,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:32,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 33 conjunts are in the unsatisfiable core [2020-11-28 03:06:32,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:32,539 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:06:32,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089232192] [2020-11-28 03:06:32,540 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:32,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932482461] [2020-11-28 03:06:32,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:32,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:06:32,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11684793] [2020-11-28 03:06:32,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:06:32,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:32,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:06:32,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:06:32,542 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 8 states. [2020-11-28 03:06:33,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:33,000 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2020-11-28 03:06:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:06:33,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-11-28 03:06:33,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:33,003 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:06:33,003 INFO L226 Difference]: Without dead ends: 102 [2020-11-28 03:06:33,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:06:33,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-28 03:06:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2020-11-28 03:06:33,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 03:06:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2020-11-28 03:06:33,021 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 41 [2020-11-28 03:06:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:33,021 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2020-11-28 03:06:33,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:06:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2020-11-28 03:06:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:06:33,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:06:33,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:06:33,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:06:33,244 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:06:33,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:06:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash 317576706, now seen corresponding path program 2 times [2020-11-28 03:06:33,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:06:33,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094757995] [2020-11-28 03:06:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:06:33,252 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:06:33,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558175019] [2020-11-28 03:06:33,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:06:33,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 03:06:33,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:06:33,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:06:33,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:06:33,339 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:06:33,339 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:33,387 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:06:33,387 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:06:33,433 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-11-28 03:06:33,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094757995] [2020-11-28 03:06:33,434 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:06:33,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558175019] [2020-11-28 03:06:33,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:06:33,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:06:33,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617584270] [2020-11-28 03:06:33,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:06:33,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:06:33,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:06:33,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:06:33,435 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 9 states. [2020-11-28 03:06:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:06:33,776 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-11-28 03:06:33,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:06:33,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-11-28 03:06:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:06:33,777 INFO L225 Difference]: With dead ends: 92 [2020-11-28 03:06:33,777 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:06:33,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:06:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:06:33,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:06:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:06:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:06:33,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-11-28 03:06:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:06:33,778 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:06:33,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:06:33,778 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:06:33,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:06:33,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:06:33,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:06:34,356 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-11-28 03:06:34,536 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2020-11-28 03:06:34,785 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 28 [2020-11-28 03:06:34,933 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-11-28 03:06:35,154 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 28 [2020-11-28 03:06:35,287 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-11-28 03:06:35,306 INFO L277 CegarLoopResult]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~B~0 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and .cse0 (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) .cse1 .cse2 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse4 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L270 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~B~0 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse3 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and .cse0 (= ULTIMATE.start_main_~d~0 (* (* (div (* ULTIMATE.start_main_~p~0 (- 1)) (- 2)) ULTIMATE.start_main_~B~0) 2)) .cse1 .cse2 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse3 2)) .cse4 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse4 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse2 .cse4 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-28 03:06:35,307 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,307 INFO L270 CegarLoopResult]: At program point L15-5(line 38) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~B~0 1)) (.cse1 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (let ((.cse4 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and .cse0 .cse1 .cse2 .cse3 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) (<= 1 (div .cse4 2)) .cse5 (<= .cse4 ULTIMATE.start_main_~r~0))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 2) .cse3 .cse5) (and .cse1 .cse2 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) .cse3 .cse5 (= ULTIMATE.start_main_~d~0 1)))) [2020-11-28 03:06:35,308 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,308 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~B~0 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse3 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3) (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))))) [2020-11-28 03:06:35,308 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,308 INFO L270 CegarLoopResult]: At program point L15-9(line 48) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~q~0 0)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse0 (= ULTIMATE.start_main_~B~0 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 2) .cse2 .cse3 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3) (and .cse0 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))))) [2020-11-28 03:06:35,308 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,308 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1)) [2020-11-28 03:06:35,308 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-28 03:06:35,308 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-28 03:06:35,308 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:06:35,309 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~B~0 1)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (= ULTIMATE.start_main_~p~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~d~0 1)) (and .cse2 .cse3 (= ULTIMATE.start_main_~p~0 2) .cse0 .cse1 (= (* ULTIMATE.start_main_~B~0 2) ULTIMATE.start_main_~d~0)) (let ((.cse4 (div (* ULTIMATE.start_main_~d~0 (- 1)) (- 2)))) (and .cse2 (= ULTIMATE.start_main_~d~0 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~B~0)) .cse3 (= (mod ULTIMATE.start_main_~p~0 (- 2)) 0) .cse0 (<= 1 (div .cse4 2)) .cse1 (<= .cse4 ULTIMATE.start_main_~r~0))))) [2020-11-28 03:06:35,309 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-28 03:06:35,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:06:35 BoogieIcfgContainer [2020-11-28 03:06:35,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:06:35,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:06:35,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:06:35,338 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:06:35,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:06:23" (3/4) ... [2020-11-28 03:06:35,341 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:06:35,350 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 03:06:35,350 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:06:35,350 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:06:35,351 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:06:35,401 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ee587127-62c9-4209-8431-3cb3c9b775ac/bin/uautomizer/witness.graphml [2020-11-28 03:06:35,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:06:35,402 INFO L168 Benchmark]: Toolchain (without parser) took 12833.23 ms. Allocated memory was 77.6 MB in the beginning and 144.7 MB in the end (delta: 67.1 MB). Free memory was 46.1 MB in the beginning and 40.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 71.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,403 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 58.5 MB in the beginning and 58.5 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:35,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.06 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 45.8 MB in the beginning and 74.3 MB in the end (delta: -28.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.77 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,404 INFO L168 Benchmark]: Boogie Preprocessor took 34.89 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 71.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:06:35,404 INFO L168 Benchmark]: RCFGBuilder took 607.82 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 55.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,405 INFO L168 Benchmark]: TraceAbstraction took 11719.07 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 55.5 MB in the beginning and 44.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,414 INFO L168 Benchmark]: Witness Printer took 63.90 ms. Allocated memory is still 144.7 MB. Free memory was 44.0 MB in the beginning and 40.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:06:35,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 77.6 MB. Free memory was 58.5 MB in the beginning and 58.5 MB in the end (delta: 25.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.06 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 45.8 MB in the beginning and 74.3 MB in the end (delta: -28.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.77 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.89 ms. Allocated memory is still 98.6 MB. Free memory was 72.6 MB in the beginning and 71.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 607.82 ms. Allocated memory is still 98.6 MB. Free memory was 71.3 MB in the beginning and 55.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11719.07 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 55.5 MB in the beginning and 44.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. * Witness Printer took 63.90 ms. Allocated memory is still 144.7 MB. Free memory was 44.0 MB in the beginning and 40.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * B) && 1 == cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || (((((B == 1 && d == p * B) && 1 == cond) && p == 2) && q == 0) && A == r)) || (((((d == p * B && 1 == cond) && B == d) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((B == d && p == 1) && q == 0) && A == r) && d == 1) || (((((B == 1 && 1 == cond) && p == 2) && q == 0) && A == r) && B * 2 == d)) || (((((((B == 1 && d == p * B) && 1 == cond) && p % -2 == 0) && q == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: ((((((B == 1 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((B == 1 && 1 <= cond) && B == d) && p == 1) && q == 0) && A == r)) || (((B == 1 && d == p * B) && 1 == cond) && A == q + r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * -1 / -2 * B * 2) && 1 <= cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || (((((B == 1 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d)) || (((((1 <= cond && B == d) && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((B == 1 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d) || (((((B == 1 && 1 <= cond) && B == d) && p == 1) && q == 0) && A == r)) || (((B == 1 && d == p * B) && 1 == cond) && A == q + r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((B == 1 && d == p * -1 / -2 * B * 2) && 1 <= cond) && q == 0) && p % -2 == 0) && 1 <= d * -1 / -2 / 2) && A == r) && d * -1 / -2 <= r) || (((((B == 1 && 1 <= cond) && p == 2) && q == 0) && A == r) && B * 2 == d)) || (((((1 <= cond && B == d) && p == 1) && q == 0) && A == r) && d == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && !(0 == cond)) && B == d) && p == 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2s, OverallIterations: 15, TraceHistogramMax: 4, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 465 SDslu, 779 SDs, 0 SdLazy, 1749 SolverSat, 273 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 291 SyntacticMatches, 4 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 148 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 54 NumberOfFragments, 463 HoareAnnotationTreeSize, 9 FomulaSimplifications, 9182 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1094 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 382 NumberOfCodeBlocks, 340 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 367 ConstructedInterpolants, 2 QuantifiedInterpolants, 128113 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1295 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 100/251 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...