./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.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_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 d66b6d836c479d7c0f327f787d838669567676b3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:51:50,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:51:50,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:51:50,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:51:50,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:51:50,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:51:50,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:51:50,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:51:50,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:51:50,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:51:50,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:51:50,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:51:50,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:51:50,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:51:50,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:51:50,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:51:50,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:51:50,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:51:50,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:51:50,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:51:50,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:51:50,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:51:50,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:51:50,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:51:50,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:51:50,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:51:50,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:51:50,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:51:50,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:51:50,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:51:50,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:51:50,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:51:50,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:51:50,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:51:50,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:51:50,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:51:50,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:51:50,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:51:50,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:51:50,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:51:50,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:51:50,270 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:51:50,310 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:51:50,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:51:50,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:51:50,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:51:50,321 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:51:50,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:51:50,322 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:51:50,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:51:50,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:51:50,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:51:50,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:51:50,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:51:50,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:51:50,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:51:50,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:51:50,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:51:50,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:51:50,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:51:50,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:51:50,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:51:50,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:51:50,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:51:50,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:51:50,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:51:50,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:51:50,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:51:50,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:51:50,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:51:50,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:51:50,328 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_ef438723-1adc-465a-990d-d8b72f3947ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d66b6d836c479d7c0f327f787d838669567676b3 [2020-11-29 19:51:50,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:51:50,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:51:50,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:51:50,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:51:50,618 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:51:50,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2020-11-29 19:51:50,687 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/data/528aa92fb/78f296ac782b410faa8a7bff8671e1a2/FLAG5c0be1f7c [2020-11-29 19:51:51,122 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:51:51,124 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound5.c [2020-11-29 19:51:51,139 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/data/528aa92fb/78f296ac782b410faa8a7bff8671e1a2/FLAG5c0be1f7c [2020-11-29 19:51:51,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/data/528aa92fb/78f296ac782b410faa8a7bff8671e1a2 [2020-11-29 19:51:51,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:51:51,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:51:51,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:51:51,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:51:51,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:51:51,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6060ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51, skipping insertion in model container [2020-11-29 19:51:51,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:51:51,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:51:51,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:51:51,745 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:51:51,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:51:51,778 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:51:51,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51 WrapperNode [2020-11-29 19:51:51,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:51:51,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:51:51,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:51:51,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:51:51,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:51:51,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:51:51,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:51:51,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:51:51,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... [2020-11-29 19:51:51,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:51:51,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:51:51,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:51:51,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:51:51,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:51:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:51:51,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:51:51,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:51:52,361 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:51:52,362 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-29 19:51:52,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:51:52 BoogieIcfgContainer [2020-11-29 19:51:52,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:51:52,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:51:52,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:51:52,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:51:52,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:51:51" (1/3) ... [2020-11-29 19:51:52,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5a7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:51:52, skipping insertion in model container [2020-11-29 19:51:52,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:51" (2/3) ... [2020-11-29 19:51:52,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c5a7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:51:52, skipping insertion in model container [2020-11-29 19:51:52,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:51:52" (3/3) ... [2020-11-29 19:51:52,374 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound5.c [2020-11-29 19:51:52,387 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:51:52,392 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 19:51:52,423 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 19:51:52,462 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:51:52,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:51:52,463 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:51:52,463 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:51:52,463 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:51:52,463 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:51:52,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:51:52,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:51:52,481 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-29 19:51:52,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:51:52,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:52,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:51:52,489 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]=== [2020-11-29 19:51:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:52,496 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 19:51:52,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:52,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979549362] [2020-11-29 19:51:52,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:52,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979549362] [2020-11-29 19:51:52,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:51:52,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:51:52,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312102544] [2020-11-29 19:51:52,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:51:52,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:52,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:51:52,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:51:52,787 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-11-29 19:51:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:52,952 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-11-29 19:51:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:51:52,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-29 19:51:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:52,965 INFO L225 Difference]: With dead ends: 102 [2020-11-29 19:51:52,966 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 19:51:52,969 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 [2020-11-29 19:51:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 19:51:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-11-29 19:51:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 19:51:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-29 19:51:53,012 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-11-29 19:51:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:53,012 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-29 19:51:53,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:51:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-29 19:51:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:51:53,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:53,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:53,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:51:53,014 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]=== [2020-11-29 19:51:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash 179013485, now seen corresponding path program 1 times [2020-11-29 19:51:53,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:53,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396744600] [2020-11-29 19:51:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:53,033 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:53,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925325006] [2020-11-29 19:51:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:53,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:51:53,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:53,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396744600] [2020-11-29 19:51:53,175 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:53,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925325006] [2020-11-29 19:51:53,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:51:53,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:51:53,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020573436] [2020-11-29 19:51:53,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:51:53,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:53,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:51:53,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:51:53,178 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-29 19:51:53,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:53,202 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-11-29 19:51:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:51:53,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:51:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:53,206 INFO L225 Difference]: With dead ends: 54 [2020-11-29 19:51:53,207 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 19:51:53,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:51:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 19:51:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 19:51:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:51:53,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 19:51:53,224 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-29 19:51:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:53,225 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 19:51:53,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:51:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 19:51:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:51:53,226 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:53,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:53,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:51:53,456 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]=== [2020-11-29 19:51:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:53,457 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 19:51:53,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:53,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698434814] [2020-11-29 19:51:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:53,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698434814] [2020-11-29 19:51:53,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:51:53,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:51:53,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544418364] [2020-11-29 19:51:53,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:51:53,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:53,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:51:53,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:51:53,583 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-29 19:51:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:53,767 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-11-29 19:51:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:51:53,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:51:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:53,769 INFO L225 Difference]: With dead ends: 54 [2020-11-29 19:51:53,770 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 19:51:53,770 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 [2020-11-29 19:51:53,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 19:51:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-11-29 19:51:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 19:51:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-11-29 19:51:53,785 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-11-29 19:51:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:53,785 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-11-29 19:51:53,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:51:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-11-29 19:51:53,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:51:53,786 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:53,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:53,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:51:53,789 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]=== [2020-11-29 19:51:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:53,790 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 19:51:53,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:53,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94058192] [2020-11-29 19:51:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:53,821 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:53,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491600176] [2020-11-29 19:51:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:53,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:51:53,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:53,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94058192] [2020-11-29 19:51:53,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:53,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491600176] [2020-11-29 19:51:53,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:51:53,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:51:53,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329301472] [2020-11-29 19:51:53,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:51:53,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:53,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:51:53,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:51:53,907 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-11-29 19:51:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:54,077 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-11-29 19:51:54,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:51:54,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:51:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:54,081 INFO L225 Difference]: With dead ends: 79 [2020-11-29 19:51:54,081 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 19:51:54,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:51:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 19:51:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-11-29 19:51:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 19:51:54,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-11-29 19:51:54,097 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-11-29 19:51:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:54,097 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-11-29 19:51:54,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:51:54,098 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-11-29 19:51:54,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:51:54,099 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:54,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:54,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:54,316 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]=== [2020-11-29 19:51:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:54,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2079564058, now seen corresponding path program 1 times [2020-11-29 19:51:54,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:54,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911828864] [2020-11-29 19:51:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:54,328 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:54,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891546124] [2020-11-29 19:51:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:54,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:51:54,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:54,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911828864] [2020-11-29 19:51:54,424 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:54,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891546124] [2020-11-29 19:51:54,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:51:54,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:51:54,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087134085] [2020-11-29 19:51:54,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:51:54,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:54,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:51:54,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:51:54,426 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 4 states. [2020-11-29 19:51:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:54,525 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-11-29 19:51:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:51:54,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 19:51:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:54,527 INFO L225 Difference]: With dead ends: 66 [2020-11-29 19:51:54,527 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 19:51:54,528 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 [2020-11-29 19:51:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 19:51:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-11-29 19:51:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 19:51:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-11-29 19:51:54,538 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-11-29 19:51:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:54,538 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-11-29 19:51:54,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:51:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-11-29 19:51:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:51:54,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:54,539 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:54,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:54,764 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]=== [2020-11-29 19:51:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:54,764 INFO L82 PathProgramCache]: Analyzing trace with hash 18473186, now seen corresponding path program 1 times [2020-11-29 19:51:54,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:54,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766130991] [2020-11-29 19:51:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:54,775 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:54,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838299246] [2020-11-29 19:51:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:54,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:51:54,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:54,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766130991] [2020-11-29 19:51:54,871 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:54,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838299246] [2020-11-29 19:51:54,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:54,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:51:54,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854966871] [2020-11-29 19:51:54,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:51:54,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:54,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:51:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:51:54,873 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-11-29 19:51:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:54,906 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-11-29 19:51:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:51:54,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 19:51:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:54,907 INFO L225 Difference]: With dead ends: 78 [2020-11-29 19:51:54,908 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 19:51:54,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:54,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 19:51:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-29 19:51:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 19:51:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-11-29 19:51:54,915 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-11-29 19:51:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:54,916 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-11-29 19:51:54,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:51:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-11-29 19:51:54,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:51:54,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:54,917 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:55,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:55,148 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]=== [2020-11-29 19:51:55,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-11-29 19:51:55,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:55,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474033107] [2020-11-29 19:51:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:55,158 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:55,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699686317] [2020-11-29 19:51:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:55,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:51:55,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:55,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474033107] [2020-11-29 19:51:55,251 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:55,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699686317] [2020-11-29 19:51:55,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:55,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:51:55,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138666523] [2020-11-29 19:51:55,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:51:55,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:55,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:51:55,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:51:55,253 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 5 states. [2020-11-29 19:51:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:55,425 INFO L93 Difference]: Finished difference Result 126 states and 152 transitions. [2020-11-29 19:51:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:51:55,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 19:51:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:55,427 INFO L225 Difference]: With dead ends: 126 [2020-11-29 19:51:55,427 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 19:51:55,428 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 [2020-11-29 19:51:55,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 19:51:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-11-29 19:51:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 19:51:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2020-11-29 19:51:55,443 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2020-11-29 19:51:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:55,443 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2020-11-29 19:51:55,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:51:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2020-11-29 19:51:55,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:51:55,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:55,445 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:55,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 19:51:55,660 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]=== [2020-11-29 19:51:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:55,660 INFO L82 PathProgramCache]: Analyzing trace with hash 293037475, now seen corresponding path program 1 times [2020-11-29 19:51:55,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:55,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005901337] [2020-11-29 19:51:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:55,670 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:55,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402412250] [2020-11-29 19:51:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:55,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:51:55,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:55,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005901337] [2020-11-29 19:51:55,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:55,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402412250] [2020-11-29 19:51:55,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:55,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:51:55,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893375626] [2020-11-29 19:51:55,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:51:55,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:55,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:51:55,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:55,782 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand 6 states. [2020-11-29 19:51:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:55,826 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-11-29 19:51:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:51:55,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-29 19:51:55,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:55,827 INFO L225 Difference]: With dead ends: 78 [2020-11-29 19:51:55,828 INFO L226 Difference]: Without dead ends: 72 [2020-11-29 19:51:55,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:55,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-29 19:51:55,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-11-29 19:51:55,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-29 19:51:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-11-29 19:51:55,837 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 25 [2020-11-29 19:51:55,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:55,838 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-11-29 19:51:55,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:51:55,838 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-11-29 19:51:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 19:51:55,839 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:55,839 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:56,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:56,055 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]=== [2020-11-29 19:51:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:56,056 INFO L82 PathProgramCache]: Analyzing trace with hash 561189172, now seen corresponding path program 2 times [2020-11-29 19:51:56,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:56,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298007219] [2020-11-29 19:51:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:56,077 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:56,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593624990] [2020-11-29 19:51:56,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:56,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 19:51:56,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:51:56,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:51:56,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 19:51:56,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298007219] [2020-11-29 19:51:56,171 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:56,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593624990] [2020-11-29 19:51:56,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:51:56,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:51:56,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066495949] [2020-11-29 19:51:56,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:51:56,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:56,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:51:56,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:51:56,173 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 5 states. [2020-11-29 19:51:56,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:56,217 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2020-11-29 19:51:56,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:51:56,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-29 19:51:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:56,218 INFO L225 Difference]: With dead ends: 107 [2020-11-29 19:51:56,219 INFO L226 Difference]: Without dead ends: 79 [2020-11-29 19:51:56,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-29 19:51:56,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-11-29 19:51:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 19:51:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-11-29 19:51:56,228 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 26 [2020-11-29 19:51:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:56,228 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-11-29 19:51:56,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:51:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-11-29 19:51:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 19:51:56,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:56,229 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-11-29 19:51:56,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:56,452 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]=== [2020-11-29 19:51:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:56,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1210116596, now seen corresponding path program 2 times [2020-11-29 19:51:56,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:56,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868423984] [2020-11-29 19:51:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:56,460 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:56,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799095555] [2020-11-29 19:51:56,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:56,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:51:56,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:51:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:51:56,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:56,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868423984] [2020-11-29 19:51:56,591 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:56,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799095555] [2020-11-29 19:51:56,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:56,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:51:56,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986574596] [2020-11-29 19:51:56,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:51:56,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:56,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:51:56,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:56,592 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 6 states. [2020-11-29 19:51:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:56,857 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2020-11-29 19:51:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:51:56,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-29 19:51:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:56,859 INFO L225 Difference]: With dead ends: 179 [2020-11-29 19:51:56,859 INFO L226 Difference]: Without dead ends: 139 [2020-11-29 19:51:56,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:51:56,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-29 19:51:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 97. [2020-11-29 19:51:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-29 19:51:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 116 transitions. [2020-11-29 19:51:56,869 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 116 transitions. Word has length 26 [2020-11-29 19:51:56,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:56,870 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 116 transitions. [2020-11-29 19:51:56,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:51:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 116 transitions. [2020-11-29 19:51:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 19:51:56,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:56,871 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:57,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 19:51:57,071 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]=== [2020-11-29 19:51:57,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:57,072 INFO L82 PathProgramCache]: Analyzing trace with hash 187596510, now seen corresponding path program 1 times [2020-11-29 19:51:57,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:57,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011842628] [2020-11-29 19:51:57,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:57,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:57,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034952840] [2020-11-29 19:51:57,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:57,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:51:57,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:57,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011842628] [2020-11-29 19:51:57,215 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:57,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034952840] [2020-11-29 19:51:57,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:57,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:51:57,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248423244] [2020-11-29 19:51:57,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:51:57,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:51:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:57,216 INFO L87 Difference]: Start difference. First operand 97 states and 116 transitions. Second operand 6 states. [2020-11-29 19:51:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:57,273 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2020-11-29 19:51:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:51:57,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 19:51:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:57,275 INFO L225 Difference]: With dead ends: 105 [2020-11-29 19:51:57,275 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 19:51:57,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:51:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 19:51:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-11-29 19:51:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-29 19:51:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2020-11-29 19:51:57,286 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 27 [2020-11-29 19:51:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:57,286 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2020-11-29 19:51:57,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:51:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2020-11-29 19:51:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 19:51:57,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:57,288 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:57,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:57,512 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]=== [2020-11-29 19:51:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:57,512 INFO L82 PathProgramCache]: Analyzing trace with hash -716521134, now seen corresponding path program 1 times [2020-11-29 19:51:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732814607] [2020-11-29 19:51:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:57,521 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:57,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512621067] [2020-11-29 19:51:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-29 19:51:57,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:57,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:57,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732814607] [2020-11-29 19:51:57,713 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:57,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512621067] [2020-11-29 19:51:57,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:57,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:51:57,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911536085] [2020-11-29 19:51:57,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:51:57,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:57,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:51:57,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:51:57,716 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand 6 states. [2020-11-29 19:51:57,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:57,965 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2020-11-29 19:51:57,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:51:57,966 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-11-29 19:51:57,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:57,967 INFO L225 Difference]: With dead ends: 115 [2020-11-29 19:51:57,967 INFO L226 Difference]: Without dead ends: 113 [2020-11-29 19:51:57,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:51:57,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-29 19:51:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-11-29 19:51:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-29 19:51:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2020-11-29 19:51:57,976 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 29 [2020-11-29 19:51:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:57,976 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2020-11-29 19:51:57,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:51:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2020-11-29 19:51:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 19:51:57,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:57,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:58,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:58,179 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]=== [2020-11-29 19:51:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash -737343398, now seen corresponding path program 1 times [2020-11-29 19:51:58,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:58,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264169428] [2020-11-29 19:51:58,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:58,188 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:58,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678357979] [2020-11-29 19:51:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:58,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:51:58,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:58,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264169428] [2020-11-29 19:51:58,315 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:58,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678357979] [2020-11-29 19:51:58,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:58,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:51:58,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610158133] [2020-11-29 19:51:58,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:51:58,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:58,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:51:58,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:51:58,317 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand 7 states. [2020-11-29 19:51:58,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:58,367 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-11-29 19:51:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:51:58,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-11-29 19:51:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:58,371 INFO L225 Difference]: With dead ends: 116 [2020-11-29 19:51:58,371 INFO L226 Difference]: Without dead ends: 106 [2020-11-29 19:51:58,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:51:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-29 19:51:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-29 19:51:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-29 19:51:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2020-11-29 19:51:58,384 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 30 [2020-11-29 19:51:58,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:58,384 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2020-11-29 19:51:58,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:51:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2020-11-29 19:51:58,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 19:51:58,389 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:58,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:51:58,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 19:51:58,616 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]=== [2020-11-29 19:51:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash 442684688, now seen corresponding path program 1 times [2020-11-29 19:51:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:58,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452511471] [2020-11-29 19:51:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:58,624 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:58,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677239089] [2020-11-29 19:51:58,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/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 [2020-11-29 19:51:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:51:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 19:51:58,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:51:58,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452511471] [2020-11-29 19:51:58,818 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:58,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677239089] [2020-11-29 19:51:58,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:58,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:51:58,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502233230] [2020-11-29 19:51:58,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:51:58,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:58,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:51:58,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:51:58,820 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand 7 states. [2020-11-29 19:51:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:59,041 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2020-11-29 19:51:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:51:59,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-29 19:51:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:59,043 INFO L225 Difference]: With dead ends: 112 [2020-11-29 19:51:59,043 INFO L226 Difference]: Without dead ends: 95 [2020-11-29 19:51:59,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:51:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-11-29 19:51:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-11-29 19:51:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-29 19:51:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2020-11-29 19:51:59,050 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 34 [2020-11-29 19:51:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:59,051 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2020-11-29 19:51:59,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:51:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2020-11-29 19:51:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 19:51:59,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:59,057 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-11-29 19:51:59,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:51:59,270 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]=== [2020-11-29 19:51:59,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:51:59,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1379248198, now seen corresponding path program 3 times [2020-11-29 19:51:59,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:51:59,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420408687] [2020-11-29 19:51:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:51:59,278 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:51:59,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907942816] [2020-11-29 19:51:59,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:51:59,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 19:51:59,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:51:59,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:51:59,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:51:59,391 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:51:59,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:51:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-29 19:51:59,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420408687] [2020-11-29 19:51:59,491 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:51:59,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907942816] [2020-11-29 19:51:59,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:51:59,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:51:59,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289821306] [2020-11-29 19:51:59,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:51:59,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:51:59,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:51:59,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:51:59,493 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand 7 states. [2020-11-29 19:51:59,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:51:59,773 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2020-11-29 19:51:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:51:59,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-11-29 19:51:59,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:51:59,775 INFO L225 Difference]: With dead ends: 113 [2020-11-29 19:51:59,775 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 19:51:59,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:51:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 19:51:59,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2020-11-29 19:51:59,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-29 19:51:59,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 113 transitions. [2020-11-29 19:51:59,794 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 113 transitions. Word has length 34 [2020-11-29 19:51:59,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:51:59,795 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 113 transitions. [2020-11-29 19:51:59,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:51:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 113 transitions. [2020-11-29 19:51:59,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:51:59,798 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:51:59,798 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:00,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 19:52:00,020 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-11-29 19:52:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1135708876, now seen corresponding path program 2 times [2020-11-29 19:52:00,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:00,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396512218] [2020-11-29 19:52:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:00,029 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:00,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [571555915] [2020-11-29 19:52:00,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:00,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:52:00,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:52:00,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:52:00,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:00,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396512218] [2020-11-29 19:52:00,186 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:00,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571555915] [2020-11-29 19:52:00,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:00,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:52:00,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763552342] [2020-11-29 19:52:00,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:52:00,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:00,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:52:00,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:52:00,187 INFO L87 Difference]: Start difference. First operand 97 states and 113 transitions. Second operand 7 states. [2020-11-29 19:52:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:00,264 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2020-11-29 19:52:00,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:52:00,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-11-29 19:52:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:00,266 INFO L225 Difference]: With dead ends: 107 [2020-11-29 19:52:00,266 INFO L226 Difference]: Without dead ends: 99 [2020-11-29 19:52:00,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:52:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-29 19:52:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-11-29 19:52:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-29 19:52:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-11-29 19:52:00,281 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 35 [2020-11-29 19:52:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:00,281 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-11-29 19:52:00,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:52:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-11-29 19:52:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 19:52:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:00,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:00,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:00,507 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-11-29 19:52:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash -113604160, now seen corresponding path program 2 times [2020-11-29 19:52:00,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:00,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128696987] [2020-11-29 19:52:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:00,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:00,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241297918] [2020-11-29 19:52:00,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:00,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:52:00,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:52:00,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 19:52:00,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:00,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128696987] [2020-11-29 19:52:00,697 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:00,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241297918] [2020-11-29 19:52:00,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:00,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:52:00,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742875068] [2020-11-29 19:52:00,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:52:00,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:00,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:52:00,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:52:00,699 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 7 states. [2020-11-29 19:52:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:01,030 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-11-29 19:52:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:52:01,030 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-11-29 19:52:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:01,031 INFO L225 Difference]: With dead ends: 126 [2020-11-29 19:52:01,031 INFO L226 Difference]: Without dead ends: 124 [2020-11-29 19:52:01,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:52:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-29 19:52:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2020-11-29 19:52:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-29 19:52:01,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 118 transitions. [2020-11-29 19:52:01,042 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 118 transitions. Word has length 37 [2020-11-29 19:52:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:01,043 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 118 transitions. [2020-11-29 19:52:01,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:52:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 118 transitions. [2020-11-29 19:52:01,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 19:52:01,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:01,044 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:01,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 19:52:01,266 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-11-29 19:52:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:01,267 INFO L82 PathProgramCache]: Analyzing trace with hash 773213612, now seen corresponding path program 2 times [2020-11-29 19:52:01,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:01,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206048749] [2020-11-29 19:52:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:01,274 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:01,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1945325330] [2020-11-29 19:52:01,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:01,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:52:01,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:52:01,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:52:01,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:01,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206048749] [2020-11-29 19:52:01,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:01,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945325330] [2020-11-29 19:52:01,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:01,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:52:01,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909284610] [2020-11-29 19:52:01,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:52:01,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:01,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:52:01,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:52:01,419 INFO L87 Difference]: Start difference. First operand 102 states and 118 transitions. Second operand 8 states. [2020-11-29 19:52:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:01,473 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2020-11-29 19:52:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:52:01,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-11-29 19:52:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:01,476 INFO L225 Difference]: With dead ends: 121 [2020-11-29 19:52:01,476 INFO L226 Difference]: Without dead ends: 111 [2020-11-29 19:52:01,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:52:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-29 19:52:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2020-11-29 19:52:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-29 19:52:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2020-11-29 19:52:01,487 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 38 [2020-11-29 19:52:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:01,488 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2020-11-29 19:52:01,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:52:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2020-11-29 19:52:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 19:52:01,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:01,489 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:01,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-29 19:52:01,689 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-11-29 19:52:01,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:01,690 INFO L82 PathProgramCache]: Analyzing trace with hash 295225530, now seen corresponding path program 3 times [2020-11-29 19:52:01,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:01,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135428922] [2020-11-29 19:52:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:01,700 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:01,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732722717] [2020-11-29 19:52:01,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:01,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-29 19:52:01,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:52:01,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:52:01,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:01,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135428922] [2020-11-29 19:52:01,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:01,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732722717] [2020-11-29 19:52:01,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:01,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:52:01,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389307608] [2020-11-29 19:52:01,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:52:01,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:01,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:52:01,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:52:01,851 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand 8 states. [2020-11-29 19:52:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:01,956 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2020-11-29 19:52:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:52:01,958 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-11-29 19:52:01,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:01,959 INFO L225 Difference]: With dead ends: 120 [2020-11-29 19:52:01,959 INFO L226 Difference]: Without dead ends: 112 [2020-11-29 19:52:01,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:52:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-29 19:52:01,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-11-29 19:52:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-29 19:52:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 127 transitions. [2020-11-29 19:52:01,974 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 127 transitions. Word has length 43 [2020-11-29 19:52:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:01,975 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 127 transitions. [2020-11-29 19:52:01,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:52:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 127 transitions. [2020-11-29 19:52:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 19:52:01,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:01,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:02,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:02,192 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-11-29 19:52:02,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:02,192 INFO L82 PathProgramCache]: Analyzing trace with hash 240592444, now seen corresponding path program 1 times [2020-11-29 19:52:02,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:02,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716925851] [2020-11-29 19:52:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:02,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:02,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742024647] [2020-11-29 19:52:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:52:02,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:52:02,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:02,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716925851] [2020-11-29 19:52:02,473 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:02,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742024647] [2020-11-29 19:52:02,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:02,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:52:02,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735856961] [2020-11-29 19:52:02,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:52:02,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:02,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:52:02,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:52:02,475 INFO L87 Difference]: Start difference. First operand 112 states and 127 transitions. Second operand 9 states. [2020-11-29 19:52:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:02,563 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2020-11-29 19:52:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:52:02,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-11-29 19:52:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:02,564 INFO L225 Difference]: With dead ends: 133 [2020-11-29 19:52:02,564 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 19:52:02,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:52:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 19:52:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-11-29 19:52:02,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-29 19:52:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-11-29 19:52:02,576 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 44 [2020-11-29 19:52:02,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:02,576 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-11-29 19:52:02,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:52:02,576 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-11-29 19:52:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:52:02,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:02,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:02,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:02,804 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-11-29 19:52:02,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:02,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1131593552, now seen corresponding path program 1 times [2020-11-29 19:52:02,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:02,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259441752] [2020-11-29 19:52:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:02,811 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:02,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388603112] [2020-11-29 19:52:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:52:02,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:52:02,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:52:02,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259441752] [2020-11-29 19:52:02,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:02,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388603112] [2020-11-29 19:52:02,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:52:02,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:52:02,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843916974] [2020-11-29 19:52:02,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:52:02,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:02,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:52:02,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:52:02,962 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 6 states. [2020-11-29 19:52:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:03,112 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions. [2020-11-29 19:52:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:52:03,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-11-29 19:52:03,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:03,114 INFO L225 Difference]: With dead ends: 110 [2020-11-29 19:52:03,114 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 19:52:03,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:52:03,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 19:52:03,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-11-29 19:52:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 19:52:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-11-29 19:52:03,128 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 45 [2020-11-29 19:52:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:03,128 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-11-29 19:52:03,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:52:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-11-29 19:52:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:52:03,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:03,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:03,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:03,344 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-11-29 19:52:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash -487529236, now seen corresponding path program 2 times [2020-11-29 19:52:03,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:03,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397447693] [2020-11-29 19:52:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:03,351 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:03,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453736992] [2020-11-29 19:52:03,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:03,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:52:03,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:52:03,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 40 conjunts are in the unsatisfiable core [2020-11-29 19:52:03,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:03,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397447693] [2020-11-29 19:52:03,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:03,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453736992] [2020-11-29 19:52:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:03,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-29 19:52:03,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114276007] [2020-11-29 19:52:03,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:52:03,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:03,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:52:03,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:52:03,740 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 12 states. [2020-11-29 19:52:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:04,251 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2020-11-29 19:52:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:52:04,254 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-11-29 19:52:04,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:04,255 INFO L225 Difference]: With dead ends: 89 [2020-11-29 19:52:04,255 INFO L226 Difference]: Without dead ends: 83 [2020-11-29 19:52:04,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:52:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-29 19:52:04,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-11-29 19:52:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 19:52:04,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-11-29 19:52:04,267 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 45 [2020-11-29 19:52:04,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:04,267 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-11-29 19:52:04,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:52:04,268 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-11-29 19:52:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:52:04,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:04,268 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:04,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 19:52:04,495 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-11-29 19:52:04,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:04,496 INFO L82 PathProgramCache]: Analyzing trace with hash -544787538, now seen corresponding path program 3 times [2020-11-29 19:52:04,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:04,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749563645] [2020-11-29 19:52:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:04,508 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:04,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834134763] [2020-11-29 19:52:04,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:04,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 19:52:04,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:52:04,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 38 conjunts are in the unsatisfiable core [2020-11-29 19:52:04,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:52:04,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:52:04,848 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-29 19:52:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:52:04,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749563645] [2020-11-29 19:52:04,922 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:52:04,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834134763] [2020-11-29 19:52:04,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:52:04,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 19:52:04,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593846341] [2020-11-29 19:52:04,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:52:04,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:52:04,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:52:04,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:52:04,926 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 11 states. [2020-11-29 19:52:05,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:52:05,325 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-11-29 19:52:05,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:52:05,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-11-29 19:52:05,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:52:05,326 INFO L225 Difference]: With dead ends: 85 [2020-11-29 19:52:05,327 INFO L226 Difference]: Without dead ends: 65 [2020-11-29 19:52:05,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:52:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-29 19:52:05,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-11-29 19:52:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 19:52:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2020-11-29 19:52:05,338 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 45 [2020-11-29 19:52:05,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:52:05,338 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2020-11-29 19:52:05,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:52:05,338 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2020-11-29 19:52:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 19:52:05,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:52:05,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:52:05,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 19:52:05,560 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-11-29 19:52:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:52:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1593188606, now seen corresponding path program 4 times [2020-11-29 19:52:05,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:52:05,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305766552] [2020-11-29 19:52:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:52:05,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:52:05,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099695666] [2020-11-29 19:52:05,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:05,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:52:05,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 19:52:05,651 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:52:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:52:05,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:52:05,706 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:52:05,706 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:52:05,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:52:05,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:52:05 BoogieIcfgContainer [2020-11-29 19:52:05,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:52:05,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:52:05,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:52:05,983 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:52:05,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:51:52" (3/4) ... [2020-11-29 19:52:05,985 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:52:06,062 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ef438723-1adc-465a-990d-d8b72f3947ca/bin/uautomizer/witness.graphml [2020-11-29 19:52:06,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:52:06,064 INFO L168 Benchmark]: Toolchain (without parser) took 14551.33 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 66.3 MB in the beginning and 36.9 MB in the end (delta: 29.4 MB). Peak memory consumption was 72.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:52:06,065 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 54.4 MB in the beginning and 54.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:52:06,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.02 ms. Allocated memory is still 94.4 MB. Free memory was 66.1 MB in the beginning and 71.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:52:06,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:52:06,066 INFO L168 Benchmark]: Boogie Preprocessor took 33.48 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:52:06,066 INFO L168 Benchmark]: RCFGBuilder took 513.19 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 52.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:52:06,067 INFO L168 Benchmark]: TraceAbstraction took 13616.33 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 51.9 MB in the beginning and 41.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:52:06,067 INFO L168 Benchmark]: Witness Printer took 80.22 ms. Allocated memory is still 138.4 MB. Free memory was 41.1 MB in the beginning and 36.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:52:06,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 54.4 MB in the beginning and 54.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.02 ms. Allocated memory is still 94.4 MB. Free memory was 66.1 MB in the beginning and 71.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.35 ms. Allocated memory is still 94.4 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.48 ms. Allocated memory is still 94.4 MB. Free memory was 69.4 MB in the beginning and 68.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 513.19 ms. Allocated memory is still 94.4 MB. Free memory was 68.2 MB in the beginning and 52.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13616.33 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 51.9 MB in the beginning and 41.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 16.1 GB. * Witness Printer took 80.22 ms. Allocated memory is still 138.4 MB. Free memory was 41.1 MB in the beginning and 36.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND TRUE !(r >= d) VAL [counter=4] [L44] EXPR counter++ VAL [counter=5] [L44] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=5] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=5] [L44] EXPR counter++ VAL [counter=6] [L44] COND FALSE !(counter++<5) [L15] COND TRUE !(cond) VAL [counter=6] [L8] __assert_fail("0", "hard2.c", 8, "reach_error") VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 24, TraceHistogramMax: 5, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 707 SDtfs, 653 SDslu, 1830 SDs, 0 SdLazy, 1606 SolverSat, 224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 514 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 172 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 691 NumberOfCodeBlocks, 659 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 167745 SizeOfPredicates, 96 NumberOfNonLiveVariables, 2645 ConjunctsInSsa, 304 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 124/424 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 incorrect! Received shutdown request...