./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 77dab7aa1785f99b41e292299a6d5b4f844b78f4 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 77dab7aa1785f99b41e292299a6d5b4f844b78f4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:16:11,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:16:11,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:16:11,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:16:11,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:16:11,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:16:11,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:16:11,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:16:11,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:16:11,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:16:11,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:16:11,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:16:11,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:16:11,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:16:11,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:16:11,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:16:11,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:16:11,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:16:11,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:16:11,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:16:11,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:16:11,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:16:11,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:16:11,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:16:11,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:16:11,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:16:11,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:16:11,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:16:11,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:16:11,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:16:11,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:16:11,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:16:11,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:16:11,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:16:11,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:16:11,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:16:11,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:16:11,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:16:11,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:16:11,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:16:11,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:16:11,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:16:11,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:16:11,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:16:11,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:16:11,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:16:11,582 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:16:11,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:16:11,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:16:11,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:16:11,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:16:11,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:16:11,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:16:11,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:16:11,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:16:11,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:16:11,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:16:11,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:16:11,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:16:11,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:16:11,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:16:11,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:16:11,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:16:11,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:16:11,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:16:11,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:16:11,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:16:11,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:16:11,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:16:11,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:16:11,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:16:11,589 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_3ff662b9-83d8-489f-b1c1-616e542f3498/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dab7aa1785f99b41e292299a6d5b4f844b78f4 [2020-12-01 15:16:11,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:16:11,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:16:11,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:16:11,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:16:11,852 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:16:11,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-01 15:16:11,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/01164f6b8/1eb1fc40c5ea4bc1984c92a9909607f6/FLAG14fb534bb [2020-12-01 15:16:12,329 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:16:12,329 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-01 15:16:12,345 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/01164f6b8/1eb1fc40c5ea4bc1984c92a9909607f6/FLAG14fb534bb [2020-12-01 15:16:12,749 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/01164f6b8/1eb1fc40c5ea4bc1984c92a9909607f6 [2020-12-01 15:16:12,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:16:12,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:16:12,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:16:12,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:16:12,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:16:12,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:16:12" (1/1) ... [2020-12-01 15:16:12,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a54712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:12, skipping insertion in model container [2020-12-01 15:16:12,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:16:12" (1/1) ... [2020-12-01 15:16:12,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:16:12,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:16:12,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:16:12,977 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:16:12,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:16:13,009 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:16:13,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13 WrapperNode [2020-12-01 15:16:13,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:16:13,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:16:13,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:16:13,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:16:13,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:16:13,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:16:13,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:16:13,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:16:13,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... [2020-12-01 15:16:13,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:16:13,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:16:13,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:16:13,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:16:13,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:16:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:16:13,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:16:13,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:16:13,421 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-01 15:16:13,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:13 BoogieIcfgContainer [2020-12-01 15:16:13,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:16:13,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:16:13,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:16:13,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:16:13,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:16:12" (1/3) ... [2020-12-01 15:16:13,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b71378f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:16:13, skipping insertion in model container [2020-12-01 15:16:13,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:13" (2/3) ... [2020-12-01 15:16:13,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b71378f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:16:13, skipping insertion in model container [2020-12-01 15:16:13,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:13" (3/3) ... [2020-12-01 15:16:13,459 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound10.c [2020-12-01 15:16:13,476 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:16:13,479 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:16:13,496 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:16:13,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:16:13,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:16:13,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:16:13,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:16:13,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:16:13,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:16:13,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:16:13,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:16:13,570 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-01 15:16:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:16:13,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:13,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:16:13,578 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]=== [2020-12-01 15:16:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-01 15:16:13,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:13,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820057040] [2020-12-01 15:16:13,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:13,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820057040] [2020-12-01 15:16:13,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:13,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:13,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424081781] [2020-12-01 15:16:13,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:13,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:13,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:13,916 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-01 15:16:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:14,067 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-01 15:16:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:14,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-01 15:16:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:14,088 INFO L225 Difference]: With dead ends: 102 [2020-12-01 15:16:14,095 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:16:14,097 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 [2020-12-01 15:16:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:16:14,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-01 15:16:14,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 15:16:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-01 15:16:14,130 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-01 15:16:14,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:14,131 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-01 15:16:14,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:14,131 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-01 15:16:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:16:14,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:14,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:14,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:16:14,132 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]=== [2020-12-01 15:16:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash 179013485, now seen corresponding path program 1 times [2020-12-01 15:16:14,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:14,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115317501] [2020-12-01 15:16:14,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:14,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:14,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18743955] [2020-12-01 15:16:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:14,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:16:14,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:14,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115317501] [2020-12-01 15:16:14,332 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:14,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18743955] [2020-12-01 15:16:14,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:14,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:16:14,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494085542] [2020-12-01 15:16:14,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:14,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:14,339 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-01 15:16:14,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:14,374 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-01 15:16:14,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:16:14,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 15:16:14,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:14,379 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:16:14,379 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 15:16:14,383 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 [2020-12-01 15:16:14,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 15:16:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-01 15:16:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 15:16:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-01 15:16:14,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-01 15:16:14,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:14,398 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-01 15:16:14,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:14,398 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-01 15:16:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:16:14,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:14,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:14,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:16:14,626 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]=== [2020-12-01 15:16:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:14,627 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-12-01 15:16:14,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:14,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530614280] [2020-12-01 15:16:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:14,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530614280] [2020-12-01 15:16:14,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:14,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:16:14,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971448149] [2020-12-01 15:16:14,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:16:14,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:14,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:16:14,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:16:14,678 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-01 15:16:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:14,750 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-01 15:16:14,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:14,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 15:16:14,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:14,758 INFO L225 Difference]: With dead ends: 54 [2020-12-01 15:16:14,759 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 15:16:14,759 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 [2020-12-01 15:16:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 15:16:14,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-01 15:16:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 15:16:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-01 15:16:14,766 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-01 15:16:14,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:14,766 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-01 15:16:14,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:16:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-01 15:16:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:16:14,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:14,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:14,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:16:14,768 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]=== [2020-12-01 15:16:14,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:14,768 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-12-01 15:16:14,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:14,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051288158] [2020-12-01 15:16:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:14,796 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:14,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397613254] [2020-12-01 15:16:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:14,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:16:14,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:14,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051288158] [2020-12-01 15:16:14,961 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:14,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397613254] [2020-12-01 15:16:14,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:14,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:16:14,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244967496] [2020-12-01 15:16:14,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:14,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:14,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:14,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:14,963 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-01 15:16:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:15,090 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-01 15:16:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:15,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 15:16:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:15,093 INFO L225 Difference]: With dead ends: 79 [2020-12-01 15:16:15,093 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 15:16:15,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 15:16:15,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-01 15:16:15,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:16:15,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-01 15:16:15,121 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-01 15:16:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:15,121 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-01 15:16:15,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-01 15:16:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:16:15,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:15,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:15,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:15,338 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]=== [2020-12-01 15:16:15,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:15,339 INFO L82 PathProgramCache]: Analyzing trace with hash 2079564058, now seen corresponding path program 1 times [2020-12-01 15:16:15,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:15,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419939041] [2020-12-01 15:16:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:15,352 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:15,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474341090] [2020-12-01 15:16:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:15,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:16:15,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:15,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419939041] [2020-12-01 15:16:15,494 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:15,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474341090] [2020-12-01 15:16:15,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:15,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:16:15,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132426122] [2020-12-01 15:16:15,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:15,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:15,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:15,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:15,505 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-01 15:16:15,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:15,582 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-01 15:16:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:16:15,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:16:15,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:15,584 INFO L225 Difference]: With dead ends: 66 [2020-12-01 15:16:15,584 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:16:15,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:16:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-01 15:16:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-01 15:16:15,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-01 15:16:15,592 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-01 15:16:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:15,592 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-01 15:16:15,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-01 15:16:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:16:15,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:15,594 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:15,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:15,814 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]=== [2020-12-01 15:16:15,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:15,814 INFO L82 PathProgramCache]: Analyzing trace with hash 18473186, now seen corresponding path program 1 times [2020-12-01 15:16:15,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:15,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025217996] [2020-12-01 15:16:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:15,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:15,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968950048] [2020-12-01 15:16:15,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:15,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:16:15,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:15,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025217996] [2020-12-01 15:16:15,908 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:15,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968950048] [2020-12-01 15:16:15,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:15,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-01 15:16:15,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318664191] [2020-12-01 15:16:15,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:15,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:15,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:15,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:15,910 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-01 15:16:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:15,935 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-01 15:16:15,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:15,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 15:16:15,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:15,936 INFO L225 Difference]: With dead ends: 78 [2020-12-01 15:16:15,937 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:16:15,937 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 [2020-12-01 15:16:15,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:16:15,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-01 15:16:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-01 15:16:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-01 15:16:15,944 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-01 15:16:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:15,945 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-01 15:16:15,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-01 15:16:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:16:15,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:15,946 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:16,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:16,174 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]=== [2020-12-01 15:16:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash 667400610, now seen corresponding path program 1 times [2020-12-01 15:16:16,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:16,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806784120] [2020-12-01 15:16:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:16,187 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:16,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410987699] [2020-12-01 15:16:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:16,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:16:16,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:16,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806784120] [2020-12-01 15:16:16,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:16,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410987699] [2020-12-01 15:16:16,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:16,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:16:16,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079868800] [2020-12-01 15:16:16,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:16,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:16,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:16,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:16,332 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-01 15:16:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:16,520 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-01 15:16:16,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:16:16,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-01 15:16:16,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:16,521 INFO L225 Difference]: With dead ends: 117 [2020-12-01 15:16:16,522 INFO L226 Difference]: Without dead ends: 77 [2020-12-01 15:16:16,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:16,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-01 15:16:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-01 15:16:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-01 15:16:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-01 15:16:16,531 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-01 15:16:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:16,531 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-01 15:16:16,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-01 15:16:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:16:16,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:16,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:16,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 15:16:16,746 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]=== [2020-12-01 15:16:16,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:16,746 INFO L82 PathProgramCache]: Analyzing trace with hash 293037475, now seen corresponding path program 1 times [2020-12-01 15:16:16,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:16,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225910896] [2020-12-01 15:16:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:16,757 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:16,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469278420] [2020-12-01 15:16:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:16,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:16:16,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:16,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225910896] [2020-12-01 15:16:16,896 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:16,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469278420] [2020-12-01 15:16:16,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:16,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:16:16,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863213683] [2020-12-01 15:16:16,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:16,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:16,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:16,901 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-01 15:16:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:16,926 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-01 15:16:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:16,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-01 15:16:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:16,928 INFO L225 Difference]: With dead ends: 70 [2020-12-01 15:16:16,932 INFO L226 Difference]: Without dead ends: 64 [2020-12-01 15:16:16,932 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 [2020-12-01 15:16:16,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-01 15:16:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-01 15:16:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-01 15:16:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-01 15:16:16,953 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-01 15:16:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:16,954 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-01 15:16:16,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:16,954 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-01 15:16:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 15:16:16,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:16,956 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:17,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:17,162 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]=== [2020-12-01 15:16:17,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:17,162 INFO L82 PathProgramCache]: Analyzing trace with hash 561189172, now seen corresponding path program 2 times [2020-12-01 15:16:17,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:17,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776882809] [2020-12-01 15:16:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:17,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:17,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081030550] [2020-12-01 15:16:17,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:17,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 15:16:17,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:17,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:16:17,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-01 15:16:17,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776882809] [2020-12-01 15:16:17,265 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:17,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081030550] [2020-12-01 15:16:17,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:17,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 15:16:17,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915484079] [2020-12-01 15:16:17,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:17,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:17,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:17,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:17,267 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-01 15:16:17,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:17,316 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-01 15:16:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:17,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-01 15:16:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:17,320 INFO L225 Difference]: With dead ends: 99 [2020-12-01 15:16:17,320 INFO L226 Difference]: Without dead ends: 71 [2020-12-01 15:16:17,321 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 [2020-12-01 15:16:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-01 15:16:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-01 15:16:17,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-01 15:16:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-01 15:16:17,344 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-01 15:16:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:17,345 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-01 15:16:17,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-01 15:16:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 15:16:17,351 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:17,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-01 15:16:17,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:17,578 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]=== [2020-12-01 15:16:17,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1210116596, now seen corresponding path program 2 times [2020-12-01 15:16:17,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:17,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076264481] [2020-12-01 15:16:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:17,588 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:17,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547402081] [2020-12-01 15:16:17,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:17,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:17,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:17,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 15:16:17,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:17,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076264481] [2020-12-01 15:16:17,828 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:17,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547402081] [2020-12-01 15:16:17,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:17,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:17,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188848984] [2020-12-01 15:16:17,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:17,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:17,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:17,831 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-01 15:16:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:18,072 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-01 15:16:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:16:18,073 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-01 15:16:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:18,074 INFO L225 Difference]: With dead ends: 138 [2020-12-01 15:16:18,074 INFO L226 Difference]: Without dead ends: 124 [2020-12-01 15:16:18,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-01 15:16:18,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-01 15:16:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-01 15:16:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-01 15:16:18,092 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-01 15:16:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:18,093 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-01 15:16:18,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-01 15:16:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:16:18,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:18,095 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:18,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 15:16:18,298 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]=== [2020-12-01 15:16:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash 187596510, now seen corresponding path program 1 times [2020-12-01 15:16:18,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:18,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604366366] [2020-12-01 15:16:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:18,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:18,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955739557] [2020-12-01 15:16:18,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:18,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:16:18,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:18,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604366366] [2020-12-01 15:16:18,450 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:18,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955739557] [2020-12-01 15:16:18,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:18,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:16:18,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747372956] [2020-12-01 15:16:18,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:18,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:18,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:18,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:18,453 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-01 15:16:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:18,496 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-01 15:16:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:18,497 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-01 15:16:18,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:18,499 INFO L225 Difference]: With dead ends: 100 [2020-12-01 15:16:18,499 INFO L226 Difference]: Without dead ends: 92 [2020-12-01 15:16:18,500 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 [2020-12-01 15:16:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-01 15:16:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-01 15:16:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-01 15:16:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-01 15:16:18,511 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-01 15:16:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:18,511 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-01 15:16:18,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:18,511 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-01 15:16:18,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 15:16:18,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:18,516 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] [2020-12-01 15:16:18,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:18,730 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]=== [2020-12-01 15:16:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:18,730 INFO L82 PathProgramCache]: Analyzing trace with hash -716521134, now seen corresponding path program 1 times [2020-12-01 15:16:18,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:18,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383512293] [2020-12-01 15:16:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:18,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:18,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429706844] [2020-12-01 15:16:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:18,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 15:16:18,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:18,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383512293] [2020-12-01 15:16:18,966 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:18,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429706844] [2020-12-01 15:16:18,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:18,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:16:18,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987059972] [2020-12-01 15:16:18,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:18,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:18,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:18,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:18,970 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-01 15:16:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:19,140 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-01 15:16:19,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:19,141 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-01 15:16:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:19,142 INFO L225 Difference]: With dead ends: 114 [2020-12-01 15:16:19,142 INFO L226 Difference]: Without dead ends: 112 [2020-12-01 15:16:19,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-01 15:16:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-01 15:16:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 15:16:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-01 15:16:19,151 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-01 15:16:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:19,151 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-01 15:16:19,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-01 15:16:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 15:16:19,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:19,153 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] [2020-12-01 15:16:19,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:19,378 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]=== [2020-12-01 15:16:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:19,378 INFO L82 PathProgramCache]: Analyzing trace with hash -737343398, now seen corresponding path program 1 times [2020-12-01 15:16:19,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:19,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000226255] [2020-12-01 15:16:19,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:19,387 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:19,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [355903536] [2020-12-01 15:16:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:19,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:16:19,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:19,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000226255] [2020-12-01 15:16:19,577 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:19,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355903536] [2020-12-01 15:16:19,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:19,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:16:19,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044979163] [2020-12-01 15:16:19,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:19,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:19,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:19,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:19,579 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-01 15:16:19,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:19,618 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-01 15:16:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:19,619 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-01 15:16:19,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:19,622 INFO L225 Difference]: With dead ends: 112 [2020-12-01 15:16:19,622 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 15:16:19,623 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 [2020-12-01 15:16:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 15:16:19,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-01 15:16:19,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-01 15:16:19,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-01 15:16:19,631 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-01 15:16:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:19,632 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-01 15:16:19,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-01 15:16:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 15:16:19,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:19,633 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:19,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-01 15:16:19,850 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]=== [2020-12-01 15:16:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:19,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1381854411, now seen corresponding path program 1 times [2020-12-01 15:16:19,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:19,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613914253] [2020-12-01 15:16:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:19,858 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:19,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835021295] [2020-12-01 15:16:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:19,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-01 15:16:19,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:20,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:20,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613914253] [2020-12-01 15:16:20,032 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:20,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835021295] [2020-12-01 15:16:20,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:20,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:20,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108350075] [2020-12-01 15:16:20,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:20,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:20,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:20,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:20,034 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-01 15:16:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:20,207 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-01 15:16:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:16:20,207 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-01 15:16:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:20,208 INFO L225 Difference]: With dead ends: 130 [2020-12-01 15:16:20,208 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 15:16:20,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:20,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 15:16:20,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-01 15:16:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-01 15:16:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-01 15:16:20,220 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-01 15:16:20,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:20,221 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-01 15:16:20,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-01 15:16:20,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 15:16:20,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:20,222 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] [2020-12-01 15:16:20,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-01 15:16:20,446 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]=== [2020-12-01 15:16:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 442684688, now seen corresponding path program 1 times [2020-12-01 15:16:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352384439] [2020-12-01 15:16:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:20,454 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:20,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873756394] [2020-12-01 15:16:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:20,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-01 15:16:20,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:20,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352384439] [2020-12-01 15:16:20,694 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:20,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873756394] [2020-12-01 15:16:20,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:20,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:20,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845630874] [2020-12-01 15:16:20,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:20,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:20,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:20,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:20,698 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-12-01 15:16:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:20,860 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-12-01 15:16:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:16:20,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-01 15:16:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:20,862 INFO L225 Difference]: With dead ends: 102 [2020-12-01 15:16:20,862 INFO L226 Difference]: Without dead ends: 85 [2020-12-01 15:16:20,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-01 15:16:20,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-01 15:16:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-01 15:16:20,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2020-12-01 15:16:20,875 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 34 [2020-12-01 15:16:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:20,875 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2020-12-01 15:16:20,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2020-12-01 15:16:20,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 15:16:20,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:20,877 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-01 15:16:21,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-01 15:16:21,090 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]=== [2020-12-01 15:16:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1379248198, now seen corresponding path program 3 times [2020-12-01 15:16:21,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:21,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110403532] [2020-12-01 15:16:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:21,099 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:21,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087875388] [2020-12-01 15:16:21,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:21,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:16:21,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:21,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-01 15:16:21,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-01 15:16:21,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110403532] [2020-12-01 15:16:21,352 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:21,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087875388] [2020-12-01 15:16:21,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:21,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:16:21,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411205336] [2020-12-01 15:16:21,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:21,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:21,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:21,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:21,353 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand 9 states. [2020-12-01 15:16:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:21,597 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2020-12-01 15:16:21,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:16:21,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-01 15:16:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:21,599 INFO L225 Difference]: With dead ends: 112 [2020-12-01 15:16:21,599 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 15:16:21,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:21,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 15:16:21,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 83. [2020-12-01 15:16:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-01 15:16:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-01 15:16:21,614 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2020-12-01 15:16:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:21,615 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-01 15:16:21,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-01 15:16:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 15:16:21,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:21,616 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:21,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:21,838 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]=== [2020-12-01 15:16:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:21,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1135708876, now seen corresponding path program 2 times [2020-12-01 15:16:21,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:21,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492287015] [2020-12-01 15:16:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:21,846 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:21,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764528251] [2020-12-01 15:16:21,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:21,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:21,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:21,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:16:21,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:21,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492287015] [2020-12-01 15:16:21,979 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:21,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764528251] [2020-12-01 15:16:21,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:21,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:16:21,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491165240] [2020-12-01 15:16:21,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:16:21,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:21,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:16:21,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:21,981 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2020-12-01 15:16:22,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:22,034 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-12-01 15:16:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:16:22,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-01 15:16:22,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:22,036 INFO L225 Difference]: With dead ends: 93 [2020-12-01 15:16:22,036 INFO L226 Difference]: Without dead ends: 85 [2020-12-01 15:16:22,037 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 [2020-12-01 15:16:22,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-01 15:16:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-01 15:16:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-01 15:16:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-12-01 15:16:22,045 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2020-12-01 15:16:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:22,045 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-12-01 15:16:22,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:16:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-12-01 15:16:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 15:16:22,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:22,046 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] [2020-12-01 15:16:22,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-01 15:16:22,258 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]=== [2020-12-01 15:16:22,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:22,258 INFO L82 PathProgramCache]: Analyzing trace with hash -113604160, now seen corresponding path program 2 times [2020-12-01 15:16:22,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:22,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324627396] [2020-12-01 15:16:22,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:22,265 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:22,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504408329] [2020-12-01 15:16:22,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:22,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:22,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-01 15:16:22,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:22,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324627396] [2020-12-01 15:16:22,479 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:22,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504408329] [2020-12-01 15:16:22,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:22,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:22,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531128332] [2020-12-01 15:16:22,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:22,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:22,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:22,482 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-12-01 15:16:22,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:22,806 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-12-01 15:16:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:16:22,806 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-01 15:16:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:22,807 INFO L225 Difference]: With dead ends: 157 [2020-12-01 15:16:22,807 INFO L226 Difference]: Without dead ends: 119 [2020-12-01 15:16:22,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-01 15:16:22,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-01 15:16:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 15:16:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-01 15:16:22,817 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2020-12-01 15:16:22,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:22,817 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-01 15:16:22,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-01 15:16:22,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 15:16:22,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:22,818 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] [2020-12-01 15:16:23,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-01 15:16:23,034 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]=== [2020-12-01 15:16:23,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:23,034 INFO L82 PathProgramCache]: Analyzing trace with hash 773213612, now seen corresponding path program 2 times [2020-12-01 15:16:23,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:23,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955608065] [2020-12-01 15:16:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:23,041 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:23,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480806631] [2020-12-01 15:16:23,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:23,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:23,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:23,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:16:23,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:23,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955608065] [2020-12-01 15:16:23,182 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:23,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480806631] [2020-12-01 15:16:23,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:23,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:16:23,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362902467] [2020-12-01 15:16:23,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:23,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:23,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:23,184 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2020-12-01 15:16:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:23,232 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-01 15:16:23,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:16:23,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-01 15:16:23,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:23,233 INFO L225 Difference]: With dead ends: 118 [2020-12-01 15:16:23,233 INFO L226 Difference]: Without dead ends: 108 [2020-12-01 15:16:23,234 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 [2020-12-01 15:16:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-01 15:16:23,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-01 15:16:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-01 15:16:23,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-12-01 15:16:23,245 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2020-12-01 15:16:23,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:23,245 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-12-01 15:16:23,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-12-01 15:16:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-01 15:16:23,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:23,246 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:23,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:23,462 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]=== [2020-12-01 15:16:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:23,462 INFO L82 PathProgramCache]: Analyzing trace with hash 295225530, now seen corresponding path program 3 times [2020-12-01 15:16:23,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:23,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974144996] [2020-12-01 15:16:23,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:23,468 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:23,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796749176] [2020-12-01 15:16:23,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:23,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-01 15:16:23,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:23,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:16:23,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:23,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974144996] [2020-12-01 15:16:23,622 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:23,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796749176] [2020-12-01 15:16:23,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:23,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:16:23,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198898985] [2020-12-01 15:16:23,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:16:23,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:23,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:16:23,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:16:23,624 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-12-01 15:16:23,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:23,718 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-01 15:16:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:16:23,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-01 15:16:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:23,721 INFO L225 Difference]: With dead ends: 117 [2020-12-01 15:16:23,721 INFO L226 Difference]: Without dead ends: 109 [2020-12-01 15:16:23,722 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 [2020-12-01 15:16:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-01 15:16:23,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-01 15:16:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-01 15:16:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-12-01 15:16:23,731 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2020-12-01 15:16:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:23,731 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-12-01 15:16:23,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:16:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-12-01 15:16:23,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-01 15:16:23,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:23,732 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] [2020-12-01 15:16:23,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:23,946 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]=== [2020-12-01 15:16:23,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:23,946 INFO L82 PathProgramCache]: Analyzing trace with hash 240592444, now seen corresponding path program 1 times [2020-12-01 15:16:23,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:23,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857631633] [2020-12-01 15:16:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:23,953 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:23,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862111515] [2020-12-01 15:16:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:16:24,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 15:16:24,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857631633] [2020-12-01 15:16:24,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:24,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862111515] [2020-12-01 15:16:24,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:24,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:16:24,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763566495] [2020-12-01 15:16:24,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:24,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:24,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:24,165 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 6 states. [2020-12-01 15:16:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:24,278 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-12-01 15:16:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:24,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-12-01 15:16:24,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:24,279 INFO L225 Difference]: With dead ends: 179 [2020-12-01 15:16:24,279 INFO L226 Difference]: Without dead ends: 144 [2020-12-01 15:16:24,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:24,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-01 15:16:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 96. [2020-12-01 15:16:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-01 15:16:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2020-12-01 15:16:24,290 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 44 [2020-12-01 15:16:24,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:24,291 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2020-12-01 15:16:24,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:24,291 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2020-12-01 15:16:24,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-01 15:16:24,292 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:24,292 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-01 15:16:24,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:24,506 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]=== [2020-12-01 15:16:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:24,506 INFO L82 PathProgramCache]: Analyzing trace with hash -17572994, now seen corresponding path program 3 times [2020-12-01 15:16:24,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:24,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891079771] [2020-12-01 15:16:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:24,513 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:24,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618911899] [2020-12-01 15:16:24,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:24,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 15:16:24,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:24,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-01 15:16:24,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:24,737 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:24,746 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 15:16:24,752 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-01 15:16:24,763 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:24,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:24,770 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 15:16:24,774 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:24,777 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 15:16:24,799 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 15:16:24,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-01 15:16:24,810 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:24,812 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:24,816 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 15:16:24,821 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:24,823 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 15:16:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-01 15:16:25,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891079771] [2020-12-01 15:16:25,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:25,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618911899] [2020-12-01 15:16:25,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:25,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:16:25,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729498001] [2020-12-01 15:16:25,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:16:25,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:25,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:16:25,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:25,215 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 10 states. [2020-12-01 15:16:25,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:25,424 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-12-01 15:16:25,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:25,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-01 15:16:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:25,426 INFO L225 Difference]: With dead ends: 100 [2020-12-01 15:16:25,426 INFO L226 Difference]: Without dead ends: 96 [2020-12-01 15:16:25,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-01 15:16:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2020-12-01 15:16:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-01 15:16:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2020-12-01 15:16:25,438 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 44 [2020-12-01 15:16:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:25,438 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2020-12-01 15:16:25,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:16:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2020-12-01 15:16:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 15:16:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:25,439 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] [2020-12-01 15:16:25,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-01 15:16:25,663 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]=== [2020-12-01 15:16:25,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:25,663 INFO L82 PathProgramCache]: Analyzing trace with hash -487529236, now seen corresponding path program 1 times [2020-12-01 15:16:25,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:25,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631248939] [2020-12-01 15:16:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:25,669 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:25,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839401862] [2020-12-01 15:16:25,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:25,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:16:25,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:25,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631248939] [2020-12-01 15:16:25,852 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:25,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839401862] [2020-12-01 15:16:25,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:25,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:25,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976492473] [2020-12-01 15:16:25,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:25,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:25,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:25,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:25,855 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand 9 states. [2020-12-01 15:16:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:25,930 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-12-01 15:16:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:16:25,930 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-01 15:16:25,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:25,931 INFO L225 Difference]: With dead ends: 112 [2020-12-01 15:16:25,931 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 15:16:25,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 15:16:25,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-01 15:16:25,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-01 15:16:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-12-01 15:16:25,943 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 45 [2020-12-01 15:16:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:25,943 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-12-01 15:16:25,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:25,943 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-12-01 15:16:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-01 15:16:25,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:25,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:26,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-01 15:16:26,158 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]=== [2020-12-01 15:16:26,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:26,158 INFO L82 PathProgramCache]: Analyzing trace with hash 604117154, now seen corresponding path program 1 times [2020-12-01 15:16:26,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:26,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574551917] [2020-12-01 15:16:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:26,167 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:26,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944351727] [2020-12-01 15:16:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:26,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-01 15:16:26,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:26,370 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:26,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:26,377 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:26,390 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:26,396 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:26,400 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:26,403 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-01 15:16:26,407 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:16:26,491 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:26,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:26,504 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:26,529 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:26,533 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:16:26,537 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:26,540 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-01 15:16:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:26,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574551917] [2020-12-01 15:16:26,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:26,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944351727] [2020-12-01 15:16:26,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:26,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-01 15:16:26,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803105016] [2020-12-01 15:16:26,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:16:26,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:16:26,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:16:26,840 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 14 states. [2020-12-01 15:16:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:27,422 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2020-12-01 15:16:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:16:27,423 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-12-01 15:16:27,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:27,424 INFO L225 Difference]: With dead ends: 115 [2020-12-01 15:16:27,424 INFO L226 Difference]: Without dead ends: 107 [2020-12-01 15:16:27,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:16:27,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-01 15:16:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-12-01 15:16:27,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-01 15:16:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2020-12-01 15:16:27,438 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 49 [2020-12-01 15:16:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:27,438 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2020-12-01 15:16:27,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:16:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2020-12-01 15:16:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-01 15:16:27,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:27,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:27,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:27,654 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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]=== [2020-12-01 15:16:27,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:27,654 INFO L82 PathProgramCache]: Analyzing trace with hash 997144164, now seen corresponding path program 2 times [2020-12-01 15:16:27,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:27,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481997807] [2020-12-01 15:16:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:27,660 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:27,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520983747] [2020-12-01 15:16:27,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:27,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 15:16:27,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:27,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 15:16:27,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 15:16:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481997807] [2020-12-01 15:16:27,907 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520983747] [2020-12-01 15:16:27,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:27,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 15:16:27,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021472751] [2020-12-01 15:16:27,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:16:27,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:27,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:16:27,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:27,910 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand 11 states. [2020-12-01 15:16:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:28,313 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2020-12-01 15:16:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:16:28,313 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-01 15:16:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:28,314 INFO L225 Difference]: With dead ends: 119 [2020-12-01 15:16:28,315 INFO L226 Difference]: Without dead ends: 111 [2020-12-01 15:16:28,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:16:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-01 15:16:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2020-12-01 15:16:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-01 15:16:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2020-12-01 15:16:28,328 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 49 [2020-12-01 15:16:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:28,329 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2020-12-01 15:16:28,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:16:28,329 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2020-12-01 15:16:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 15:16:28,330 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:28,330 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:28,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-01 15:16:28,550 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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]=== [2020-12-01 15:16:28,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash 781334696, now seen corresponding path program 4 times [2020-12-01 15:16:28,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:28,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141103902] [2020-12-01 15:16:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:28,555 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:28,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317603820] [2020-12-01 15:16:28,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:28,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 15:16:28,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:28,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:16:28,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:28,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141103902] [2020-12-01 15:16:28,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:28,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317603820] [2020-12-01 15:16:28,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:28,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:16:28,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085125597] [2020-12-01 15:16:28,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:28,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:28,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:28,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:28,727 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand 9 states. [2020-12-01 15:16:28,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:28,826 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-12-01 15:16:28,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:16:28,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-01 15:16:28,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:28,828 INFO L225 Difference]: With dead ends: 111 [2020-12-01 15:16:28,828 INFO L226 Difference]: Without dead ends: 103 [2020-12-01 15:16:28,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:16:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-01 15:16:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-12-01 15:16:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-12-01 15:16:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 111 transitions. [2020-12-01 15:16:28,841 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 111 transitions. Word has length 51 [2020-12-01 15:16:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:28,842 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 111 transitions. [2020-12-01 15:16:28,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 111 transitions. [2020-12-01 15:16:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-01 15:16:28,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:28,843 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:29,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:29,058 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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]=== [2020-12-01 15:16:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:29,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1365662292, now seen corresponding path program 2 times [2020-12-01 15:16:29,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:29,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239645595] [2020-12-01 15:16:29,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:29,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:29,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675088199] [2020-12-01 15:16:29,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:29,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:29,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:29,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:16:29,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:29,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239645595] [2020-12-01 15:16:29,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:29,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675088199] [2020-12-01 15:16:29,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:29,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:16:29,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626842875] [2020-12-01 15:16:29,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:16:29,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:16:29,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:29,240 INFO L87 Difference]: Start difference. First operand 103 states and 111 transitions. Second operand 10 states. [2020-12-01 15:16:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:29,321 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2020-12-01 15:16:29,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 15:16:29,322 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-01 15:16:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:29,323 INFO L225 Difference]: With dead ends: 134 [2020-12-01 15:16:29,323 INFO L226 Difference]: Without dead ends: 124 [2020-12-01 15:16:29,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:29,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-01 15:16:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-12-01 15:16:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-12-01 15:16:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2020-12-01 15:16:29,339 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 52 [2020-12-01 15:16:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:29,339 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2020-12-01 15:16:29,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:16:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2020-12-01 15:16:29,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-01 15:16:29,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:29,340 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:29,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-01 15:16:29,554 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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]=== [2020-12-01 15:16:29,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:29,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1065710356, now seen corresponding path program 3 times [2020-12-01 15:16:29,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:29,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881320457] [2020-12-01 15:16:29,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:29,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:29,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410594763] [2020-12-01 15:16:29,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:29,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-01 15:16:29,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:29,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 15:16:29,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:29,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881320457] [2020-12-01 15:16:29,788 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:29,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410594763] [2020-12-01 15:16:29,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:29,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:16:29,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290309750] [2020-12-01 15:16:29,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:16:29,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:29,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:16:29,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:16:29,790 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand 11 states. [2020-12-01 15:16:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:29,894 INFO L93 Difference]: Finished difference Result 158 states and 172 transitions. [2020-12-01 15:16:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:16:29,895 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-01 15:16:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:29,896 INFO L225 Difference]: With dead ends: 158 [2020-12-01 15:16:29,896 INFO L226 Difference]: Without dead ends: 146 [2020-12-01 15:16:29,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:16:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-12-01 15:16:29,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2020-12-01 15:16:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-01 15:16:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2020-12-01 15:16:29,922 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 59 [2020-12-01 15:16:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:29,922 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2020-12-01 15:16:29,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:16:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2020-12-01 15:16:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-01 15:16:29,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:29,924 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:30,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-01 15:16:30,138 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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]=== [2020-12-01 15:16:30,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:30,138 INFO L82 PathProgramCache]: Analyzing trace with hash -94175828, now seen corresponding path program 4 times [2020-12-01 15:16:30,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:30,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954764934] [2020-12-01 15:16:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:30,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:30,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105698186] [2020-12-01 15:16:30,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:30,276 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 15:16:30,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:30,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:16:30,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:30,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954764934] [2020-12-01 15:16:30,432 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:30,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105698186] [2020-12-01 15:16:30,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:30,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 15:16:30,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659721519] [2020-12-01 15:16:30,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:16:30,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:30,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:16:30,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:16:30,435 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand 12 states. [2020-12-01 15:16:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:30,559 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2020-12-01 15:16:30,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 15:16:30,560 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-01 15:16:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:30,561 INFO L225 Difference]: With dead ends: 180 [2020-12-01 15:16:30,562 INFO L226 Difference]: Without dead ends: 168 [2020-12-01 15:16:30,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:16:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-12-01 15:16:30,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-12-01 15:16:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-12-01 15:16:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 181 transitions. [2020-12-01 15:16:30,581 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 181 transitions. Word has length 66 [2020-12-01 15:16:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:30,582 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 181 transitions. [2020-12-01 15:16:30,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:16:30,582 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 181 transitions. [2020-12-01 15:16:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-01 15:16:30,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:30,583 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:30,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-01 15:16:30,787 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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]=== [2020-12-01 15:16:30,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:30,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1208077076, now seen corresponding path program 5 times [2020-12-01 15:16:30,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:30,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225565919] [2020-12-01 15:16:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:30,797 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:30,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612007384] [2020-12-01 15:16:30,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:31,201 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-01 15:16:31,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:31,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:16:31,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:31,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225565919] [2020-12-01 15:16:31,397 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:31,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612007384] [2020-12-01 15:16:31,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:31,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-01 15:16:31,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152116655] [2020-12-01 15:16:31,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:16:31,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:16:31,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:31,399 INFO L87 Difference]: Start difference. First operand 167 states and 181 transitions. Second operand 13 states. [2020-12-01 15:16:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:31,540 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2020-12-01 15:16:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-01 15:16:31,541 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-01 15:16:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:31,542 INFO L225 Difference]: With dead ends: 202 [2020-12-01 15:16:31,542 INFO L226 Difference]: Without dead ends: 190 [2020-12-01 15:16:31,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:16:31,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-01 15:16:31,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2020-12-01 15:16:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-01 15:16:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 205 transitions. [2020-12-01 15:16:31,565 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 205 transitions. Word has length 73 [2020-12-01 15:16:31,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:31,566 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 205 transitions. [2020-12-01 15:16:31,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:16:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 205 transitions. [2020-12-01 15:16:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-01 15:16:31,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:31,567 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:31,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:31,772 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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]=== [2020-12-01 15:16:31,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:31,772 INFO L82 PathProgramCache]: Analyzing trace with hash -554543700, now seen corresponding path program 6 times [2020-12-01 15:16:31,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:31,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46189447] [2020-12-01 15:16:31,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:31,779 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:31,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1648182758] [2020-12-01 15:16:31,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:31,960 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-01 15:16:31,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:31,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-01 15:16:31,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:32,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:32,054 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:32,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:32,059 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 91 proven. 44 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-01 15:16:32,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46189447] [2020-12-01 15:16:32,131 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:32,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648182758] [2020-12-01 15:16:32,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:32,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 15:16:32,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695550846] [2020-12-01 15:16:32,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:16:32,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:32,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:16:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:16:32,133 INFO L87 Difference]: Start difference. First operand 189 states and 205 transitions. Second operand 9 states. [2020-12-01 15:16:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:32,296 INFO L93 Difference]: Finished difference Result 317 states and 347 transitions. [2020-12-01 15:16:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:16:32,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-12-01 15:16:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:32,298 INFO L225 Difference]: With dead ends: 317 [2020-12-01 15:16:32,299 INFO L226 Difference]: Without dead ends: 279 [2020-12-01 15:16:32,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-12-01 15:16:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 263. [2020-12-01 15:16:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-12-01 15:16:32,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 286 transitions. [2020-12-01 15:16:32,328 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 286 transitions. Word has length 80 [2020-12-01 15:16:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:32,328 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 286 transitions. [2020-12-01 15:16:32,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:16:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 286 transitions. [2020-12-01 15:16:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-01 15:16:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:32,330 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:32,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-01 15:16:32,554 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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]=== [2020-12-01 15:16:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1845137550, now seen corresponding path program 7 times [2020-12-01 15:16:32,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:32,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115973532] [2020-12-01 15:16:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:32,559 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:32,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969263394] [2020-12-01 15:16:32,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:32,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:32,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-01 15:16:32,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 88 proven. 43 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-12-01 15:16:32,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115973532] [2020-12-01 15:16:32,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:32,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969263394] [2020-12-01 15:16:32,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:32,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 15:16:32,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721869980] [2020-12-01 15:16:32,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:32,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:32,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:32,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:32,754 INFO L87 Difference]: Start difference. First operand 263 states and 286 transitions. Second operand 5 states. [2020-12-01 15:16:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:32,811 INFO L93 Difference]: Finished difference Result 271 states and 293 transitions. [2020-12-01 15:16:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:16:32,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-01 15:16:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:32,813 INFO L225 Difference]: With dead ends: 271 [2020-12-01 15:16:32,813 INFO L226 Difference]: Without dead ends: 175 [2020-12-01 15:16:32,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-01 15:16:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-12-01 15:16:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-01 15:16:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 189 transitions. [2020-12-01 15:16:32,833 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 189 transitions. Word has length 80 [2020-12-01 15:16:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:32,833 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 189 transitions. [2020-12-01 15:16:32,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 189 transitions. [2020-12-01 15:16:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 15:16:32,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:32,835 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:33,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:33,062 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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]=== [2020-12-01 15:16:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:33,062 INFO L82 PathProgramCache]: Analyzing trace with hash -92958630, now seen corresponding path program 8 times [2020-12-01 15:16:33,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:33,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302662368] [2020-12-01 15:16:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:33,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:33,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965259791] [2020-12-01 15:16:33,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:33,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:16:33,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:33,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-01 15:16:33,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:33,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:33,284 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:33,286 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:33,292 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:33,368 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:33,374 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:33,376 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:33,379 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 73 proven. 81 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-01 15:16:33,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302662368] [2020-12-01 15:16:33,457 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:33,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965259791] [2020-12-01 15:16:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:33,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-01 15:16:33,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834629266] [2020-12-01 15:16:33,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:16:33,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:33,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:16:33,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:33,459 INFO L87 Difference]: Start difference. First operand 175 states and 189 transitions. Second operand 13 states. [2020-12-01 15:16:33,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:33,756 INFO L93 Difference]: Finished difference Result 292 states and 317 transitions. [2020-12-01 15:16:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:16:33,756 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-12-01 15:16:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:33,758 INFO L225 Difference]: With dead ends: 292 [2020-12-01 15:16:33,758 INFO L226 Difference]: Without dead ends: 268 [2020-12-01 15:16:33,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-12-01 15:16:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-12-01 15:16:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 244. [2020-12-01 15:16:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-12-01 15:16:33,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 268 transitions. [2020-12-01 15:16:33,788 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 268 transitions. Word has length 81 [2020-12-01 15:16:33,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:33,789 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 268 transitions. [2020-12-01 15:16:33,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:16:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 268 transitions. [2020-12-01 15:16:33,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 15:16:33,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:33,791 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:34,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-01 15:16:34,006 INFO L429 AbstractCegarLoop]: === Iteration 34 === [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]=== [2020-12-01 15:16:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:34,006 INFO L82 PathProgramCache]: Analyzing trace with hash 724689820, now seen corresponding path program 9 times [2020-12-01 15:16:34,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:34,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61596417] [2020-12-01 15:16:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:34,011 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:34,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364688792] [2020-12-01 15:16:34,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:34,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-01 15:16:34,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:34,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:16:34,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:34,270 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:34,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:34,274 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:34,276 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:34,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:34,327 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:34,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:34,331 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 40 proven. 104 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-01 15:16:34,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61596417] [2020-12-01 15:16:34,390 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:34,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364688792] [2020-12-01 15:16:34,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:34,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-01 15:16:34,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631517132] [2020-12-01 15:16:34,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 15:16:34,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:34,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 15:16:34,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:16:34,392 INFO L87 Difference]: Start difference. First operand 244 states and 268 transitions. Second operand 13 states. [2020-12-01 15:16:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:34,783 INFO L93 Difference]: Finished difference Result 302 states and 327 transitions. [2020-12-01 15:16:34,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-01 15:16:34,783 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-12-01 15:16:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:34,785 INFO L225 Difference]: With dead ends: 302 [2020-12-01 15:16:34,785 INFO L226 Difference]: Without dead ends: 271 [2020-12-01 15:16:34,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-12-01 15:16:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-12-01 15:16:34,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 235. [2020-12-01 15:16:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-12-01 15:16:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 256 transitions. [2020-12-01 15:16:34,810 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 256 transitions. Word has length 81 [2020-12-01 15:16:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:34,811 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 256 transitions. [2020-12-01 15:16:34,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 15:16:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 256 transitions. [2020-12-01 15:16:34,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 15:16:34,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:34,812 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:35,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-01 15:16:35,026 INFO L429 AbstractCegarLoop]: === Iteration 35 === [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]=== [2020-12-01 15:16:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash 667431518, now seen corresponding path program 10 times [2020-12-01 15:16:35,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:35,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488981567] [2020-12-01 15:16:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:35,032 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:35,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387007907] [2020-12-01 15:16:35,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:35,475 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 15:16:35,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:35,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:16:35,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 87 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-01 15:16:35,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488981567] [2020-12-01 15:16:35,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:35,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387007907] [2020-12-01 15:16:35,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:35,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:16:35,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153038399] [2020-12-01 15:16:35,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:35,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:35,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:35,556 INFO L87 Difference]: Start difference. First operand 235 states and 256 transitions. Second operand 6 states. [2020-12-01 15:16:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:35,639 INFO L93 Difference]: Finished difference Result 243 states and 263 transitions. [2020-12-01 15:16:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:35,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-01 15:16:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:35,641 INFO L225 Difference]: With dead ends: 243 [2020-12-01 15:16:35,641 INFO L226 Difference]: Without dead ends: 161 [2020-12-01 15:16:35,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:35,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-01 15:16:35,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-12-01 15:16:35,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-01 15:16:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2020-12-01 15:16:35,665 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 81 [2020-12-01 15:16:35,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:35,665 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2020-12-01 15:16:35,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:35,666 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2020-12-01 15:16:35,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-01 15:16:35,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:35,667 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:35,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-01 15:16:35,872 INFO L429 AbstractCegarLoop]: === Iteration 36 === [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]=== [2020-12-01 15:16:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:35,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1478726736, now seen corresponding path program 11 times [2020-12-01 15:16:35,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:35,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252587921] [2020-12-01 15:16:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:35,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:35,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599384349] [2020-12-01 15:16:35,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:36,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-01 15:16:36,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:36,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-01 15:16:36,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:36,147 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:36,150 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:36,152 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:36,154 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:36,238 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:36,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:36,246 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:36,248 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:36,340 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:36,346 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:16:36,348 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:16:36,350 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:16:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 34 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:36,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252587921] [2020-12-01 15:16:36,421 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:36,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599384349] [2020-12-01 15:16:36,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:16:36,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-01 15:16:36,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977299274] [2020-12-01 15:16:36,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-01 15:16:36,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:16:36,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-01 15:16:36,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:16:36,423 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand 16 states. [2020-12-01 15:16:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:36,884 INFO L93 Difference]: Finished difference Result 272 states and 293 transitions. [2020-12-01 15:16:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-01 15:16:36,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-12-01 15:16:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:36,887 INFO L225 Difference]: With dead ends: 272 [2020-12-01 15:16:36,887 INFO L226 Difference]: Without dead ends: 257 [2020-12-01 15:16:36,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-12-01 15:16:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-12-01 15:16:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 221. [2020-12-01 15:16:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-01 15:16:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 244 transitions. [2020-12-01 15:16:36,913 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 244 transitions. Word has length 82 [2020-12-01 15:16:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:36,913 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 244 transitions. [2020-12-01 15:16:36,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-01 15:16:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 244 transitions. [2020-12-01 15:16:36,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-01 15:16:36,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:36,915 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:37,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-01 15:16:37,130 INFO L429 AbstractCegarLoop]: === Iteration 37 === [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]=== [2020-12-01 15:16:37,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1421468434, now seen corresponding path program 12 times [2020-12-01 15:16:37,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:16:37,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878466985] [2020-12-01 15:16:37,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:16:37,138 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:16:37,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801936784] [2020-12-01 15:16:37,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:16:37,290 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-01 15:16:37,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:16:37,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-01 15:16:37,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:37,667 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 15:16:37,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878466985] [2020-12-01 15:16:37,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:16:37,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801936784] [2020-12-01 15:16:37,668 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: cannot handle proper monomial [2020-12-01 15:16:37,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:37,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 15:16:37,669 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-01 15:16:37,669 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:16:37,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-01 15:16:37,894 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 15:16:37,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:16:37 BoogieIcfgContainer [2020-12-01 15:16:37,895 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:16:37,895 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:16:37,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:16:37,895 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:16:37,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:13" (3/4) ... [2020-12-01 15:16:37,898 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:16:37,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:16:37,900 INFO L168 Benchmark]: Toolchain (without parser) took 25145.49 ms. Allocated memory was 102.8 MB in the beginning and 226.5 MB in the end (delta: 123.7 MB). Free memory was 75.5 MB in the beginning and 70.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 128.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:37,900 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 102.8 MB. Free memory is still 60.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:37,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.32 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 79.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:37,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.77 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:37,901 INFO L168 Benchmark]: Boogie Preprocessor took 23.54 ms. Allocated memory is still 102.8 MB. Free memory was 78.0 MB in the beginning and 76.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:37,901 INFO L168 Benchmark]: RCFGBuilder took 352.40 ms. Allocated memory is still 102.8 MB. Free memory was 76.7 MB in the beginning and 60.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:37,902 INFO L168 Benchmark]: TraceAbstraction took 24470.08 ms. Allocated memory was 102.8 MB in the beginning and 226.5 MB in the end (delta: 123.7 MB). Free memory was 60.5 MB in the beginning and 70.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:37,902 INFO L168 Benchmark]: Witness Printer took 3.43 ms. Allocated memory is still 226.5 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:37,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 102.8 MB. Free memory is still 60.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.32 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 79.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.77 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.54 ms. Allocated memory is still 102.8 MB. Free memory was 78.0 MB in the beginning and 76.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 352.40 ms. Allocated memory is still 102.8 MB. Free memory was 76.7 MB in the beginning and 60.8 MB in the end (delta: 15.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24470.08 ms. Allocated memory was 102.8 MB in the beginning and 226.5 MB in the end (delta: 123.7 MB). Free memory was 60.5 MB in the beginning and 70.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 115.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.43 ms. Allocated memory is still 226.5 MB. Free memory is still 70.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] int 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 [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p [L34] EXPR counter++ [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L38] COND TRUE !(r >= d) [L44] EXPR counter++ [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p [L44] EXPR counter++ [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND FALSE !(r >= d) [L44] EXPR counter++ [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND FALSE !(r >= d) [L44] EXPR counter++ [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND FALSE !(r >= d) [L44] EXPR counter++ [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p [L44] EXPR counter++ [L44] COND FALSE !(counter++<10) [L15] COND TRUE !(cond) [L8] __assert_fail("0", "hard2.c", 8, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 24.3s, OverallIterations: 37, TraceHistogramMax: 8, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1161 SDtfs, 1850 SDslu, 4494 SDs, 0 SdLazy, 3241 SolverSat, 614 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1568 GetRequests, 1247 SyntacticMatches, 2 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 36 MinimizatonAttempts, 353 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1514 NumberOfCodeBlocks, 1423 NumberOfCodeBlocksAsserted, 77 NumberOfCheckSat, 1478 ConstructedInterpolants, 0 QuantifiedInterpolants, 400529 SizeOfPredicates, 198 NumberOfNonLiveVariables, 5630 ConjunctsInSsa, 669 ConjunctsInUnsatCore, 36 InterpolantComputations, 7 PerfectInterpolantSequences, 669/1975 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 15:16:40,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:16:40,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:16:40,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:16:40,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:16:40,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:16:40,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:16:40,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:16:40,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:16:40,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:16:40,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:16:40,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:16:40,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:16:40,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:16:40,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:16:40,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:16:40,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:16:40,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:16:40,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:16:40,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:16:40,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:16:40,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:16:40,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:16:40,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:16:40,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:16:40,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:16:40,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:16:40,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:16:40,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:16:40,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:16:40,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:16:40,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:16:40,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:16:40,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:16:40,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:16:40,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:16:40,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:16:40,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:16:40,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:16:40,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:16:40,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:16:40,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:16:40,519 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:16:40,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:16:40,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:16:40,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:16:40,523 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:16:40,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:16:40,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:16:40,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:16:40,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:16:40,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:16:40,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:16:40,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:16:40,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:16:40,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:16:40,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:16:40,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:16:40,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:16:40,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:16:40,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:16:40,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:16:40,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:16:40,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:16:40,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:16:40,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:16:40,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:16:40,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:16:40,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:16:40,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:16:40,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:16:40,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:16:40,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:16:40,530 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dab7aa1785f99b41e292299a6d5b4f844b78f4 [2020-12-01 15:16:40,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:16:40,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:16:40,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:16:40,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:16:40,985 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:16:40,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-01 15:16:41,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/a0dbb6a62/b9641aa2d1dd4f11af662305667f979e/FLAGf9e2b8ae4 [2020-12-01 15:16:41,532 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:16:41,533 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-01 15:16:41,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/a0dbb6a62/b9641aa2d1dd4f11af662305667f979e/FLAGf9e2b8ae4 [2020-12-01 15:16:41,890 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/data/a0dbb6a62/b9641aa2d1dd4f11af662305667f979e [2020-12-01 15:16:41,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:16:41,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:16:41,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:16:41,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:16:41,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:16:41,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:16:41" (1/1) ... [2020-12-01 15:16:41,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413a1f23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:41, skipping insertion in model container [2020-12-01 15:16:41,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:16:41" (1/1) ... [2020-12-01 15:16:41,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:16:41,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:16:42,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:16:42,158 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:16:42,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:16:42,214 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:16:42,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42 WrapperNode [2020-12-01 15:16:42,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:16:42,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:16:42,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:16:42,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:16:42,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:16:42,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:16:42,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:16:42,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:16:42,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... [2020-12-01 15:16:42,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:16:42,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:16:42,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:16:42,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:16:42,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/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 [2020-12-01 15:16:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:16:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:16:42,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:16:42,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:16:42,901 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:16:42,902 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-01 15:16:42,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:42 BoogieIcfgContainer [2020-12-01 15:16:42,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:16:42,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:16:42,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:16:42,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:16:42,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:16:41" (1/3) ... [2020-12-01 15:16:42,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1355a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:16:42, skipping insertion in model container [2020-12-01 15:16:42,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:16:42" (2/3) ... [2020-12-01 15:16:42,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1355a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:16:42, skipping insertion in model container [2020-12-01 15:16:42,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:42" (3/3) ... [2020-12-01 15:16:42,915 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound10.c [2020-12-01 15:16:42,932 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:16:42,935 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 15:16:42,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 15:16:42,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:16:42,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:16:42,989 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:16:42,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:16:42,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:16:42,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:16:42,990 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:16:42,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:16:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-01 15:16:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 15:16:43,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:43,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 15:16:43,014 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]=== [2020-12-01 15:16:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:43,020 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-01 15:16:43,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:43,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079436935] [2020-12-01 15:16:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:43,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:16:43,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:43,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:43,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079436935] [2020-12-01 15:16:43,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:43,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 15:16:43,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079013106] [2020-12-01 15:16:43,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:43,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:43,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:43,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:43,328 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-12-01 15:16:43,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:43,632 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-01 15:16:43,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:43,634 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-01 15:16:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:43,642 INFO L225 Difference]: With dead ends: 102 [2020-12-01 15:16:43,643 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 15:16:43,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:43,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 15:16:43,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-01 15:16:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 15:16:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-01 15:16:43,680 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-01 15:16:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:43,681 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-01 15:16:43,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-01 15:16:43,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:16:43,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:43,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:43,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:16:43,897 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]=== [2020-12-01 15:16:43,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:43,898 INFO L82 PathProgramCache]: Analyzing trace with hash 179013485, now seen corresponding path program 1 times [2020-12-01 15:16:43,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:43,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482803831] [2020-12-01 15:16:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:43,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:16:43,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:43,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:44,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482803831] [2020-12-01 15:16:44,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:44,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-01 15:16:44,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086351065] [2020-12-01 15:16:44,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:44,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:44,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:44,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:44,025 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-01 15:16:44,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:44,078 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-12-01 15:16:44,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:44,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-01 15:16:44,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:44,081 INFO L225 Difference]: With dead ends: 67 [2020-12-01 15:16:44,081 INFO L226 Difference]: Without dead ends: 48 [2020-12-01 15:16:44,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:44,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-01 15:16:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2020-12-01 15:16:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 15:16:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2020-12-01 15:16:44,093 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 8 [2020-12-01 15:16:44,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:44,093 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2020-12-01 15:16:44,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:44,094 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2020-12-01 15:16:44,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:16:44,094 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:44,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:44,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:16:44,309 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]=== [2020-12-01 15:16:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-12-01 15:16:44,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:44,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121972696] [2020-12-01 15:16:44,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:44,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 15:16:44,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:44,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:44,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:44,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121972696] [2020-12-01 15:16:44,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:44,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2020-12-01 15:16:44,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623349572] [2020-12-01 15:16:44,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:44,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:44,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:44,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:44,447 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 5 states. [2020-12-01 15:16:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:44,699 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-12-01 15:16:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:16:44,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-01 15:16:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:44,701 INFO L225 Difference]: With dead ends: 62 [2020-12-01 15:16:44,701 INFO L226 Difference]: Without dead ends: 60 [2020-12-01 15:16:44,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:16:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-01 15:16:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2020-12-01 15:16:44,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-01 15:16:44,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-12-01 15:16:44,711 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 8 [2020-12-01 15:16:44,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:44,712 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-12-01 15:16:44,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:44,712 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-12-01 15:16:44,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:16:44,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:44,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:44,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:16:44,927 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]=== [2020-12-01 15:16:44,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:44,927 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-12-01 15:16:44,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:44,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374321519] [2020-12-01 15:16:44,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:44,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:16:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:45,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:45,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374321519] [2020-12-01 15:16:45,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:45,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 15:16:45,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377888719] [2020-12-01 15:16:45,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:16:45,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:16:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:16:45,235 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 6 states. [2020-12-01 15:16:48,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:48,097 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2020-12-01 15:16:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:16:48,099 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 15:16:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:48,100 INFO L225 Difference]: With dead ends: 104 [2020-12-01 15:16:48,100 INFO L226 Difference]: Without dead ends: 81 [2020-12-01 15:16:48,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:16:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-01 15:16:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2020-12-01 15:16:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-01 15:16:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2020-12-01 15:16:48,113 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 10 [2020-12-01 15:16:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:48,114 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2020-12-01 15:16:48,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:16:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2020-12-01 15:16:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:16:48,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:16:48,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:16:48,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:16:48,318 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]=== [2020-12-01 15:16:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:16:48,319 INFO L82 PathProgramCache]: Analyzing trace with hash 2079564058, now seen corresponding path program 1 times [2020-12-01 15:16:48,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:16:48,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613668848] [2020-12-01 15:16:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-01 15:16:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:16:48,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 15:16:48,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:16:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:48,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:16:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:16:48,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613668848] [2020-12-01 15:16:48,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:16:48,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-12-01 15:16:48,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350292438] [2020-12-01 15:16:48,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:16:48,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:16:48,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:16:48,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:48,499 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand 5 states. [2020-12-01 15:16:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:16:48,501 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-12-01 15:16:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:16:48,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 15:16:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:16:48,502 INFO L225 Difference]: With dead ends: 60 [2020-12-01 15:16:48,502 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:16:48,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:16:48,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:16:48,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:16:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:16:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:16:48,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-01 15:16:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:16:48,504 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:16:48,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:16:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:16:48,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:16:48,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:16:48,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:16:48,803 INFO L258 CegarLoopResult]: At program point L60(lines 23 61) the Hoare annotation is: (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) [2020-12-01 15:16:48,804 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,804 INFO L262 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-01 15:16:48,805 INFO L262 CegarLoopResult]: For program point L52-2(lines 23 61) no Hoare annotation was computed. [2020-12-01 15:16:48,805 INFO L262 CegarLoopResult]: For program point L44(lines 44 56) no Hoare annotation was computed. [2020-12-01 15:16:48,805 INFO L262 CegarLoopResult]: For program point L44-2(lines 44 56) no Hoare annotation was computed. [2020-12-01 15:16:48,806 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,806 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:16:48,806 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:16:48,807 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,807 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,808 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,808 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,808 INFO L258 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: false [2020-12-01 15:16:48,808 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,808 INFO L258 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: false [2020-12-01 15:16:48,809 INFO L262 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,809 INFO L258 CegarLoopResult]: At program point L15-5(line 38) the Hoare annotation is: false [2020-12-01 15:16:48,809 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,810 INFO L258 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: false [2020-12-01 15:16:48,810 INFO L262 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,810 INFO L258 CegarLoopResult]: At program point L15-9(line 48) the Hoare annotation is: false [2020-12-01 15:16:48,817 INFO L262 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,817 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= (_ bv1 32) ULTIMATE.start_main_~p~0) (= (_ bv1 32) ULTIMATE.start_main_~B~0)) [2020-12-01 15:16:48,817 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:16:48,817 INFO L258 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) [2020-12-01 15:16:48,817 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,818 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,819 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:16:48,819 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:16:48,820 INFO L262 CegarLoopResult]: For program point L34-1(lines 34 42) no Hoare annotation was computed. [2020-12-01 15:16:48,820 INFO L258 CegarLoopResult]: At program point L34-3(lines 34 42) the Hoare annotation is: false [2020-12-01 15:16:48,820 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:16:48,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:16:48 BoogieIcfgContainer [2020-12-01 15:16:48,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:16:48,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:16:48,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:16:48,839 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:16:48,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:16:42" (3/4) ... [2020-12-01 15:16:48,843 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:16:48,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:16:48,855 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:16:48,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:16:48,856 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:16:48,904 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3ff662b9-83d8-489f-b1c1-616e542f3498/bin/uautomizer/witness.graphml [2020-12-01 15:16:48,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:16:48,905 INFO L168 Benchmark]: Toolchain (without parser) took 7009.25 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 35.6 MB in the beginning and 44.1 MB in the end (delta: -8.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:48,906 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:48,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.70 ms. Allocated memory is still 56.6 MB. Free memory was 35.3 MB in the beginning and 25.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:48,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.83 ms. Allocated memory is still 56.6 MB. Free memory was 25.2 MB in the beginning and 39.6 MB in the end (delta: -14.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:48,907 INFO L168 Benchmark]: Boogie Preprocessor took 39.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:16:48,908 INFO L168 Benchmark]: RCFGBuilder took 554.78 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 38.2 MB in the beginning and 54.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:48,908 INFO L168 Benchmark]: TraceAbstraction took 5931.69 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 53.7 MB in the beginning and 47.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:48,909 INFO L168 Benchmark]: Witness Printer took 65.10 ms. Allocated memory is still 88.1 MB. Free memory was 47.0 MB in the beginning and 44.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:16:48,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 56.6 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.70 ms. Allocated memory is still 56.6 MB. Free memory was 35.3 MB in the beginning and 25.2 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.83 ms. Allocated memory is still 56.6 MB. Free memory was 25.2 MB in the beginning and 39.6 MB in the end (delta: -14.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 554.78 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 38.2 MB in the beginning and 54.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5931.69 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 53.7 MB in the beginning and 47.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.10 ms. Allocated memory is still 88.1 MB. Free memory was 47.0 MB in the beginning and 44.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: !(cond == 0bv32) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(cond == 0bv32) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((!(cond == 0bv32) && d == B) && 1bv32 == p) && 1bv32 == B - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 181 SDslu, 250 SDs, 0 SdLazy, 147 SolverSat, 66 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 69 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 28 HoareAnnotationTreeSize, 9 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2702 SizeOfPredicates, 15 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...