./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/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 40c038cfd8d3f3338969cc5f73679c75f790320b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:04:28,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:04:28,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:04:28,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:04:28,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:04:28,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:04:28,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:04:28,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:04:28,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:04:28,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:04:28,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:04:28,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:04:28,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:04:28,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:04:28,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:04:28,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:04:28,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:04:28,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:04:28,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:04:28,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:04:28,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:04:28,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:04:28,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:04:28,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:04:28,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:04:28,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:04:28,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:04:28,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:04:28,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:04:28,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:04:28,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:04:28,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:04:28,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:04:28,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:04:28,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:04:28,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:04:28,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:04:28,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:04:28,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:04:28,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:04:28,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:04:28,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:04:28,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:04:28,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:04:28,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:04:28,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:04:28,633 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:04:28,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:04:28,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:04:28,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:04:28,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:04:28,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:04:28,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:04:28,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:04:28,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:04:28,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:04:28,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:04:28,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:04:28,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:04:28,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:04:28,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:04:28,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:04:28,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:04:28,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:04:28,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:04:28,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:04:28,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:04:28,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:04:28,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:04:28,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:04:28,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:04:28,640 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_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c038cfd8d3f3338969cc5f73679c75f790320b [2020-11-29 19:04:28,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:04:28,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:04:28,915 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:04:28,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:04:28,921 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:04:28,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c [2020-11-29 19:04:29,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/data/a94f0d8e7/268871a8bcd84fb4a5b2e1fa621b8fbd/FLAG2b7c11829 [2020-11-29 19:04:29,446 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:04:29,447 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c [2020-11-29 19:04:29,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/data/a94f0d8e7/268871a8bcd84fb4a5b2e1fa621b8fbd/FLAG2b7c11829 [2020-11-29 19:04:29,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/data/a94f0d8e7/268871a8bcd84fb4a5b2e1fa621b8fbd [2020-11-29 19:04:29,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:04:29,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:04:29,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:29,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:04:29,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:04:29,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:29" (1/1) ... [2020-11-29 19:04:29,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a202e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:29, skipping insertion in model container [2020-11-29 19:04:29,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:29" (1/1) ... [2020-11-29 19:04:29,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:04:29,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:04:30,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:30,047 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:04:30,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:30,081 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:04:30,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30 WrapperNode [2020-11-29 19:04:30,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:30,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:30,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:04:30,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:04:30,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:30,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:04:30,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:04:30,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:04:30,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... [2020-11-29 19:04:30,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:04:30,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:04:30,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:04:30,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:04:30,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:04:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:04:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:04:30,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:04:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:04:30,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:04:30,567 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-11-29 19:04:30,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:30 BoogieIcfgContainer [2020-11-29 19:04:30,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:04:30,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:04:30,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:04:30,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:04:30,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:04:29" (1/3) ... [2020-11-29 19:04:30,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd03558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:30, skipping insertion in model container [2020-11-29 19:04:30,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:30" (2/3) ... [2020-11-29 19:04:30,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd03558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:04:30, skipping insertion in model container [2020-11-29 19:04:30,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:30" (3/3) ... [2020-11-29 19:04:30,577 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound2.c [2020-11-29 19:04:30,588 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:04:30,592 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 19:04:30,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 19:04:30,631 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:04:30,632 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:04:30,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:04:30,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:04:30,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:04:30,632 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:04:30,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:04:30,633 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:04:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 19:04:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:04:30,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:30,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:30,652 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-11-29 19:04:30,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:30,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833521632] [2020-11-29 19:04:30,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:30,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833521632] [2020-11-29 19:04:30,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:30,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:04:30,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53877227] [2020-11-29 19:04:30,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:04:30,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:30,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:04:30,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:04:30,830 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 19:04:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:30,865 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-11-29 19:04:30,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:04:30,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:04:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:30,881 INFO L225 Difference]: With dead ends: 79 [2020-11-29 19:04:30,890 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 19:04:30,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:04:30,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 19:04:30,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 19:04:30,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 19:04:30,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-11-29 19:04:30,940 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2020-11-29 19:04:30,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:30,940 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-11-29 19:04:30,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:04:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-29 19:04:30,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:04:30,941 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:30,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:30,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:04:30,942 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-29 19:04:30,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:30,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691621339] [2020-11-29 19:04:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:30,968 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:30,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636519719] [2020-11-29 19:04:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:31,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:04:31,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:31,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691621339] [2020-11-29 19:04:31,190 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:31,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636519719] [2020-11-29 19:04:31,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:31,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:04:31,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696082835] [2020-11-29 19:04:31,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:04:31,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:31,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:31,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:31,194 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-11-29 19:04:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:31,357 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-29 19:04:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:04:31,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:04:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:31,361 INFO L225 Difference]: With dead ends: 68 [2020-11-29 19:04:31,361 INFO L226 Difference]: Without dead ends: 64 [2020-11-29 19:04:31,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:31,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-29 19:04:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2020-11-29 19:04:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 19:04:31,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-11-29 19:04:31,373 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 10 [2020-11-29 19:04:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:31,373 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-11-29 19:04:31,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:04:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-11-29 19:04:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:04:31,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:31,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:31,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:04:31,592 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:31,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:31,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1507399260, now seen corresponding path program 1 times [2020-11-29 19:04:31,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:31,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794496837] [2020-11-29 19:04:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:31,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794496837] [2020-11-29 19:04:31,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:31,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:04:31,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527352433] [2020-11-29 19:04:31,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:04:31,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:31,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:31,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:31,684 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 4 states. [2020-11-29 19:04:31,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:31,716 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-11-29 19:04:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:04:31,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 19:04:31,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:31,717 INFO L225 Difference]: With dead ends: 65 [2020-11-29 19:04:31,718 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:04:31,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:04:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-29 19:04:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-29 19:04:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-11-29 19:04:31,727 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 11 [2020-11-29 19:04:31,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:31,727 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-11-29 19:04:31,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:04:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-11-29 19:04:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:04:31,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:31,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:31,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:04:31,729 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:31,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:31,730 INFO L82 PathProgramCache]: Analyzing trace with hash 515848209, now seen corresponding path program 1 times [2020-11-29 19:04:31,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:31,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325716841] [2020-11-29 19:04:31,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:31,747 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:31,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577569083] [2020-11-29 19:04:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:31,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:04:31,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:31,864 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:04:31,864 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:04:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:31,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325716841] [2020-11-29 19:04:31,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:31,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577569083] [2020-11-29 19:04:31,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:31,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:04:31,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519895657] [2020-11-29 19:04:31,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:04:31,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:31,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:04:31,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:04:31,924 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 6 states. [2020-11-29 19:04:32,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:32,158 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-11-29 19:04:32,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:04:32,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-29 19:04:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:32,159 INFO L225 Difference]: With dead ends: 82 [2020-11-29 19:04:32,159 INFO L226 Difference]: Without dead ends: 80 [2020-11-29 19:04:32,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:04:32,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-29 19:04:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-11-29 19:04:32,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 19:04:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-11-29 19:04:32,179 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2020-11-29 19:04:32,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:32,179 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-11-29 19:04:32,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:04:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-11-29 19:04:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 19:04:32,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:32,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:32,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:32,396 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1809076980, now seen corresponding path program 1 times [2020-11-29 19:04:32,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:32,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455320461] [2020-11-29 19:04:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:32,415 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:32,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523960970] [2020-11-29 19:04:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:32,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:04:32,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455320461] [2020-11-29 19:04:32,523 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:32,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523960970] [2020-11-29 19:04:32,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:32,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:04:32,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030119495] [2020-11-29 19:04:32,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:04:32,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:32,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:32,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:32,525 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 4 states. [2020-11-29 19:04:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:32,656 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-11-29 19:04:32,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:04:32,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 19:04:32,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:32,662 INFO L225 Difference]: With dead ends: 97 [2020-11-29 19:04:32,662 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 19:04:32,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 19:04:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2020-11-29 19:04:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-29 19:04:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2020-11-29 19:04:32,673 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 14 [2020-11-29 19:04:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:32,673 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2020-11-29 19:04:32,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:04:32,673 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2020-11-29 19:04:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:04:32,674 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:32,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:32,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:32,875 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:32,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:32,875 INFO L82 PathProgramCache]: Analyzing trace with hash 968565783, now seen corresponding path program 1 times [2020-11-29 19:04:32,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:32,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909433313] [2020-11-29 19:04:32,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:32,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:32,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666448868] [2020-11-29 19:04:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:32,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:04:32,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:32,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909433313] [2020-11-29 19:04:32,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:32,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666448868] [2020-11-29 19:04:32,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:32,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:04:32,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774547086] [2020-11-29 19:04:32,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:04:32,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:32,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:32,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:32,990 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 4 states. [2020-11-29 19:04:33,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:33,095 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-11-29 19:04:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:04:33,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 19:04:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:33,097 INFO L225 Difference]: With dead ends: 96 [2020-11-29 19:04:33,098 INFO L226 Difference]: Without dead ends: 94 [2020-11-29 19:04:33,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:33,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-29 19:04:33,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2020-11-29 19:04:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 19:04:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-11-29 19:04:33,117 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 17 [2020-11-29 19:04:33,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:33,118 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-11-29 19:04:33,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:04:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-11-29 19:04:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:04:33,119 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:33,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:33,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:33,324 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:33,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1215997382, now seen corresponding path program 1 times [2020-11-29 19:04:33,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:33,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399399081] [2020-11-29 19:04:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:33,335 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:33,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337561585] [2020-11-29 19:04:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:33,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:04:33,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:33,467 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:04:33,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:04:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:33,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399399081] [2020-11-29 19:04:33,507 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:33,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337561585] [2020-11-29 19:04:33,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:33,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:04:33,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51721100] [2020-11-29 19:04:33,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:04:33,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:33,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:04:33,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:04:33,509 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 6 states. [2020-11-29 19:04:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:33,829 INFO L93 Difference]: Finished difference Result 119 states and 135 transitions. [2020-11-29 19:04:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:04:33,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-29 19:04:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:33,831 INFO L225 Difference]: With dead ends: 119 [2020-11-29 19:04:33,831 INFO L226 Difference]: Without dead ends: 111 [2020-11-29 19:04:33,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:04:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-29 19:04:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-11-29 19:04:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 19:04:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-11-29 19:04:33,850 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 19 [2020-11-29 19:04:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:33,850 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-11-29 19:04:33,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:04:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-11-29 19:04:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:04:33,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:33,851 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:34,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 19:04:34,052 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:34,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:34,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1167171917, now seen corresponding path program 1 times [2020-11-29 19:04:34,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:34,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102901497] [2020-11-29 19:04:34,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:34,064 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:34,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114352868] [2020-11-29 19:04:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:34,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:04:34,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:04:34,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102901497] [2020-11-29 19:04:34,164 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:34,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114352868] [2020-11-29 19:04:34,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:34,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:04:34,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719361540] [2020-11-29 19:04:34,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:04:34,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:34,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:34,166 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 4 states. [2020-11-29 19:04:34,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:34,304 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-11-29 19:04:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:04:34,309 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 19:04:34,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:34,310 INFO L225 Difference]: With dead ends: 83 [2020-11-29 19:04:34,310 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 19:04:34,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:34,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 19:04:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2020-11-29 19:04:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 19:04:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-11-29 19:04:34,327 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2020-11-29 19:04:34,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:34,327 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-11-29 19:04:34,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:04:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-11-29 19:04:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 19:04:34,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:34,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:34,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:34,549 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:34,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:34,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1165324875, now seen corresponding path program 1 times [2020-11-29 19:04:34,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:34,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082305687] [2020-11-29 19:04:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:34,571 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:34,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420446198] [2020-11-29 19:04:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:34,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:04:34,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:04:34,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082305687] [2020-11-29 19:04:34,687 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:34,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420446198] [2020-11-29 19:04:34,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:34,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:04:34,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111644743] [2020-11-29 19:04:34,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:04:34,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:34,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:34,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:04:34,689 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 4 states. [2020-11-29 19:04:34,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:34,815 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-11-29 19:04:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:04:34,816 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-29 19:04:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:34,817 INFO L225 Difference]: With dead ends: 101 [2020-11-29 19:04:34,817 INFO L226 Difference]: Without dead ends: 97 [2020-11-29 19:04:34,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-29 19:04:34,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2020-11-29 19:04:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 19:04:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-11-29 19:04:34,836 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2020-11-29 19:04:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:34,836 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-11-29 19:04:34,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:04:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-11-29 19:04:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:04:34,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:34,837 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:35,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:35,038 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1822603905, now seen corresponding path program 1 times [2020-11-29 19:04:35,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:35,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553014159] [2020-11-29 19:04:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:35,048 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:35,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1229112274] [2020-11-29 19:04:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:35,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:04:35,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:35,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553014159] [2020-11-29 19:04:35,166 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:35,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229112274] [2020-11-29 19:04:35,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:35,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:04:35,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885891861] [2020-11-29 19:04:35,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:04:35,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:35,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:04:35,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:35,168 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 5 states. [2020-11-29 19:04:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:35,233 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-11-29 19:04:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:04:35,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-29 19:04:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:35,238 INFO L225 Difference]: With dead ends: 109 [2020-11-29 19:04:35,238 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 19:04:35,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:04:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 19:04:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-29 19:04:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 19:04:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-11-29 19:04:35,261 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2020-11-29 19:04:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:35,261 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-11-29 19:04:35,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:04:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-11-29 19:04:35,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 19:04:35,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:35,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:35,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 19:04:35,488 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:35,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:35,488 INFO L82 PathProgramCache]: Analyzing trace with hash -665561194, now seen corresponding path program 1 times [2020-11-29 19:04:35,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:35,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578953468] [2020-11-29 19:04:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:35,498 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:35,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810816432] [2020-11-29 19:04:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-29 19:04:35,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:35,597 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:04:35,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:04:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:35,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578953468] [2020-11-29 19:04:35,746 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:35,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810816432] [2020-11-29 19:04:35,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:35,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:04:35,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164435888] [2020-11-29 19:04:35,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:04:35,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:35,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:04:35,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:04:35,747 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 8 states. [2020-11-29 19:04:36,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:36,201 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-11-29 19:04:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:04:36,204 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-29 19:04:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:36,205 INFO L225 Difference]: With dead ends: 133 [2020-11-29 19:04:36,205 INFO L226 Difference]: Without dead ends: 131 [2020-11-29 19:04:36,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:04:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-29 19:04:36,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-11-29 19:04:36,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-29 19:04:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-11-29 19:04:36,217 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2020-11-29 19:04:36,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:36,217 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-11-29 19:04:36,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:04:36,217 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-11-29 19:04:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:04:36,218 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:36,218 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:36,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:36,439 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:36,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1026065211, now seen corresponding path program 1 times [2020-11-29 19:04:36,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:36,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573165366] [2020-11-29 19:04:36,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:36,449 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:36,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617994905] [2020-11-29 19:04:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:36,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-29 19:04:36,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:36,527 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:04:36,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:04:36,556 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:04:36,556 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:04:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:36,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573165366] [2020-11-29 19:04:36,675 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:36,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617994905] [2020-11-29 19:04:36,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:36,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 19:04:36,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029554421] [2020-11-29 19:04:36,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:04:36,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:36,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:04:36,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:04:36,677 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 9 states. [2020-11-29 19:04:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:37,248 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-11-29 19:04:37,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:04:37,249 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-29 19:04:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:37,250 INFO L225 Difference]: With dead ends: 148 [2020-11-29 19:04:37,250 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 19:04:37,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:04:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 19:04:37,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2020-11-29 19:04:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-29 19:04:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-11-29 19:04:37,264 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2020-11-29 19:04:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:37,264 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-11-29 19:04:37,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:04:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-11-29 19:04:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 19:04:37,265 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:37,266 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:37,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:37,479 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:37,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1002495632, now seen corresponding path program 1 times [2020-11-29 19:04:37,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:37,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844058130] [2020-11-29 19:04:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:37,489 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:37,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171787740] [2020-11-29 19:04:37,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:37,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:04:37,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:37,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844058130] [2020-11-29 19:04:37,667 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:04:37,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171787740] [2020-11-29 19:04:37,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:37,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:04:37,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757231675] [2020-11-29 19:04:37,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:04:37,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:37,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:04:37,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:04:37,668 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 6 states. [2020-11-29 19:04:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:37,708 INFO L93 Difference]: Finished difference Result 164 states and 196 transitions. [2020-11-29 19:04:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:04:37,710 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-29 19:04:37,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:04:37,712 INFO L225 Difference]: With dead ends: 164 [2020-11-29 19:04:37,713 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 19:04:37,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:04:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 19:04:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-29 19:04:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-29 19:04:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2020-11-29 19:04:37,722 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 28 [2020-11-29 19:04:37,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:04:37,722 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2020-11-29 19:04:37,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:04:37,722 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2020-11-29 19:04:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 19:04:37,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:04:37,729 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:04:37,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 19:04:37,951 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:04:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash 955322372, now seen corresponding path program 2 times [2020-11-29 19:04:37,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:37,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038985751] [2020-11-29 19:04:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:37,960 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:04:37,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [582890697] [2020-11-29 19:04:37,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:38,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:04:38,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 19:04:38,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:38,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:38,088 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:38,088 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:04:38,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 19:04:38,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:04:38 BoogieIcfgContainer [2020-11-29 19:04:38,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:04:38,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:04:38,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:04:38,346 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:04:38,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:30" (3/4) ... [2020-11-29 19:04:38,348 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:04:38,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c2f22380-801b-4143-a9b3-a31c2dbf8a5d/bin/uautomizer/witness.graphml [2020-11-29 19:04:38,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:04:38,433 INFO L168 Benchmark]: Toolchain (without parser) took 8623.79 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 57.8 MB in the beginning and 96.2 MB in the end (delta: -38.4 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:38,434 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:38,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.83 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 67.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:38,435 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 65.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:38,435 INFO L168 Benchmark]: Boogie Preprocessor took 24.37 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 64.9 MB in the end (delta: 983.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:38,436 INFO L168 Benchmark]: RCFGBuilder took 424.57 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 48.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:38,436 INFO L168 Benchmark]: TraceAbstraction took 7771.69 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 47.7 MB in the beginning and 99.3 MB in the end (delta: -51.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:38,436 INFO L168 Benchmark]: Witness Printer took 86.00 ms. Allocated memory is still 132.1 MB. Free memory was 99.3 MB in the beginning and 96.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:38,439 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 28.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.83 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 67.6 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.48 ms. Allocated memory is still 90.2 MB. Free memory was 67.6 MB in the beginning and 65.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.37 ms. Allocated memory is still 90.2 MB. Free memory was 65.8 MB in the beginning and 64.9 MB in the end (delta: 983.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 424.57 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 48.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7771.69 ms. Allocated memory was 90.2 MB in the beginning and 132.1 MB in the end (delta: 41.9 MB). Free memory was 47.7 MB in the beginning and 99.3 MB in the end (delta: -51.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 86.00 ms. Allocated memory is still 132.1 MB. Free memory was 99.3 MB in the beginning and 96.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(a != b)) VAL [counter=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND FALSE !(counter++<2) [L11] COND TRUE !(cond) VAL [counter=3] [L4] __assert_fail("0", "egcd-ll.c", 4, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 474 SDtfs, 681 SDslu, 741 SDs, 0 SdLazy, 670 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 174 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 252 NumberOfCodeBlocks, 252 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 26530 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1090 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 17/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...