./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_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/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 [2020-11-28 03:09:30,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:30,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:30,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:30,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:30,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:30,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:30,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:30,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:30,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:30,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:30,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:30,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:30,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:30,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:30,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:30,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:30,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:30,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:30,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:30,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:30,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:30,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:30,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:30,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:30,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:30,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:30,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:30,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:30,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:30,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:30,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:30,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:30,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:30,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:30,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:30,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:30,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:30,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:30,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:30,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:30,543 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:09:30,587 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:30,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:30,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:30,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:30,590 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:30,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:30,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:09:30,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:30,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:09:30,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:30,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:09:30,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:09:30,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:09:30,593 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:09:30,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:09:30,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:30,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:09:30,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:30,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:30,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:09:30,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:09:30,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:30,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:30,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:09:30,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:09:30,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:30,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:09:30,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:09:30,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:30,597 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_a94f867f-024f-48f5-95dc-0de47e9f4641/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c038cfd8d3f3338969cc5f73679c75f790320b [2020-11-28 03:09:30,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:30,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:30,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:30,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:30,923 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:30,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c [2020-11-28 03:09:31,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/data/a7f1b3cf1/b7ca61ef57564341bd56d8748b1bdd8e/FLAG114461da7 [2020-11-28 03:09:31,576 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:31,577 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c [2020-11-28 03:09:31,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/data/a7f1b3cf1/b7ca61ef57564341bd56d8748b1bdd8e/FLAG114461da7 [2020-11-28 03:09:31,956 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/data/a7f1b3cf1/b7ca61ef57564341bd56d8748b1bdd8e [2020-11-28 03:09:31,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:31,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:09:31,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:31,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:31,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:31,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:31" (1/1) ... [2020-11-28 03:09:31,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a71c14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:31, skipping insertion in model container [2020-11-28 03:09:31,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:31" (1/1) ... [2020-11-28 03:09:31,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:32,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:32,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:32,210 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:32,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:32,278 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:32,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32 WrapperNode [2020-11-28 03:09:32,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:32,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:32,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:09:32,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:09:32,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:32,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:32,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:32,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:32,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... [2020-11-28 03:09:32,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:32,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:32,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:32,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:32,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:32,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:32,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:32,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:32,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:33,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:33,045 INFO L298 CfgBuilder]: Removed 37 assume(true) statements. [2020-11-28 03:09:33,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:33 BoogieIcfgContainer [2020-11-28 03:09:33,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:33,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:09:33,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:09:33,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:09:33,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:31" (1/3) ... [2020-11-28 03:09:33,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d173c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:33, skipping insertion in model container [2020-11-28 03:09:33,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:32" (2/3) ... [2020-11-28 03:09:33,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d173c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:33, skipping insertion in model container [2020-11-28 03:09:33,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:33" (3/3) ... [2020-11-28 03:09:33,071 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound2.c [2020-11-28 03:09:33,083 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:09:33,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:09:33,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:09:33,126 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:09:33,126 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:09:33,126 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:09:33,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:33,127 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:33,127 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:09:33,127 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:33,127 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:09:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-28 03:09:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:33,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:33,189 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:33,190 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:33,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-11-28 03:09:33,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:33,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717599721] [2020-11-28 03:09:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:33,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717599721] [2020-11-28 03:09:33,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:33,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:33,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107587241] [2020-11-28 03:09:33,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:09:33,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:33,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:09:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:09:33,475 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-28 03:09:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:33,502 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-11-28 03:09:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:09:33,504 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:09:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:33,513 INFO L225 Difference]: With dead ends: 79 [2020-11-28 03:09:33,513 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:09:33,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:09:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:09:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:09:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:09:33,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-11-28 03:09:33,564 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2020-11-28 03:09:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:33,564 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-11-28 03:09:33,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:09:33,565 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-28 03:09:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:33,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:33,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:33,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:09:33,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:33,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-28 03:09:33,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:33,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088049582] [2020-11-28 03:09:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:33,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:33,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964597669] [2020-11-28 03:09:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:33,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:09:33,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:33,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:33,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088049582] [2020-11-28 03:09:33,806 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:33,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964597669] [2020-11-28 03:09:33,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:33,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:33,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766218190] [2020-11-28 03:09:33,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:33,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:33,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:33,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:33,812 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-11-28 03:09:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:34,051 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-28 03:09:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:34,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:09:34,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:34,055 INFO L225 Difference]: With dead ends: 68 [2020-11-28 03:09:34,055 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 03:09:34,056 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 [2020-11-28 03:09:34,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 03:09:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 51. [2020-11-28 03:09:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 03:09:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-11-28 03:09:34,070 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 10 [2020-11-28 03:09:34,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:34,070 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-11-28 03:09:34,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-11-28 03:09:34,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:09:34,072 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:34,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:34,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:09:34,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1507399260, now seen corresponding path program 1 times [2020-11-28 03:09:34,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:34,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911945070] [2020-11-28 03:09:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:34,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911945070] [2020-11-28 03:09:34,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:34,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:34,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205350994] [2020-11-28 03:09:34,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:34,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:34,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:34,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:34,390 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 4 states. [2020-11-28 03:09:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:34,435 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-11-28 03:09:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:34,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:09:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:34,438 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:09:34,439 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 03:09:34,439 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 [2020-11-28 03:09:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 03:09:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-28 03:09:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 03:09:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-11-28 03:09:34,456 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 11 [2020-11-28 03:09:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:34,457 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-11-28 03:09:34,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-11-28 03:09:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:09:34,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:34,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:34,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:09:34,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash 515848209, now seen corresponding path program 1 times [2020-11-28 03:09:34,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:34,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958417474] [2020-11-28 03:09:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:34,502 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:34,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923121792] [2020-11-28 03:09:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:34,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:09:34,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:34,622 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:34,626 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:34,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958417474] [2020-11-28 03:09:34,689 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:34,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923121792] [2020-11-28 03:09:34,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:34,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:09:34,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807077942] [2020-11-28 03:09:34,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:34,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:34,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:34,692 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 6 states. [2020-11-28 03:09:35,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:35,084 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-11-28 03:09:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:35,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 03:09:35,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:35,087 INFO L225 Difference]: With dead ends: 82 [2020-11-28 03:09:35,087 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:09:35,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:09:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2020-11-28 03:09:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:09:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-11-28 03:09:35,115 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 12 [2020-11-28 03:09:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:35,116 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-11-28 03:09:35,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-11-28 03:09:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:09:35,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:35,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:35,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:35,355 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1809076980, now seen corresponding path program 1 times [2020-11-28 03:09:35,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:35,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470785373] [2020-11-28 03:09:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:35,379 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:35,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476185988] [2020-11-28 03:09:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:35,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:09:35,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:35,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470785373] [2020-11-28 03:09:35,503 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:35,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476185988] [2020-11-28 03:09:35,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:35,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:35,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53029463] [2020-11-28 03:09:35,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:35,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:35,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:35,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:35,506 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 4 states. [2020-11-28 03:09:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:35,655 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2020-11-28 03:09:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:09:35,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:09:35,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:35,658 INFO L225 Difference]: With dead ends: 97 [2020-11-28 03:09:35,658 INFO L226 Difference]: Without dead ends: 89 [2020-11-28 03:09:35,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-28 03:09:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2020-11-28 03:09:35,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:09:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2020-11-28 03:09:35,673 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 14 [2020-11-28 03:09:35,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:35,673 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2020-11-28 03:09:35,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2020-11-28 03:09:35,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:09:35,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:35,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:35,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:35,899 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:35,899 INFO L82 PathProgramCache]: Analyzing trace with hash 968565783, now seen corresponding path program 1 times [2020-11-28 03:09:35,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:35,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130799543] [2020-11-28 03:09:35,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:35,914 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:35,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [409683761] [2020-11-28 03:09:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:35,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:09:35,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:36,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:36,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130799543] [2020-11-28 03:09:36,017 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:36,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409683761] [2020-11-28 03:09:36,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:36,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:09:36,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715825819] [2020-11-28 03:09:36,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:36,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:36,020 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand 4 states. [2020-11-28 03:09:36,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:36,138 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-11-28 03:09:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:36,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-28 03:09:36,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:36,142 INFO L225 Difference]: With dead ends: 96 [2020-11-28 03:09:36,142 INFO L226 Difference]: Without dead ends: 94 [2020-11-28 03:09:36,143 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 [2020-11-28 03:09:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-28 03:09:36,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2020-11-28 03:09:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 03:09:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2020-11-28 03:09:36,167 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 17 [2020-11-28 03:09:36,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:36,167 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2020-11-28 03:09:36,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2020-11-28 03:09:36,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:09:36,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:36,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:36,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:36,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:36,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:36,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1215997382, now seen corresponding path program 1 times [2020-11-28 03:09:36,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:36,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541683980] [2020-11-28 03:09:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:36,402 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:36,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607605046] [2020-11-28 03:09:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:36,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:09:36,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:36,497 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:36,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:36,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541683980] [2020-11-28 03:09:36,542 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:36,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607605046] [2020-11-28 03:09:36,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:36,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:09:36,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323036871] [2020-11-28 03:09:36,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:36,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:36,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:36,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:36,545 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand 6 states. [2020-11-28 03:09:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:36,911 INFO L93 Difference]: Finished difference Result 119 states and 135 transitions. [2020-11-28 03:09:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:09:36,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-11-28 03:09:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:36,913 INFO L225 Difference]: With dead ends: 119 [2020-11-28 03:09:36,914 INFO L226 Difference]: Without dead ends: 111 [2020-11-28 03:09:36,914 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 [2020-11-28 03:09:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-11-28 03:09:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2020-11-28 03:09:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:09:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-11-28 03:09:36,942 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 19 [2020-11-28 03:09:36,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:36,942 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-11-28 03:09:36,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-11-28 03:09:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:09:36,944 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:36,944 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:37,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:09:37,150 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1167171917, now seen corresponding path program 1 times [2020-11-28 03:09:37,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963283071] [2020-11-28 03:09:37,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,164 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:37,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254073940] [2020-11-28 03:09:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:09:37,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:09:37,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963283071] [2020-11-28 03:09:37,266 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:37,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254073940] [2020-11-28 03:09:37,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:37,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:09:37,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486942384] [2020-11-28 03:09:37,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:37,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:37,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:37,269 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 4 states. [2020-11-28 03:09:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,393 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-11-28 03:09:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:37,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 03:09:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,395 INFO L225 Difference]: With dead ends: 83 [2020-11-28 03:09:37,395 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:09:37,396 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 [2020-11-28 03:09:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:09:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 64. [2020-11-28 03:09:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-28 03:09:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-11-28 03:09:37,412 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2020-11-28 03:09:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,413 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-11-28 03:09:37,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-11-28 03:09:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:09:37,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:37,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:37,615 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1165324875, now seen corresponding path program 1 times [2020-11-28 03:09:37,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:37,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123606052] [2020-11-28 03:09:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:37,631 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:37,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875788681] [2020-11-28 03:09:37,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:37,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:09:37,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:09:37,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123606052] [2020-11-28 03:09:37,770 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:37,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875788681] [2020-11-28 03:09:37,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:37,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:09:37,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135713681] [2020-11-28 03:09:37,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:37,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:37,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:37,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:37,772 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 4 states. [2020-11-28 03:09:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:37,955 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-11-28 03:09:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:37,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 03:09:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:37,957 INFO L225 Difference]: With dead ends: 101 [2020-11-28 03:09:37,957 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 03:09:37,957 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 [2020-11-28 03:09:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 03:09:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2020-11-28 03:09:37,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:09:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-11-28 03:09:37,974 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2020-11-28 03:09:37,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:37,974 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-11-28 03:09:37,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-11-28 03:09:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:09:37,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:37,978 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:38,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:38,181 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1822603905, now seen corresponding path program 1 times [2020-11-28 03:09:38,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:38,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907923867] [2020-11-28 03:09:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,202 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:38,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988502613] [2020-11-28 03:09:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:09:38,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907923867] [2020-11-28 03:09:38,303 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:38,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988502613] [2020-11-28 03:09:38,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:38,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:09:38,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210592251] [2020-11-28 03:09:38,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:38,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:38,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:38,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:38,305 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 5 states. [2020-11-28 03:09:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:38,350 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-11-28 03:09:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:38,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-28 03:09:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:38,354 INFO L225 Difference]: With dead ends: 109 [2020-11-28 03:09:38,354 INFO L226 Difference]: Without dead ends: 91 [2020-11-28 03:09:38,355 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 [2020-11-28 03:09:38,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-28 03:09:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-11-28 03:09:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-28 03:09:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-11-28 03:09:38,374 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2020-11-28 03:09:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:38,375 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-11-28 03:09:38,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-11-28 03:09:38,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:09:38,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:38,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:38,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:09:38,594 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:38,595 INFO L82 PathProgramCache]: Analyzing trace with hash -665561194, now seen corresponding path program 1 times [2020-11-28 03:09:38,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:38,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629837909] [2020-11-28 03:09:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:38,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:38,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058655358] [2020-11-28 03:09:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:38,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-28 03:09:38,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:38,720 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:38,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:38,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629837909] [2020-11-28 03:09:38,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:38,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058655358] [2020-11-28 03:09:38,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:38,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:09:38,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132698502] [2020-11-28 03:09:38,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:09:38,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:09:38,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:38,881 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 8 states. [2020-11-28 03:09:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:39,393 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-11-28 03:09:39,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:09:39,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-28 03:09:39,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:39,399 INFO L225 Difference]: With dead ends: 133 [2020-11-28 03:09:39,399 INFO L226 Difference]: Without dead ends: 131 [2020-11-28 03:09:39,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:09:39,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-28 03:09:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-11-28 03:09:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-28 03:09:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-11-28 03:09:39,423 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2020-11-28 03:09:39,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:39,424 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-11-28 03:09:39,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:09:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-11-28 03:09:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:09:39,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:39,425 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:39,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:39,648 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1026065211, now seen corresponding path program 1 times [2020-11-28 03:09:39,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639769347] [2020-11-28 03:09:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:39,659 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:39,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [426157000] [2020-11-28 03:09:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:39,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2020-11-28 03:09:39,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:39,748 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:39,748 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:39,774 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:39,774 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:39,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639769347] [2020-11-28 03:09:39,893 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:39,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426157000] [2020-11-28 03:09:39,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:39,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:09:39,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353129678] [2020-11-28 03:09:39,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:09:39,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:39,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:09:39,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:39,896 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 9 states. [2020-11-28 03:09:40,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:40,553 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-11-28 03:09:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:09:40,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-28 03:09:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:40,556 INFO L225 Difference]: With dead ends: 148 [2020-11-28 03:09:40,556 INFO L226 Difference]: Without dead ends: 136 [2020-11-28 03:09:40,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:09:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-28 03:09:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2020-11-28 03:09:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-11-28 03:09:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-11-28 03:09:40,577 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2020-11-28 03:09:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:40,577 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-11-28 03:09:40,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:09:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-11-28 03:09:40,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:09:40,581 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:40,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:40,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:40,805 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:40,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:40,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1002495632, now seen corresponding path program 1 times [2020-11-28 03:09:40,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:40,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102556750] [2020-11-28 03:09:40,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:40,817 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:40,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869857538] [2020-11-28 03:09:40,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:40,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:09:40,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:40,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102556750] [2020-11-28 03:09:40,969 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:40,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869857538] [2020-11-28 03:09:40,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:40,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:09:40,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080207748] [2020-11-28 03:09:40,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:40,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:40,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:40,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:40,971 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 6 states. [2020-11-28 03:09:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:41,041 INFO L93 Difference]: Finished difference Result 164 states and 196 transitions. [2020-11-28 03:09:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:41,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-11-28 03:09:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:41,045 INFO L225 Difference]: With dead ends: 164 [2020-11-28 03:09:41,045 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:09:41,047 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 [2020-11-28 03:09:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:09:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-11-28 03:09:41,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:09:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2020-11-28 03:09:41,058 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 28 [2020-11-28 03:09:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:41,058 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2020-11-28 03:09:41,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2020-11-28 03:09:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 03:09:41,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:41,062 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:41,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:09:41,278 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:41,279 INFO L82 PathProgramCache]: Analyzing trace with hash 955322372, now seen corresponding path program 2 times [2020-11-28 03:09:41,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:41,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209975924] [2020-11-28 03:09:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:41,289 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:41,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070913256] [2020-11-28 03:09:41,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:41,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:09:41,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-28 03:09:41,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:41,416 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:41,465 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:41,474 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:09:41,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:09:41,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:41 BoogieIcfgContainer [2020-11-28 03:09:41,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:09:41,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:41,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:41,731 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:41,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:33" (3/4) ... [2020-11-28 03:09:41,734 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:09:41,808 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a94f867f-024f-48f5-95dc-0de47e9f4641/bin/uautomizer/witness.graphml [2020-11-28 03:09:41,808 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:41,823 INFO L168 Benchmark]: Toolchain (without parser) took 9859.85 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 65.3 MB in the beginning and 96.0 MB in the end (delta: -30.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:41,823 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:41,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.29 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 71.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:41,825 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.66 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:41,825 INFO L168 Benchmark]: Boogie Preprocessor took 58.32 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:41,826 INFO L168 Benchmark]: RCFGBuilder took 639.45 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 52.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:41,826 INFO L168 Benchmark]: TraceAbstraction took 8681.23 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 51.8 MB in the beginning and 99.1 MB in the end (delta: -47.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:41,827 INFO L168 Benchmark]: Witness Printer took 77.69 ms. Allocated memory is still 146.8 MB. Free memory was 99.1 MB in the beginning and 96.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:41,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 94.4 MB. Free memory is still 50.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.29 ms. Allocated memory is still 94.4 MB. Free memory was 65.1 MB in the beginning and 71.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.66 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.32 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 639.45 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 52.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8681.23 ms. Allocated memory was 94.4 MB in the beginning and 146.8 MB in the end (delta: 52.4 MB). Free memory was 51.8 MB in the beginning and 99.1 MB in the end (delta: -47.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Witness Printer took 77.69 ms. Allocated memory is still 146.8 MB. Free memory was 99.1 MB in the beginning and 96.0 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: 8.5s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 3.0s, 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, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.6s 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...