./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5f3104f8866991317081f2a037cd413a142d8b2f .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-25 08:46:21,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:21,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:21,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:21,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:21,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:21,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:21,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:21,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:21,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:21,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:21,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:21,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:21,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:21,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:21,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:21,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:21,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:21,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:21,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:21,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:21,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:21,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:21,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:21,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:21,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:21,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:21,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:21,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:21,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:21,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:21,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:21,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:21,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:21,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:21,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:21,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:21,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:21,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:21,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:21,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:21,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:21,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:21,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:21,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:21,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:21,681 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:21,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:21,682 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:21,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:21,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:21,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:21,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:21,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:21,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:21,683 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:21,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:21,685 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:21,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:21,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:21,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:21,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:21,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:21,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:21,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:21,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:21,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:21,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:21,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:21,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:21,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0129595a-d772-4a8c-84df-c751143a94b7/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(__VERIFIER_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 -> 5f3104f8866991317081f2a037cd413a142d8b2f [2019-11-25 08:46:21,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:21,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:21,868 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:21,870 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:21,870 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:21,871 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/../../sv-benchmarks/c/pthread/triangular-2.i [2019-11-25 08:46:21,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/data/f2b3dac17/28165a66315344b38166554d9e84417a/FLAGbfee20c5b [2019-11-25 08:46:22,383 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:22,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/sv-benchmarks/c/pthread/triangular-2.i [2019-11-25 08:46:22,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/data/f2b3dac17/28165a66315344b38166554d9e84417a/FLAGbfee20c5b [2019-11-25 08:46:22,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/data/f2b3dac17/28165a66315344b38166554d9e84417a [2019-11-25 08:46:22,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:22,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:22,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:22,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:22,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:22,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:22,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe2060b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22, skipping insertion in model container [2019-11-25 08:46:22,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:22,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:22,471 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:22,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:22,842 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:22,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:22,984 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22 WrapperNode [2019-11-25 08:46:22,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:22,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:22,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:22,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:22,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:23,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:23,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:23,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:23,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... [2019-11-25 08:46:23,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:23,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:23,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:23,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:23,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-25 08:46:23,125 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-25 08:46:23,125 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-25 08:46:23,125 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-25 08:46:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:46:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-25 08:46:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:46:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:46:23,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-25 08:46:23,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:23,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:23,128 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-25 08:46:23,508 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:23,508 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-25 08:46:23,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:23 BoogieIcfgContainer [2019-11-25 08:46:23,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:23,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:23,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:23,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:23,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:22" (1/3) ... [2019-11-25 08:46:23,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d87aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:23, skipping insertion in model container [2019-11-25 08:46:23,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:22" (2/3) ... [2019-11-25 08:46:23,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d87aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:23, skipping insertion in model container [2019-11-25 08:46:23,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:23" (3/3) ... [2019-11-25 08:46:23,518 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2019-11-25 08:46:23,583 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,584 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,584 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,585 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,585 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,586 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,586 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,586 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,586 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,587 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,587 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,587 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,587 WARN L315 ript$VariableManager]: TermVariabe t1Thread1of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,587 WARN L315 ript$VariableManager]: TermVariabe |t1Thread1of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,588 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,588 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,588 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,588 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,588 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,589 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,589 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,589 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,589 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,590 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,590 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,590 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,590 WARN L315 ript$VariableManager]: TermVariabe t1Thread3of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,590 WARN L315 ript$VariableManager]: TermVariabe |t1Thread3of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,591 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,591 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,591 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,591 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,592 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,592 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,592 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,593 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,593 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,593 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,593 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,594 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,594 WARN L315 ript$VariableManager]: TermVariabe t1Thread2of3ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,595 WARN L315 ript$VariableManager]: TermVariabe |t1Thread2of3ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,595 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,595 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,595 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,595 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,596 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,597 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,597 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,597 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,597 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,597 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,597 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,598 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,598 WARN L315 ript$VariableManager]: TermVariabe t2Thread1of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,598 WARN L315 ript$VariableManager]: TermVariabe |t2Thread1of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,599 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,599 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,600 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,600 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,600 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,600 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,600 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,601 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,601 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,601 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,601 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,601 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,601 WARN L315 ript$VariableManager]: TermVariabe t2Thread2of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,602 WARN L315 ript$VariableManager]: TermVariabe |t2Thread2of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,602 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,602 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,603 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,603 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,603 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,603 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,604 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,604 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,604 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,605 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,605 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,605 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,605 WARN L315 ript$VariableManager]: TermVariabe t2Thread3of3ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,608 WARN L315 ript$VariableManager]: TermVariabe |t2Thread3of3ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-25 08:46:23,622 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-25 08:46:23,622 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:23,629 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:23,639 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:23,656 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:23,657 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:23,657 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:23,657 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:23,657 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:23,657 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:23,657 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:23,657 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:23,668 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 95 places, 93 transitions [2019-11-25 08:46:23,771 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1013 states. [2019-11-25 08:46:23,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states. [2019-11-25 08:46:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-25 08:46:23,783 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:23,787 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:23,788 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:23,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:23,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1140660711, now seen corresponding path program 1 times [2019-11-25 08:46:23,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:23,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357059476] [2019-11-25 08:46:23,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:24,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357059476] [2019-11-25 08:46:24,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:24,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:46:24,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234520836] [2019-11-25 08:46:24,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:46:24,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:24,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:24,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:24,158 INFO L87 Difference]: Start difference. First operand 1013 states. Second operand 5 states. [2019-11-25 08:46:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:24,335 INFO L93 Difference]: Finished difference Result 1778 states and 5126 transitions. [2019-11-25 08:46:24,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:46:24,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-25 08:46:24,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:24,366 INFO L225 Difference]: With dead ends: 1778 [2019-11-25 08:46:24,367 INFO L226 Difference]: Without dead ends: 500 [2019-11-25 08:46:24,368 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:46:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-11-25 08:46:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 388. [2019-11-25 08:46:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2019-11-25 08:46:24,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 993 transitions. [2019-11-25 08:46:24,470 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 993 transitions. Word has length 20 [2019-11-25 08:46:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:24,471 INFO L462 AbstractCegarLoop]: Abstraction has 388 states and 993 transitions. [2019-11-25 08:46:24,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:46:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 993 transitions. [2019-11-25 08:46:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:46:24,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:24,473 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:24,473 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:24,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1489054159, now seen corresponding path program 1 times [2019-11-25 08:46:24,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:24,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082241085] [2019-11-25 08:46:24,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:24,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082241085] [2019-11-25 08:46:24,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:24,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:46:24,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867837208] [2019-11-25 08:46:24,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:46:24,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:24,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:24,614 INFO L87 Difference]: Start difference. First operand 388 states and 993 transitions. Second operand 5 states. [2019-11-25 08:46:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:24,680 INFO L93 Difference]: Finished difference Result 465 states and 1147 transitions. [2019-11-25 08:46:24,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:24,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-25 08:46:24,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:24,686 INFO L225 Difference]: With dead ends: 465 [2019-11-25 08:46:24,686 INFO L226 Difference]: Without dead ends: 344 [2019-11-25 08:46:24,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2019-11-25 08:46:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 320. [2019-11-25 08:46:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-25 08:46:24,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 815 transitions. [2019-11-25 08:46:24,700 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 815 transitions. Word has length 23 [2019-11-25 08:46:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:24,700 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 815 transitions. [2019-11-25 08:46:24,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:46:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 815 transitions. [2019-11-25 08:46:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-25 08:46:24,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:24,704 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:24,704 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash 913376083, now seen corresponding path program 1 times [2019-11-25 08:46:24,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:24,705 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111848721] [2019-11-25 08:46:24,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:24,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111848721] [2019-11-25 08:46:24,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:24,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:46:24,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873132452] [2019-11-25 08:46:24,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:46:24,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:24,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:46:24,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:46:24,831 INFO L87 Difference]: Start difference. First operand 320 states and 815 transitions. Second operand 5 states. [2019-11-25 08:46:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:24,911 INFO L93 Difference]: Finished difference Result 421 states and 1017 transitions. [2019-11-25 08:46:24,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:46:24,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-25 08:46:24,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:24,919 INFO L225 Difference]: With dead ends: 421 [2019-11-25 08:46:24,919 INFO L226 Difference]: Without dead ends: 291 [2019-11-25 08:46:24,919 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:46:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-11-25 08:46:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2019-11-25 08:46:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-11-25 08:46:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 715 transitions. [2019-11-25 08:46:24,930 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 715 transitions. Word has length 23 [2019-11-25 08:46:24,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:24,930 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 715 transitions. [2019-11-25 08:46:24,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:46:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 715 transitions. [2019-11-25 08:46:24,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:46:24,932 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:24,932 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:24,932 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:24,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:24,932 INFO L82 PathProgramCache]: Analyzing trace with hash 597396229, now seen corresponding path program 1 times [2019-11-25 08:46:24,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:24,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771540898] [2019-11-25 08:46:24,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:25,063 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771540898] [2019-11-25 08:46:25,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:25,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:46:25,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251605660] [2019-11-25 08:46:25,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:46:25,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:25,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:46:25,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:25,065 INFO L87 Difference]: Start difference. First operand 291 states and 715 transitions. Second operand 6 states. [2019-11-25 08:46:25,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:25,202 INFO L93 Difference]: Finished difference Result 438 states and 1058 transitions. [2019-11-25 08:46:25,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:46:25,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-25 08:46:25,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:25,206 INFO L225 Difference]: With dead ends: 438 [2019-11-25 08:46:25,206 INFO L226 Difference]: Without dead ends: 310 [2019-11-25 08:46:25,206 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:46:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2019-11-25 08:46:25,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 300. [2019-11-25 08:46:25,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-11-25 08:46:25,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 733 transitions. [2019-11-25 08:46:25,222 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 733 transitions. Word has length 26 [2019-11-25 08:46:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:25,223 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 733 transitions. [2019-11-25 08:46:25,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:46:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 733 transitions. [2019-11-25 08:46:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-25 08:46:25,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:25,224 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:25,224 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:25,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:25,224 INFO L82 PathProgramCache]: Analyzing trace with hash 570584329, now seen corresponding path program 2 times [2019-11-25 08:46:25,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:25,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989275786] [2019-11-25 08:46:25,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:25,322 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989275786] [2019-11-25 08:46:25,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:25,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-25 08:46:25,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934637367] [2019-11-25 08:46:25,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:46:25,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:25,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:46:25,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:46:25,323 INFO L87 Difference]: Start difference. First operand 300 states and 733 transitions. Second operand 6 states. [2019-11-25 08:46:25,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:25,419 INFO L93 Difference]: Finished difference Result 457 states and 1096 transitions. [2019-11-25 08:46:25,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:46:25,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-11-25 08:46:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:25,422 INFO L225 Difference]: With dead ends: 457 [2019-11-25 08:46:25,422 INFO L226 Difference]: Without dead ends: 320 [2019-11-25 08:46:25,422 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:46:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-25 08:46:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-25 08:46:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-25 08:46:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 773 transitions. [2019-11-25 08:46:25,433 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 773 transitions. Word has length 26 [2019-11-25 08:46:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:25,433 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 773 transitions. [2019-11-25 08:46:25,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:46:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 773 transitions. [2019-11-25 08:46:25,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:46:25,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:25,440 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:25,441 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash -66636472, now seen corresponding path program 1 times [2019-11-25 08:46:25,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:25,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448279114] [2019-11-25 08:46:25,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:25,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448279114] [2019-11-25 08:46:25,585 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185588730] [2019-11-25 08:46:25,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:25,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:46:25,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:25,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:25,734 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:25,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:25,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-25 08:46:25,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111579561] [2019-11-25 08:46:25,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:46:25,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:25,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:46:25,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:46:25,741 INFO L87 Difference]: Start difference. First operand 320 states and 773 transitions. Second operand 8 states. [2019-11-25 08:46:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:25,913 INFO L93 Difference]: Finished difference Result 565 states and 1361 transitions. [2019-11-25 08:46:25,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:46:25,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-25 08:46:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:25,922 INFO L225 Difference]: With dead ends: 565 [2019-11-25 08:46:25,922 INFO L226 Difference]: Without dead ends: 376 [2019-11-25 08:46:25,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:46:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2019-11-25 08:46:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2019-11-25 08:46:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-11-25 08:46:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 865 transitions. [2019-11-25 08:46:25,939 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 865 transitions. Word has length 30 [2019-11-25 08:46:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:25,939 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 865 transitions. [2019-11-25 08:46:25,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:46:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 865 transitions. [2019-11-25 08:46:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-25 08:46:25,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:25,941 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:26,148 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:26,149 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987234, now seen corresponding path program 1 times [2019-11-25 08:46:26,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:26,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934682836] [2019-11-25 08:46:26,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:26,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934682836] [2019-11-25 08:46:26,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657376718] [2019-11-25 08:46:26,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:46:26,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:26,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:26,361 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:26,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:26,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:26,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-25 08:46:26,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557524870] [2019-11-25 08:46:26,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:46:26,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:26,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:46:26,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:46:26,367 INFO L87 Difference]: Start difference. First operand 364 states and 865 transitions. Second operand 8 states. [2019-11-25 08:46:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:26,470 INFO L93 Difference]: Finished difference Result 649 states and 1529 transitions. [2019-11-25 08:46:26,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:46:26,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2019-11-25 08:46:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:26,474 INFO L225 Difference]: With dead ends: 649 [2019-11-25 08:46:26,475 INFO L226 Difference]: Without dead ends: 460 [2019-11-25 08:46:26,475 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:46:26,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2019-11-25 08:46:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 392. [2019-11-25 08:46:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2019-11-25 08:46:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 917 transitions. [2019-11-25 08:46:26,492 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 917 transitions. Word has length 30 [2019-11-25 08:46:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:26,492 INFO L462 AbstractCegarLoop]: Abstraction has 392 states and 917 transitions. [2019-11-25 08:46:26,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:46:26,493 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 917 transitions. [2019-11-25 08:46:26,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:46:26,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:26,494 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:26,696 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:26,697 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:26,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1142284712, now seen corresponding path program 1 times [2019-11-25 08:46:26,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:26,697 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714152223] [2019-11-25 08:46:26,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:46:26,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714152223] [2019-11-25 08:46:26,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559494283] [2019-11-25 08:46:26,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:26,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:46:26,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:26,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:26,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:26,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:46:26,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:26,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-25 08:46:26,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300133816] [2019-11-25 08:46:26,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:46:26,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:26,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:46:26,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:46:26,956 INFO L87 Difference]: Start difference. First operand 392 states and 917 transitions. Second operand 9 states. [2019-11-25 08:46:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:27,105 INFO L93 Difference]: Finished difference Result 579 states and 1340 transitions. [2019-11-25 08:46:27,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:46:27,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-25 08:46:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:27,108 INFO L225 Difference]: With dead ends: 579 [2019-11-25 08:46:27,108 INFO L226 Difference]: Without dead ends: 436 [2019-11-25 08:46:27,109 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:46:27,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2019-11-25 08:46:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 396. [2019-11-25 08:46:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2019-11-25 08:46:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 929 transitions. [2019-11-25 08:46:27,122 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 929 transitions. Word has length 38 [2019-11-25 08:46:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:27,123 INFO L462 AbstractCegarLoop]: Abstraction has 396 states and 929 transitions. [2019-11-25 08:46:27,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:46:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 929 transitions. [2019-11-25 08:46:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:46:27,125 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:27,126 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:27,329 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:27,329 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:27,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1409902040, now seen corresponding path program 2 times [2019-11-25 08:46:27,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:27,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107112454] [2019-11-25 08:46:27,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:27,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107112454] [2019-11-25 08:46:27,452 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819120783] [2019-11-25 08:46:27,452 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:27,517 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:46:27,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:27,519 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:46:27,521 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:27,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:27,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:27,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:27,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-25 08:46:27,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995500042] [2019-11-25 08:46:27,550 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:46:27,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:27,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:46:27,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:46:27,551 INFO L87 Difference]: Start difference. First operand 396 states and 929 transitions. Second operand 10 states. [2019-11-25 08:46:27,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:27,757 INFO L93 Difference]: Finished difference Result 653 states and 1537 transitions. [2019-11-25 08:46:27,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:46:27,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-25 08:46:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:27,760 INFO L225 Difference]: With dead ends: 653 [2019-11-25 08:46:27,760 INFO L226 Difference]: Without dead ends: 440 [2019-11-25 08:46:27,761 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:46:27,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2019-11-25 08:46:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 428. [2019-11-25 08:46:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2019-11-25 08:46:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 993 transitions. [2019-11-25 08:46:27,770 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 993 transitions. Word has length 38 [2019-11-25 08:46:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:27,771 INFO L462 AbstractCegarLoop]: Abstraction has 428 states and 993 transitions. [2019-11-25 08:46:27,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:46:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 993 transitions. [2019-11-25 08:46:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:46:27,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:27,772 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:27,976 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:27,984 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:27,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:27,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1601775870, now seen corresponding path program 3 times [2019-11-25 08:46:27,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:27,984 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731103534] [2019-11-25 08:46:27,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:28,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731103534] [2019-11-25 08:46:28,096 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714200420] [2019-11-25 08:46:28,096 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:28,172 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:46:28,173 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:28,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:46:28,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:28,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:28,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:28,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:28,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:28,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-25 08:46:28,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133408585] [2019-11-25 08:46:28,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:46:28,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:28,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:46:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:46:28,206 INFO L87 Difference]: Start difference. First operand 428 states and 993 transitions. Second operand 10 states. [2019-11-25 08:46:28,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:28,414 INFO L93 Difference]: Finished difference Result 685 states and 1601 transitions. [2019-11-25 08:46:28,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-25 08:46:28,415 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2019-11-25 08:46:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:28,418 INFO L225 Difference]: With dead ends: 685 [2019-11-25 08:46:28,418 INFO L226 Difference]: Without dead ends: 448 [2019-11-25 08:46:28,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-25 08:46:28,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2019-11-25 08:46:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 349. [2019-11-25 08:46:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-11-25 08:46:28,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 831 transitions. [2019-11-25 08:46:28,430 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 831 transitions. Word has length 38 [2019-11-25 08:46:28,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:28,431 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 831 transitions. [2019-11-25 08:46:28,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:46:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 831 transitions. [2019-11-25 08:46:28,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-25 08:46:28,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:28,432 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:28,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:28,636 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:28,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:28,637 INFO L82 PathProgramCache]: Analyzing trace with hash 977418949, now seen corresponding path program 4 times [2019-11-25 08:46:28,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:28,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703314219] [2019-11-25 08:46:28,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:28,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703314219] [2019-11-25 08:46:28,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878746434] [2019-11-25 08:46:28,778 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:28,851 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:46:28,851 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:28,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:46:28,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:28,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:28,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:28,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:28,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-25 08:46:28,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94582374] [2019-11-25 08:46:28,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-25 08:46:28,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:28,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:46:28,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:46:28,889 INFO L87 Difference]: Start difference. First operand 349 states and 831 transitions. Second operand 11 states. [2019-11-25 08:46:29,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:29,120 INFO L93 Difference]: Finished difference Result 705 states and 1641 transitions. [2019-11-25 08:46:29,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:46:29,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2019-11-25 08:46:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:29,127 INFO L225 Difference]: With dead ends: 705 [2019-11-25 08:46:29,127 INFO L226 Difference]: Without dead ends: 516 [2019-11-25 08:46:29,128 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2019-11-25 08:46:29,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2019-11-25 08:46:29,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 476. [2019-11-25 08:46:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2019-11-25 08:46:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1089 transitions. [2019-11-25 08:46:29,140 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1089 transitions. Word has length 42 [2019-11-25 08:46:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:29,141 INFO L462 AbstractCegarLoop]: Abstraction has 476 states and 1089 transitions. [2019-11-25 08:46:29,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-25 08:46:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1089 transitions. [2019-11-25 08:46:29,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-25 08:46:29,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:29,142 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:29,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:29,353 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1948458760, now seen corresponding path program 5 times [2019-11-25 08:46:29,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:29,354 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200523256] [2019-11-25 08:46:29,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:29,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200523256] [2019-11-25 08:46:29,511 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795167855] [2019-11-25 08:46:29,511 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:29,595 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-25 08:46:29,596 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:29,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:46:29,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:29,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:29,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:29,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:29,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-25 08:46:29,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344011828] [2019-11-25 08:46:29,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:46:29,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:29,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:46:29,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:46:29,637 INFO L87 Difference]: Start difference. First operand 476 states and 1089 transitions. Second operand 12 states. [2019-11-25 08:46:29,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:29,870 INFO L93 Difference]: Finished difference Result 749 states and 1729 transitions. [2019-11-25 08:46:29,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:46:29,870 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2019-11-25 08:46:29,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:29,874 INFO L225 Difference]: With dead ends: 749 [2019-11-25 08:46:29,874 INFO L226 Difference]: Without dead ends: 560 [2019-11-25 08:46:29,875 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2019-11-25 08:46:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-11-25 08:46:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 405. [2019-11-25 08:46:29,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2019-11-25 08:46:29,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 943 transitions. [2019-11-25 08:46:29,892 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 943 transitions. Word has length 46 [2019-11-25 08:46:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:29,892 INFO L462 AbstractCegarLoop]: Abstraction has 405 states and 943 transitions. [2019-11-25 08:46:29,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:46:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 943 transitions. [2019-11-25 08:46:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:46:29,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:29,894 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:30,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:30,105 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:30,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:30,106 INFO L82 PathProgramCache]: Analyzing trace with hash -756671963, now seen corresponding path program 6 times [2019-11-25 08:46:30,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:30,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595875245] [2019-11-25 08:46:30,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:46:30,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595875245] [2019-11-25 08:46:30,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437931522] [2019-11-25 08:46:30,291 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:30,366 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-25 08:46:30,366 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:30,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:46:30,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:30,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:30,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:30,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:46:30,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:30,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-25 08:46:30,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864062348] [2019-11-25 08:46:30,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:46:30,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:30,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:46:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:46:30,403 INFO L87 Difference]: Start difference. First operand 405 states and 943 transitions. Second operand 12 states. [2019-11-25 08:46:30,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:30,635 INFO L93 Difference]: Finished difference Result 691 states and 1564 transitions. [2019-11-25 08:46:30,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-25 08:46:30,635 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2019-11-25 08:46:30,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:30,638 INFO L225 Difference]: With dead ends: 691 [2019-11-25 08:46:30,638 INFO L226 Difference]: Without dead ends: 548 [2019-11-25 08:46:30,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:46:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-11-25 08:46:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 508. [2019-11-25 08:46:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2019-11-25 08:46:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1153 transitions. [2019-11-25 08:46:30,651 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1153 transitions. Word has length 50 [2019-11-25 08:46:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:30,652 INFO L462 AbstractCegarLoop]: Abstraction has 508 states and 1153 transitions. [2019-11-25 08:46:30,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:46:30,652 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1153 transitions. [2019-11-25 08:46:30,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:46:30,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:30,653 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:30,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:30,857 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:30,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:30,857 INFO L82 PathProgramCache]: Analyzing trace with hash 986108581, now seen corresponding path program 7 times [2019-11-25 08:46:30,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:30,857 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895082176] [2019-11-25 08:46:30,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:30,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895082176] [2019-11-25 08:46:30,983 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959930534] [2019-11-25 08:46:30,983 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:31,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:46:31,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:31,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:31,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:31,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-25 08:46:31,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536625811] [2019-11-25 08:46:31,083 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-25 08:46:31,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:31,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-25 08:46:31,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-25 08:46:31,084 INFO L87 Difference]: Start difference. First operand 508 states and 1153 transitions. Second operand 13 states. [2019-11-25 08:46:31,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:31,360 INFO L93 Difference]: Finished difference Result 765 states and 1761 transitions. [2019-11-25 08:46:31,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:46:31,360 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2019-11-25 08:46:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:31,363 INFO L225 Difference]: With dead ends: 765 [2019-11-25 08:46:31,364 INFO L226 Difference]: Without dead ends: 528 [2019-11-25 08:46:31,364 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2019-11-25 08:46:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2019-11-25 08:46:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 394. [2019-11-25 08:46:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2019-11-25 08:46:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 921 transitions. [2019-11-25 08:46:31,377 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 921 transitions. Word has length 50 [2019-11-25 08:46:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:31,377 INFO L462 AbstractCegarLoop]: Abstraction has 394 states and 921 transitions. [2019-11-25 08:46:31,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-25 08:46:31,378 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 921 transitions. [2019-11-25 08:46:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-25 08:46:31,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:31,378 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:31,584 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:31,585 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:31,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:31,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1433191400, now seen corresponding path program 8 times [2019-11-25 08:46:31,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:31,585 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351173833] [2019-11-25 08:46:31,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:31,737 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351173833] [2019-11-25 08:46:31,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668361632] [2019-11-25 08:46:31,737 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/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 [2019-11-25 08:46:31,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:46:31,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:46:31,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-25 08:46:31,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:31,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:31,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:46:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:31,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:46:31,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-25 08:46:31,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237529851] [2019-11-25 08:46:31,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:46:31,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:31,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:46:31,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:46:31,856 INFO L87 Difference]: Start difference. First operand 394 states and 921 transitions. Second operand 14 states. [2019-11-25 08:46:32,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:32,093 INFO L93 Difference]: Finished difference Result 789 states and 1809 transitions. [2019-11-25 08:46:32,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-25 08:46:32,093 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2019-11-25 08:46:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:32,097 INFO L225 Difference]: With dead ends: 789 [2019-11-25 08:46:32,097 INFO L226 Difference]: Without dead ends: 600 [2019-11-25 08:46:32,098 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2019-11-25 08:46:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-11-25 08:46:32,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 572. [2019-11-25 08:46:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-11-25 08:46:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1281 transitions. [2019-11-25 08:46:32,114 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1281 transitions. Word has length 54 [2019-11-25 08:46:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:32,114 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 1281 transitions. [2019-11-25 08:46:32,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:46:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1281 transitions. [2019-11-25 08:46:32,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-11-25 08:46:32,116 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:32,116 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:32,319 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:46:32,319 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:32,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1868199291, now seen corresponding path program 9 times [2019-11-25 08:46:32,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:32,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238811967] [2019-11-25 08:46:32,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:32,370 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:32,371 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:32,470 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-25 08:46:32,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:32 BasicIcfg [2019-11-25 08:46:32,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:32,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:32,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:32,472 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:32,472 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:23" (3/4) ... [2019-11-25 08:46:32,474 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:46:32,588 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0129595a-d772-4a8c-84df-c751143a94b7/bin/uautomizer/witness.graphml [2019-11-25 08:46:32,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:32,590 INFO L168 Benchmark]: Toolchain (without parser) took 10167.79 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 316.7 MB). Free memory was 940.7 MB in the beginning and 986.4 MB in the end (delta: -45.7 MB). Peak memory consumption was 270.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:32,590 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:32,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 562.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:32,591 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:32,591 INFO L168 Benchmark]: Boogie Preprocessor took 28.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:32,592 INFO L168 Benchmark]: RCFGBuilder took 456.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:32,592 INFO L168 Benchmark]: TraceAbstraction took 8959.61 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 153.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.1 MB). Peak memory consumption was 244.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:32,592 INFO L168 Benchmark]: Witness Printer took 116.90 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 986.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:32,594 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 562.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 456.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8959.61 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 153.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.1 MB). Peak memory consumption was 244.2 MB. Max. memory is 11.5 GB. * Witness Printer took 116.90 ms. Allocated memory is still 1.3 GB. Free memory was 1.0 GB in the beginning and 986.4 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=0] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=0, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=1, k=3] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L677] COND TRUE 1 k < 5 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=3, k=4] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L685] COND TRUE 2 k < 5 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L697] 0 int condI = i >= (2*5 +6); [L700] 0 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 101 locations, 1 error locations. Result: UNSAFE, OverallTime: 8.8s, OverallIterations: 16, TraceHistogramMax: 5, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 845 SDtfs, 2523 SDslu, 3495 SDs, 0 SdLazy, 689 SolverSat, 270 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 616 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1013occurred in iteration=0, 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, 15 MinimizatonAttempts, 774 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1008 NumberOfCodeBlocks, 1008 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 925 ConstructedInterpolants, 0 QuantifiedInterpolants, 111183 SizeOfPredicates, 87 NumberOfNonLiveVariables, 1122 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 25 InterpolantComputations, 5 PerfectInterpolantSequences, 4/326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...