./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:47:47,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:47:47,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:47:47,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:47:47,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:47:47,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:47:47,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:47:47,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:47:47,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:47:47,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:47:47,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:47:47,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:47:47,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:47:47,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:47:47,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:47:47,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:47:47,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:47:47,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:47:47,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:47:47,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:47:47,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:47:47,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:47:47,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:47:47,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:47:47,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:47:47,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:47:47,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:47:47,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:47:47,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:47:47,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:47:47,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:47:47,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:47:47,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:47:47,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:47:47,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:47:47,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:47:47,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:47:47,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:47:47,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:47:47,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:47:47,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:47:47,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:47:47,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:47:47,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:47:47,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:47:47,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:47:47,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:47:47,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:47:47,190 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:47:47,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:47:47,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:47:47,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:47:47,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:47:47,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:47:47,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:47:47,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:47:47,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:47:47,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:47:47,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:47:47,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:47:47,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:47:47,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:47:47,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:47:47,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:47:47,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:47:47,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:47:47,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:47:47,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:47:47,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:47:47,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:47:47,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:47:47,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2021-11-09 09:47:47,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:47:47,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:47:47,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:47:47,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:47:47,586 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:47:47,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-09 09:47:47,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/data/2b44127ca/8d55a3df7bd6498a82533d00ab867b2a/FLAGa9e37c85d [2021-11-09 09:47:48,677 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:47:48,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-09 09:47:48,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/data/2b44127ca/8d55a3df7bd6498a82533d00ab867b2a/FLAGa9e37c85d [2021-11-09 09:47:49,092 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/data/2b44127ca/8d55a3df7bd6498a82533d00ab867b2a [2021-11-09 09:47:49,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:47:49,099 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:47:49,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:47:49,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:47:49,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:47:49,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:47:49" (1/1) ... [2021-11-09 09:47:49,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef36b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:49, skipping insertion in model container [2021-11-09 09:47:49,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:47:49" (1/1) ... [2021-11-09 09:47:49,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:47:49,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:47:51,056 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2021-11-09 09:47:51,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:47:51,152 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:47:51,555 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2021-11-09 09:47:51,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:47:51,639 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:47:51,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51 WrapperNode [2021-11-09 09:47:51,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:47:51,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:47:51,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:47:51,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:47:51,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:51,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:53,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:47:53,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:47:53,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:47:53,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:47:53,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:53,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:53,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:53,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:55,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:55,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:55,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:56,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:47:56,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:47:56,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:47:56,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:47:56,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (1/1) ... [2021-11-09 09:47:56,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:47:56,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:47:56,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:47:56,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:47:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-09 09:47:56,184 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2021-11-09 09:47:56,184 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2021-11-09 09:47:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:47:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-09 09:47:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:47:56,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:47:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-09 09:47:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:47:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:47:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-09 09:47:56,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:47:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:47:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:47:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-09 09:47:56,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-09 09:47:56,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:47:56,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:47:56,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:49:32,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:49:32,468 INFO L299 CfgBuilder]: Removed 9499 assume(true) statements. [2021-11-09 09:49:32,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:32 BoogieIcfgContainer [2021-11-09 09:49:32,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:49:32,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:49:32,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:49:32,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:49:32,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:47:49" (1/3) ... [2021-11-09 09:49:32,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcdb838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:49:32, skipping insertion in model container [2021-11-09 09:49:32,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:47:51" (2/3) ... [2021-11-09 09:49:32,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcdb838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:49:32, skipping insertion in model container [2021-11-09 09:49:32,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:32" (3/3) ... [2021-11-09 09:49:32,492 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2021-11-09 09:49:32,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:49:32,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 260 error locations. [2021-11-09 09:49:32,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:49:32,602 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:49:32,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 260 error locations. [2021-11-09 09:49:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand has 11252 states, 10886 states have (on average 1.544093330883704) internal successors, (16809), 11146 states have internal predecessors, (16809), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-09 09:49:32,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 09:49:32,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:32,837 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:32,838 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:32,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1324479388, now seen corresponding path program 1 times [2021-11-09 09:49:32,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:32,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408127768] [2021-11-09 09:49:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:32,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:33,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:33,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408127768] [2021-11-09 09:49:33,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408127768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:33,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:33,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:49:33,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074102600] [2021-11-09 09:49:33,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:49:33,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:33,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:49:33,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:33,717 INFO L87 Difference]: Start difference. First operand has 11252 states, 10886 states have (on average 1.544093330883704) internal successors, (16809), 11146 states have internal predecessors, (16809), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:34,309 INFO L93 Difference]: Finished difference Result 17084 states and 25114 transitions. [2021-11-09 09:49:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:49:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-09 09:49:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:34,371 INFO L225 Difference]: With dead ends: 17084 [2021-11-09 09:49:34,371 INFO L226 Difference]: Without dead ends: 5831 [2021-11-09 09:49:34,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2021-11-09 09:49:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5027. [2021-11-09 09:49:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5027 states, 4662 states have (on average 1.3142428142428142) internal successors, (6127), 4921 states have internal predecessors, (6127), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-09 09:49:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5027 states to 5027 states and 6333 transitions. [2021-11-09 09:49:34,782 INFO L78 Accepts]: Start accepts. Automaton has 5027 states and 6333 transitions. Word has length 8 [2021-11-09 09:49:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:34,783 INFO L470 AbstractCegarLoop]: Abstraction has 5027 states and 6333 transitions. [2021-11-09 09:49:34,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 5027 states and 6333 transitions. [2021-11-09 09:49:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 09:49:34,785 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:34,785 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:34,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:49:34,786 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:34,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:34,786 INFO L85 PathProgramCache]: Analyzing trace with hash 439110634, now seen corresponding path program 1 times [2021-11-09 09:49:34,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:34,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617279882] [2021-11-09 09:49:34,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:34,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:35,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:35,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617279882] [2021-11-09 09:49:35,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617279882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:49:35,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929712337] [2021-11-09 09:49:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:35,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:49:35,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:35,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:49:35,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:49:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:36,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:49:36,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:36,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929712337] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:49:36,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:49:36,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:49:36,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704847379] [2021-11-09 09:49:36,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:49:36,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:36,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:49:36,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:49:36,256 INFO L87 Difference]: Start difference. First operand 5027 states and 6333 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:36,768 INFO L93 Difference]: Finished difference Result 10854 states and 13624 transitions. [2021-11-09 09:49:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:49:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-09 09:49:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:36,825 INFO L225 Difference]: With dead ends: 10854 [2021-11-09 09:49:36,825 INFO L226 Difference]: Without dead ends: 6636 [2021-11-09 09:49:36,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:49:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6636 states. [2021-11-09 09:49:37,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6636 to 5722. [2021-11-09 09:49:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 5345 states have (on average 1.3116931711880262) internal successors, (7011), 5604 states have internal predecessors, (7011), 115 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-09 09:49:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 7241 transitions. [2021-11-09 09:49:37,134 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 7241 transitions. Word has length 12 [2021-11-09 09:49:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:37,136 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 7241 transitions. [2021-11-09 09:49:37,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 7241 transitions. [2021-11-09 09:49:37,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 09:49:37,140 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:37,140 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:37,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:37,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:49:37,360 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:37,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1798976200, now seen corresponding path program 2 times [2021-11-09 09:49:37,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:37,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538697591] [2021-11-09 09:49:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:37,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:49:37,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:37,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538697591] [2021-11-09 09:49:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538697591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:37,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:37,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:49:37,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965511678] [2021-11-09 09:49:37,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:49:37,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:49:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:49:37,651 INFO L87 Difference]: Start difference. First operand 5722 states and 7241 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:38,270 INFO L93 Difference]: Finished difference Result 5725 states and 7243 transitions. [2021-11-09 09:49:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:49:38,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-09 09:49:38,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:38,324 INFO L225 Difference]: With dead ends: 5725 [2021-11-09 09:49:38,324 INFO L226 Difference]: Without dead ends: 5722 [2021-11-09 09:49:38,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:49:38,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5722 states. [2021-11-09 09:49:38,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5722 to 5722. [2021-11-09 09:49:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5722 states, 5345 states have (on average 1.3115060804490177) internal successors, (7010), 5604 states have internal predecessors, (7010), 115 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-09 09:49:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5722 states to 5722 states and 7240 transitions. [2021-11-09 09:49:38,575 INFO L78 Accepts]: Start accepts. Automaton has 5722 states and 7240 transitions. Word has length 16 [2021-11-09 09:49:38,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:38,576 INFO L470 AbstractCegarLoop]: Abstraction has 5722 states and 7240 transitions. [2021-11-09 09:49:38,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5722 states and 7240 transitions. [2021-11-09 09:49:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-09 09:49:38,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:38,578 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:38,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:49:38,579 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:38,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1691963923, now seen corresponding path program 1 times [2021-11-09 09:49:38,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:38,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699549073] [2021-11-09 09:49:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:38,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:49:38,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:38,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699549073] [2021-11-09 09:49:38,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699549073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:38,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:38,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:49:38,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122196462] [2021-11-09 09:49:38,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:49:38,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:38,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:49:38,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:38,740 INFO L87 Difference]: Start difference. First operand 5722 states and 7240 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:38,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:38,947 INFO L93 Difference]: Finished difference Result 6530 states and 8206 transitions. [2021-11-09 09:49:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:49:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-09 09:49:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:39,003 INFO L225 Difference]: With dead ends: 6530 [2021-11-09 09:49:39,004 INFO L226 Difference]: Without dead ends: 6527 [2021-11-09 09:49:39,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:39,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2021-11-09 09:49:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 5723. [2021-11-09 09:49:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5723 states, 5346 states have (on average 1.3114478114478114) internal successors, (7011), 5605 states have internal predecessors, (7011), 115 states have call successors, (115), 2 states have call predecessors, (115), 2 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-09 09:49:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5723 states to 5723 states and 7241 transitions. [2021-11-09 09:49:39,255 INFO L78 Accepts]: Start accepts. Automaton has 5723 states and 7241 transitions. Word has length 20 [2021-11-09 09:49:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:39,255 INFO L470 AbstractCegarLoop]: Abstraction has 5723 states and 7241 transitions. [2021-11-09 09:49:39,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:39,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5723 states and 7241 transitions. [2021-11-09 09:49:39,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:49:39,258 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:39,259 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:39,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:49:39,259 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:39,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:39,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1285318559, now seen corresponding path program 1 times [2021-11-09 09:49:39,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:39,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202376703] [2021-11-09 09:49:39,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:39,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 09:49:39,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:39,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202376703] [2021-11-09 09:49:39,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202376703] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:39,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:39,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:49:39,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349051451] [2021-11-09 09:49:39,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:49:39,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:39,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:49:39,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:39,489 INFO L87 Difference]: Start difference. First operand 5723 states and 7241 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:45,882 INFO L93 Difference]: Finished difference Result 6796 states and 8779 transitions. [2021-11-09 09:49:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:49:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-09 09:49:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:45,931 INFO L225 Difference]: With dead ends: 6796 [2021-11-09 09:49:45,931 INFO L226 Difference]: Without dead ends: 6723 [2021-11-09 09:49:45,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:45,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6723 states. [2021-11-09 09:49:46,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6723 to 6686. [2021-11-09 09:49:46,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6686 states, 6304 states have (on average 1.3370875634517767) internal successors, (8429), 6563 states have internal predecessors, (8429), 118 states have call successors, (118), 4 states have call predecessors, (118), 4 states have return successors, (121), 118 states have call predecessors, (121), 118 states have call successors, (121) [2021-11-09 09:49:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6686 states to 6686 states and 8668 transitions. [2021-11-09 09:49:46,207 INFO L78 Accepts]: Start accepts. Automaton has 6686 states and 8668 transitions. Word has length 24 [2021-11-09 09:49:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:46,207 INFO L470 AbstractCegarLoop]: Abstraction has 6686 states and 8668 transitions. [2021-11-09 09:49:46,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6686 states and 8668 transitions. [2021-11-09 09:49:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 09:49:46,211 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:46,212 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:46,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:49:46,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:46,213 INFO L85 PathProgramCache]: Analyzing trace with hash -97975189, now seen corresponding path program 1 times [2021-11-09 09:49:46,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:46,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809454938] [2021-11-09 09:49:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:46,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:46,299 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:49:46,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450818640] [2021-11-09 09:49:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:46,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:49:46,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:46,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:49:46,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:49:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:47,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 09:49:47,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:49:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:49:47,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:47,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809454938] [2021-11-09 09:49:47,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:49:47,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450818640] [2021-11-09 09:49:47,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450818640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:47,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:47,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:49:47,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561171075] [2021-11-09 09:49:47,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:49:47,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:49:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:47,602 INFO L87 Difference]: Start difference. First operand 6686 states and 8668 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:54,124 INFO L93 Difference]: Finished difference Result 13333 states and 17285 transitions. [2021-11-09 09:49:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:49:54,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-09 09:49:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:54,186 INFO L225 Difference]: With dead ends: 13333 [2021-11-09 09:49:54,186 INFO L226 Difference]: Without dead ends: 6700 [2021-11-09 09:49:54,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:49:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-11-09 09:49:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 6693. [2021-11-09 09:49:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6693 states, 6311 states have (on average 1.3367136745365236) internal successors, (8436), 6570 states have internal predecessors, (8436), 118 states have call successors, (118), 4 states have call predecessors, (118), 4 states have return successors, (121), 118 states have call predecessors, (121), 118 states have call successors, (121) [2021-11-09 09:49:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6693 states to 6693 states and 8675 transitions. [2021-11-09 09:49:54,490 INFO L78 Accepts]: Start accepts. Automaton has 6693 states and 8675 transitions. Word has length 41 [2021-11-09 09:49:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:49:54,491 INFO L470 AbstractCegarLoop]: Abstraction has 6693 states and 8675 transitions. [2021-11-09 09:49:54,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6693 states and 8675 transitions. [2021-11-09 09:49:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-09 09:49:54,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:49:54,497 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:49:54,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:49:54,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:49:54,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr182ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:49:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:54,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1909542780, now seen corresponding path program 1 times [2021-11-09 09:49:54,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:54,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679030976] [2021-11-09 09:49:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:54,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:49:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:49:55,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:49:55,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679030976] [2021-11-09 09:49:55,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679030976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:49:55,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:49:55,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:49:55,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685277974] [2021-11-09 09:49:55,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:49:55,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:49:55,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:49:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:49:55,381 INFO L87 Difference]: Start difference. First operand 6693 states and 8675 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:59,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:49:59,635 INFO L93 Difference]: Finished difference Result 18470 states and 23799 transitions. [2021-11-09 09:49:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:49:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-09 09:49:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:49:59,695 INFO L225 Difference]: With dead ends: 18470 [2021-11-09 09:49:59,695 INFO L226 Difference]: Without dead ends: 13391 [2021-11-09 09:49:59,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:49:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13391 states. [2021-11-09 09:50:00,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13391 to 6699. [2021-11-09 09:50:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6699 states, 6317 states have (on average 1.3363938578439132) internal successors, (8442), 6576 states have internal predecessors, (8442), 118 states have call successors, (118), 4 states have call predecessors, (118), 4 states have return successors, (121), 118 states have call predecessors, (121), 118 states have call successors, (121) [2021-11-09 09:50:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6699 states to 6699 states and 8681 transitions. [2021-11-09 09:50:00,190 INFO L78 Accepts]: Start accepts. Automaton has 6699 states and 8681 transitions. Word has length 43 [2021-11-09 09:50:00,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:00,193 INFO L470 AbstractCegarLoop]: Abstraction has 6699 states and 8681 transitions. [2021-11-09 09:50:00,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 6699 states and 8681 transitions. [2021-11-09 09:50:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-09 09:50:00,196 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:00,196 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:00,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:50:00,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr182ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:00,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1962722690, now seen corresponding path program 1 times [2021-11-09 09:50:00,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:00,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117622802] [2021-11-09 09:50:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:00,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:50:00,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:00,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117622802] [2021-11-09 09:50:00,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117622802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:00,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:00,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:50:00,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482736635] [2021-11-09 09:50:00,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:00,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:00,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:00,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:00,534 INFO L87 Difference]: Start difference. First operand 6699 states and 8681 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:11,588 INFO L93 Difference]: Finished difference Result 8658 states and 11281 transitions. [2021-11-09 09:50:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:11,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-09 09:50:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:11,641 INFO L225 Difference]: With dead ends: 8658 [2021-11-09 09:50:11,643 INFO L226 Difference]: Without dead ends: 8510 [2021-11-09 09:50:11,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2021-11-09 09:50:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 8507. [2021-11-09 09:50:12,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8507 states, 8054 states have (on average 1.326173330022349) internal successors, (10681), 8313 states have internal predecessors, (10681), 187 states have call successors, (187), 6 states have call predecessors, (187), 6 states have return successors, (259), 187 states have call predecessors, (259), 187 states have call successors, (259) [2021-11-09 09:50:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8507 states to 8507 states and 11127 transitions. [2021-11-09 09:50:12,112 INFO L78 Accepts]: Start accepts. Automaton has 8507 states and 11127 transitions. Word has length 43 [2021-11-09 09:50:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:12,113 INFO L470 AbstractCegarLoop]: Abstraction has 8507 states and 11127 transitions. [2021-11-09 09:50:12,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 8507 states and 11127 transitions. [2021-11-09 09:50:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:50:12,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:12,121 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:12,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:50:12,121 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:12,122 INFO L85 PathProgramCache]: Analyzing trace with hash 299197431, now seen corresponding path program 1 times [2021-11-09 09:50:12,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:12,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735122056] [2021-11-09 09:50:12,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:12,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:12,223 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:50:12,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365541471] [2021-11-09 09:50:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:12,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:12,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:12,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:50:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:13,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:13,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:50:13,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:13,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735122056] [2021-11-09 09:50:13,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:50:13,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365541471] [2021-11-09 09:50:13,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365541471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:13,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:13,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:13,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211292677] [2021-11-09 09:50:13,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:13,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:13,763 INFO L87 Difference]: Start difference. First operand 8507 states and 11127 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:16,550 INFO L93 Difference]: Finished difference Result 8507 states and 11127 transitions. [2021-11-09 09:50:16,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-09 09:50:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:16,593 INFO L225 Difference]: With dead ends: 8507 [2021-11-09 09:50:16,593 INFO L226 Difference]: Without dead ends: 8377 [2021-11-09 09:50:16,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8377 states. [2021-11-09 09:50:17,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8377 to 8376. [2021-11-09 09:50:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8376 states, 7988 states have (on average 1.3192288432648973) internal successors, (10538), 8182 states have internal predecessors, (10538), 187 states have call successors, (187), 6 states have call predecessors, (187), 6 states have return successors, (259), 187 states have call predecessors, (259), 187 states have call successors, (259) [2021-11-09 09:50:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8376 states to 8376 states and 10984 transitions. [2021-11-09 09:50:17,379 INFO L78 Accepts]: Start accepts. Automaton has 8376 states and 10984 transitions. Word has length 49 [2021-11-09 09:50:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:17,380 INFO L470 AbstractCegarLoop]: Abstraction has 8376 states and 10984 transitions. [2021-11-09 09:50:17,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:17,380 INFO L276 IsEmpty]: Start isEmpty. Operand 8376 states and 10984 transitions. [2021-11-09 09:50:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-09 09:50:17,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:17,386 INFO L513 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, 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, 1, 1, 1] [2021-11-09 09:50:17,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:17,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:17,600 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:17,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -224442265, now seen corresponding path program 1 times [2021-11-09 09:50:17,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:17,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201154755] [2021-11-09 09:50:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:17,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:17,684 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:50:17,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497724880] [2021-11-09 09:50:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:17,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:17,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:17,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:17,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:50:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:18,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 2220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:50:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:19,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:19,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201154755] [2021-11-09 09:50:19,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:50:19,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497724880] [2021-11-09 09:50:19,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497724880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:19,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:50:19,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 09:50:19,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111130688] [2021-11-09 09:50:19,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:19,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:19,243 INFO L87 Difference]: Start difference. First operand 8376 states and 10984 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:31,964 INFO L93 Difference]: Finished difference Result 16719 states and 21923 transitions. [2021-11-09 09:50:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-09 09:50:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:32,013 INFO L225 Difference]: With dead ends: 16719 [2021-11-09 09:50:32,013 INFO L226 Difference]: Without dead ends: 8397 [2021-11-09 09:50:32,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:32,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states. [2021-11-09 09:50:32,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 8390. [2021-11-09 09:50:32,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8002 states have (on average 1.3186703324168958) internal successors, (10552), 8196 states have internal predecessors, (10552), 187 states have call successors, (187), 6 states have call predecessors, (187), 6 states have return successors, (259), 187 states have call predecessors, (259), 187 states have call successors, (259) [2021-11-09 09:50:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 10998 transitions. [2021-11-09 09:50:32,505 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 10998 transitions. Word has length 57 [2021-11-09 09:50:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:32,505 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 10998 transitions. [2021-11-09 09:50:32,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 10998 transitions. [2021-11-09 09:50:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-09 09:50:32,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:32,525 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:32,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:32,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:50:32,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr191ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 770207568, now seen corresponding path program 1 times [2021-11-09 09:50:32,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:32,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981077886] [2021-11-09 09:50:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:32,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:33,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:33,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:33,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981077886] [2021-11-09 09:50:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981077886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:33,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891119195] [2021-11-09 09:50:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:33,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:33,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:33,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:50:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:34,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:50:34,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:50:34,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891119195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:34,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:50:34,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-09 09:50:34,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772511173] [2021-11-09 09:50:34,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:50:34,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:50:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:34,961 INFO L87 Difference]: Start difference. First operand 8390 states and 10998 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:35,603 INFO L93 Difference]: Finished difference Result 17002 states and 22149 transitions. [2021-11-09 09:50:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:50:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-09 09:50:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:35,638 INFO L225 Difference]: With dead ends: 17002 [2021-11-09 09:50:35,638 INFO L226 Difference]: Without dead ends: 10272 [2021-11-09 09:50:35,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:50:35,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10272 states. [2021-11-09 09:50:36,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10272 to 9200. [2021-11-09 09:50:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9200 states, 8799 states have (on average 1.3152630980793272) internal successors, (11573), 8993 states have internal predecessors, (11573), 200 states have call successors, (200), 6 states have call predecessors, (200), 6 states have return successors, (273), 200 states have call predecessors, (273), 200 states have call successors, (273) [2021-11-09 09:50:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9200 states to 9200 states and 12046 transitions. [2021-11-09 09:50:36,191 INFO L78 Accepts]: Start accepts. Automaton has 9200 states and 12046 transitions. Word has length 58 [2021-11-09 09:50:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:36,192 INFO L470 AbstractCegarLoop]: Abstraction has 9200 states and 12046 transitions. [2021-11-09 09:50:36,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 9200 states and 12046 transitions. [2021-11-09 09:50:36,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-09 09:50:36,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:36,199 INFO L513 BasicCegarLoop]: trace histogram [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, 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] [2021-11-09 09:50:36,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:36,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:36,412 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:36,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:36,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1976997501, now seen corresponding path program 2 times [2021-11-09 09:50:36,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:36,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76346962] [2021-11-09 09:50:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:36,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:36,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:50:36,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531097604] [2021-11-09 09:50:36,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:50:36,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:36,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:36,497 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:36,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:50:37,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:50:37,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:50:37,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:50:37,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:38,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-09 09:50:38,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:38,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76346962] [2021-11-09 09:50:38,041 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:50:38,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531097604] [2021-11-09 09:50:38,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531097604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:38,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:38,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:50:38,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594666192] [2021-11-09 09:50:38,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:50:38,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:50:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:38,044 INFO L87 Difference]: Start difference. First operand 9200 states and 12046 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:45,686 INFO L93 Difference]: Finished difference Result 10397 states and 13865 transitions. [2021-11-09 09:50:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:50:45,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-09 09:50:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:45,725 INFO L225 Difference]: With dead ends: 10397 [2021-11-09 09:50:45,725 INFO L226 Difference]: Without dead ends: 10009 [2021-11-09 09:50:45,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:50:45,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10009 states. [2021-11-09 09:50:46,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10009 to 9681. [2021-11-09 09:50:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9681 states, 9333 states have (on average 1.3131897567770277) internal successors, (12256), 9384 states have internal predecessors, (12256), 238 states have call successors, (238), 8 states have call predecessors, (238), 8 states have return successors, (436), 288 states have call predecessors, (436), 238 states have call successors, (436) [2021-11-09 09:50:46,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9681 states to 9681 states and 12930 transitions. [2021-11-09 09:50:46,487 INFO L78 Accepts]: Start accepts. Automaton has 9681 states and 12930 transitions. Word has length 59 [2021-11-09 09:50:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:46,488 INFO L470 AbstractCegarLoop]: Abstraction has 9681 states and 12930 transitions. [2021-11-09 09:50:46,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9681 states and 12930 transitions. [2021-11-09 09:50:46,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 09:50:46,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:46,507 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:46,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:46,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-09 09:50:46,732 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash -809495661, now seen corresponding path program 1 times [2021-11-09 09:50:46,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:46,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820118346] [2021-11-09 09:50:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:46,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-09 09:50:46,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:46,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820118346] [2021-11-09 09:50:46,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820118346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:50:46,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:50:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:50:46,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510548174] [2021-11-09 09:50:46,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:50:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:50:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:46,951 INFO L87 Difference]: Start difference. First operand 9681 states and 12930 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:47,442 INFO L93 Difference]: Finished difference Result 16744 states and 22535 transitions. [2021-11-09 09:50:47,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:50:47,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-09 09:50:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:47,484 INFO L225 Difference]: With dead ends: 16744 [2021-11-09 09:50:47,484 INFO L226 Difference]: Without dead ends: 9681 [2021-11-09 09:50:47,521 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:50:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9681 states. [2021-11-09 09:50:48,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9681 to 9681. [2021-11-09 09:50:48,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9681 states, 9333 states have (on average 1.312546876674167) internal successors, (12250), 9384 states have internal predecessors, (12250), 238 states have call successors, (238), 8 states have call predecessors, (238), 8 states have return successors, (436), 288 states have call predecessors, (436), 238 states have call successors, (436) [2021-11-09 09:50:48,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9681 states to 9681 states and 12924 transitions. [2021-11-09 09:50:48,253 INFO L78 Accepts]: Start accepts. Automaton has 9681 states and 12924 transitions. Word has length 80 [2021-11-09 09:50:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:48,253 INFO L470 AbstractCegarLoop]: Abstraction has 9681 states and 12924 transitions. [2021-11-09 09:50:48,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 9681 states and 12924 transitions. [2021-11-09 09:50:48,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-09 09:50:48,271 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:48,293 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:48,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:50:48,293 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:48,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1537253571, now seen corresponding path program 1 times [2021-11-09 09:50:48,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:48,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845127982] [2021-11-09 09:50:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:48,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-09 09:50:48,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:48,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845127982] [2021-11-09 09:50:48,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845127982] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:48,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183766560] [2021-11-09 09:50:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:48,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:48,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:48,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:50:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:49,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1962 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:50:49,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:50:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-09 09:50:50,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183766560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:50,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:50:50,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2021-11-09 09:50:50,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148272462] [2021-11-09 09:50:50,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:50:50,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:50:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:50:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:50:50,225 INFO L87 Difference]: Start difference. First operand 9681 states and 12924 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:51,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:50:51,542 INFO L93 Difference]: Finished difference Result 20509 states and 27149 transitions. [2021-11-09 09:50:51,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:50:51,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-09 09:50:51,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:50:51,595 INFO L225 Difference]: With dead ends: 20509 [2021-11-09 09:50:51,595 INFO L226 Difference]: Without dead ends: 13442 [2021-11-09 09:50:51,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:50:51,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13442 states. [2021-11-09 09:50:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13442 to 11381. [2021-11-09 09:50:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11381 states, 11005 states have (on average 1.3040436165379372) internal successors, (14351), 11036 states have internal predecessors, (14351), 266 states have call successors, (266), 8 states have call predecessors, (266), 8 states have return successors, (490), 336 states have call predecessors, (490), 266 states have call successors, (490) [2021-11-09 09:50:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11381 states to 11381 states and 15107 transitions. [2021-11-09 09:50:52,311 INFO L78 Accepts]: Start accepts. Automaton has 11381 states and 15107 transitions. Word has length 80 [2021-11-09 09:50:52,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:50:52,312 INFO L470 AbstractCegarLoop]: Abstraction has 11381 states and 15107 transitions. [2021-11-09 09:50:52,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:50:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11381 states and 15107 transitions. [2021-11-09 09:50:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 09:50:52,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:50:52,336 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:50:52,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:50:52,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 09:50:52,550 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:50:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:50:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1475615783, now seen corresponding path program 2 times [2021-11-09 09:50:52,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:50:52,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610238433] [2021-11-09 09:50:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:50:52,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:50:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:50:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:50:53,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:50:53,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610238433] [2021-11-09 09:50:53,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610238433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:50:53,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172557954] [2021-11-09 09:50:53,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:50:53,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:50:53,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:50:53,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:50:53,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:51:13,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:51:13,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:13,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:51:13,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:51:13,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172557954] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:13,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:51:13,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-11-09 09:51:13,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088363664] [2021-11-09 09:51:13,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:51:13,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:51:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:13,803 INFO L87 Difference]: Start difference. First operand 11381 states and 15107 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:14,990 INFO L93 Difference]: Finished difference Result 21248 states and 28129 transitions. [2021-11-09 09:51:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:51:14,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-09 09:51:14,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:15,037 INFO L225 Difference]: With dead ends: 21248 [2021-11-09 09:51:15,038 INFO L226 Difference]: Without dead ends: 13353 [2021-11-09 09:51:15,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:51:15,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13353 states. [2021-11-09 09:51:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13353 to 12253. [2021-11-09 09:51:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12253 states, 11863 states have (on average 1.3007670909550704) internal successors, (15431), 11884 states have internal predecessors, (15431), 280 states have call successors, (280), 8 states have call predecessors, (280), 8 states have return successors, (517), 360 states have call predecessors, (517), 280 states have call successors, (517) [2021-11-09 09:51:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 16228 transitions. [2021-11-09 09:51:15,634 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 16228 transitions. Word has length 88 [2021-11-09 09:51:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:15,635 INFO L470 AbstractCegarLoop]: Abstraction has 12253 states and 16228 transitions. [2021-11-09 09:51:15,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 16228 transitions. [2021-11-09 09:51:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 09:51:15,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:15,654 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:15,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:15,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:15,880 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:51:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash 164524071, now seen corresponding path program 3 times [2021-11-09 09:51:15,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:15,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945375917] [2021-11-09 09:51:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:15,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:51:16,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:16,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945375917] [2021-11-09 09:51:16,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945375917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:16,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787468073] [2021-11-09 09:51:16,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:51:16,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:16,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:16,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:16,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:51:36,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 09:51:36,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:51:36,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:51:36,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-09 09:51:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787468073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:51:38,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-11-09 09:51:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286162936] [2021-11-09 09:51:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:51:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:51:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:51:38,483 INFO L87 Difference]: Start difference. First operand 12253 states and 16228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:51:53,245 INFO L93 Difference]: Finished difference Result 20534 states and 26913 transitions. [2021-11-09 09:51:53,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:51:53,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-09 09:51:53,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:51:53,307 INFO L225 Difference]: With dead ends: 20534 [2021-11-09 09:51:53,308 INFO L226 Difference]: Without dead ends: 20531 [2021-11-09 09:51:53,323 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:51:53,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20531 states. [2021-11-09 09:51:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20531 to 20482. [2021-11-09 09:51:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20482 states, 19919 states have (on average 1.2824438977860335) internal successors, (25545), 19941 states have internal predecessors, (25545), 447 states have call successors, (447), 14 states have call predecessors, (447), 14 states have return successors, (854), 526 states have call predecessors, (854), 447 states have call successors, (854) [2021-11-09 09:51:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20482 states to 20482 states and 26846 transitions. [2021-11-09 09:51:54,251 INFO L78 Accepts]: Start accepts. Automaton has 20482 states and 26846 transitions. Word has length 92 [2021-11-09 09:51:54,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:51:54,252 INFO L470 AbstractCegarLoop]: Abstraction has 20482 states and 26846 transitions. [2021-11-09 09:51:54,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:51:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 20482 states and 26846 transitions. [2021-11-09 09:51:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-09 09:51:54,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:51:54,282 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:51:54,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:51:54,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-09 09:51:54,496 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:51:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:51:54,497 INFO L85 PathProgramCache]: Analyzing trace with hash 847020707, now seen corresponding path program 1 times [2021-11-09 09:51:54,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:51:54,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011351452] [2021-11-09 09:51:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:54,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:51:54,587 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:51:54,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [591328922] [2021-11-09 09:51:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:51:54,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:51:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:51:54,590 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:51:54,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:51:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:51:55,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:51:55,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:51:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-09 09:51:56,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:51:56,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011351452] [2021-11-09 09:51:56,533 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:51:56,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591328922] [2021-11-09 09:51:56,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591328922] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:51:56,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:51:56,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-09 09:51:56,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602930135] [2021-11-09 09:51:56,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:51:56,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:51:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:51:56,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:51:56,536 INFO L87 Difference]: Start difference. First operand 20482 states and 26846 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:52:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:07,953 INFO L93 Difference]: Finished difference Result 40974 states and 53705 transitions. [2021-11-09 09:52:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:52:07,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2021-11-09 09:52:07,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:08,037 INFO L225 Difference]: With dead ends: 40974 [2021-11-09 09:52:08,037 INFO L226 Difference]: Without dead ends: 20548 [2021-11-09 09:52:08,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:52:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20548 states. [2021-11-09 09:52:08,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20548 to 20526. [2021-11-09 09:52:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20526 states, 19963 states have (on average 1.2818213695336371) internal successors, (25589), 19985 states have internal predecessors, (25589), 447 states have call successors, (447), 14 states have call predecessors, (447), 14 states have return successors, (854), 526 states have call predecessors, (854), 447 states have call successors, (854) [2021-11-09 09:52:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20526 states to 20526 states and 26890 transitions. [2021-11-09 09:52:08,921 INFO L78 Accepts]: Start accepts. Automaton has 20526 states and 26890 transitions. Word has length 113 [2021-11-09 09:52:08,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:08,921 INFO L470 AbstractCegarLoop]: Abstraction has 20526 states and 26890 transitions. [2021-11-09 09:52:08,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:52:08,922 INFO L276 IsEmpty]: Start isEmpty. Operand 20526 states and 26890 transitions. [2021-11-09 09:52:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 09:52:08,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:08,942 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:08,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:09,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:09,145 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:52:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1678958385, now seen corresponding path program 2 times [2021-11-09 09:52:09,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:09,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846339923] [2021-11-09 09:52:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:09,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:09,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:09,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165739926] [2021-11-09 09:52:09,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:52:09,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:09,227 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:09,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:52:10,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-09 09:52:10,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:10,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:52:10,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 09:52:11,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:11,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846339923] [2021-11-09 09:52:11,920 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:11,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165739926] [2021-11-09 09:52:11,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165739926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:52:11,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:52:11,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:52:11,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799986064] [2021-11-09 09:52:11,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:52:11,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:52:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:52:11,922 INFO L87 Difference]: Start difference. First operand 20526 states and 26890 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:52:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:24,242 INFO L93 Difference]: Finished difference Result 20678 states and 27120 transitions. [2021-11-09 09:52:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:52:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 119 [2021-11-09 09:52:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:24,302 INFO L225 Difference]: With dead ends: 20678 [2021-11-09 09:52:24,302 INFO L226 Difference]: Without dead ends: 20476 [2021-11-09 09:52:24,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:52:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20476 states. [2021-11-09 09:52:25,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20476 to 19850. [2021-11-09 09:52:25,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19850 states, 19385 states have (on average 1.2724787206603043) internal successors, (24667), 19418 states have internal predecessors, (24667), 448 states have call successors, (448), 16 states have call predecessors, (448), 16 states have return successors, (856), 415 states have call predecessors, (856), 448 states have call successors, (856) [2021-11-09 09:52:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19850 states to 19850 states and 25971 transitions. [2021-11-09 09:52:25,383 INFO L78 Accepts]: Start accepts. Automaton has 19850 states and 25971 transitions. Word has length 119 [2021-11-09 09:52:25,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:25,383 INFO L470 AbstractCegarLoop]: Abstraction has 19850 states and 25971 transitions. [2021-11-09 09:52:25,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:52:25,384 INFO L276 IsEmpty]: Start isEmpty. Operand 19850 states and 25971 transitions. [2021-11-09 09:52:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-09 09:52:25,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:25,418 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:25,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:25,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:52:25,620 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:52:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:25,621 INFO L85 PathProgramCache]: Analyzing trace with hash -56181603, now seen corresponding path program 1 times [2021-11-09 09:52:25,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:25,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105912974] [2021-11-09 09:52:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:25,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:25,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:25,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540462630] [2021-11-09 09:52:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:25,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:25,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:25,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:52:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:52:27,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:52:27,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 09:52:28,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:28,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105912974] [2021-11-09 09:52:28,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:28,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540462630] [2021-11-09 09:52:28,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540462630] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:28,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:28,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 09:52:28,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741356607] [2021-11-09 09:52:28,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:52:28,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:52:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:52:28,342 INFO L87 Difference]: Start difference. First operand 19850 states and 25971 transitions. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:52:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:30,144 INFO L93 Difference]: Finished difference Result 35208 states and 46330 transitions. [2021-11-09 09:52:30,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:52:30,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 155 [2021-11-09 09:52:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:30,232 INFO L225 Difference]: With dead ends: 35208 [2021-11-09 09:52:30,233 INFO L226 Difference]: Without dead ends: 22909 [2021-11-09 09:52:30,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:52:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22909 states. [2021-11-09 09:52:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22909 to 21381. [2021-11-09 09:52:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21381 states, 20890 states have (on average 1.2688846337960746) internal successors, (26507), 20923 states have internal predecessors, (26507), 474 states have call successors, (474), 16 states have call predecessors, (474), 16 states have return successors, (907), 441 states have call predecessors, (907), 474 states have call successors, (907) [2021-11-09 09:52:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21381 states to 21381 states and 27888 transitions. [2021-11-09 09:52:31,441 INFO L78 Accepts]: Start accepts. Automaton has 21381 states and 27888 transitions. Word has length 155 [2021-11-09 09:52:31,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:31,442 INFO L470 AbstractCegarLoop]: Abstraction has 21381 states and 27888 transitions. [2021-11-09 09:52:31,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:52:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 21381 states and 27888 transitions. [2021-11-09 09:52:31,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-09 09:52:31,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:31,475 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:31,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:52:31,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:31,688 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:52:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash 187405711, now seen corresponding path program 2 times [2021-11-09 09:52:31,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:31,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984748340] [2021-11-09 09:52:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:31,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:31,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:31,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759119474] [2021-11-09 09:52:31,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:52:31,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:31,769 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:31,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:52:52,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:52:52,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:52:52,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2833 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:52:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:52:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 09:52:53,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:52:53,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984748340] [2021-11-09 09:52:53,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:52:53,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759119474] [2021-11-09 09:52:53,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759119474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:52:53,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:52:53,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:52:53,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148224138] [2021-11-09 09:52:53,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:52:53,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:52:53,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:52:53,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:52:53,595 INFO L87 Difference]: Start difference. First operand 21381 states and 27888 transitions. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:52:55,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:52:55,854 INFO L93 Difference]: Finished difference Result 36739 states and 48247 transitions. [2021-11-09 09:52:55,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:52:55,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 159 [2021-11-09 09:52:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:52:55,919 INFO L225 Difference]: With dead ends: 36739 [2021-11-09 09:52:55,919 INFO L226 Difference]: Without dead ends: 24440 [2021-11-09 09:52:55,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:52:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24440 states. [2021-11-09 09:52:56,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24440 to 22912. [2021-11-09 09:52:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22912 states, 22395 states have (on average 1.2657736101808439) internal successors, (28347), 22428 states have internal predecessors, (28347), 500 states have call successors, (500), 16 states have call predecessors, (500), 16 states have return successors, (958), 467 states have call predecessors, (958), 500 states have call successors, (958) [2021-11-09 09:52:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22912 states to 22912 states and 29805 transitions. [2021-11-09 09:52:57,023 INFO L78 Accepts]: Start accepts. Automaton has 22912 states and 29805 transitions. Word has length 159 [2021-11-09 09:52:57,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:52:57,023 INFO L470 AbstractCegarLoop]: Abstraction has 22912 states and 29805 transitions. [2021-11-09 09:52:57,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:52:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 22912 states and 29805 transitions. [2021-11-09 09:52:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-09 09:52:57,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:52:57,060 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:52:57,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-09 09:52:57,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:57,276 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:52:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:52:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash 685155713, now seen corresponding path program 3 times [2021-11-09 09:52:57,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:52:57,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138294548] [2021-11-09 09:52:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:52:57,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:52:57,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:52:57,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635418525] [2021-11-09 09:52:57,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:52:57,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:52:57,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:52:57,367 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:52:57,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:53:16,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-09 09:53:16,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:53:16,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:53:16,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:53:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-09 09:53:17,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:17,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138294548] [2021-11-09 09:53:17,180 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:53:17,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635418525] [2021-11-09 09:53:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635418525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:17,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:17,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:53:17,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732735452] [2021-11-09 09:53:17,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:53:17,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:17,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:53:17,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:53:17,183 INFO L87 Difference]: Start difference. First operand 22912 states and 29805 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:53:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:17,846 INFO L93 Difference]: Finished difference Result 23845 states and 31195 transitions. [2021-11-09 09:53:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:53:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 163 [2021-11-09 09:53:17,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:17,903 INFO L225 Difference]: With dead ends: 23845 [2021-11-09 09:53:17,904 INFO L226 Difference]: Without dead ends: 20009 [2021-11-09 09:53:17,926 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:53:17,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2021-11-09 09:53:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 20000. [2021-11-09 09:53:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20000 states, 19535 states have (on average 1.272843614026107) internal successors, (24865), 19568 states have internal predecessors, (24865), 448 states have call successors, (448), 16 states have call predecessors, (448), 16 states have return successors, (856), 415 states have call predecessors, (856), 448 states have call successors, (856) [2021-11-09 09:53:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20000 states to 20000 states and 26169 transitions. [2021-11-09 09:53:18,985 INFO L78 Accepts]: Start accepts. Automaton has 20000 states and 26169 transitions. Word has length 163 [2021-11-09 09:53:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:18,985 INFO L470 AbstractCegarLoop]: Abstraction has 20000 states and 26169 transitions. [2021-11-09 09:53:18,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:53:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 20000 states and 26169 transitions. [2021-11-09 09:53:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-09 09:53:19,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:19,010 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:19,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:53:19,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:53:19,236 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:53:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 626619699, now seen corresponding path program 1 times [2021-11-09 09:53:19,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:19,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472574620] [2021-11-09 09:53:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:19,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-09 09:53:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:19,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:53:19,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-09 09:53:19,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:19,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472574620] [2021-11-09 09:53:19,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472574620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:19,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:19,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:53:19,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712634021] [2021-11-09 09:53:19,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:53:19,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:53:19,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:53:19,567 INFO L87 Difference]: Start difference. First operand 20000 states and 26169 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:53:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:38,951 INFO L93 Difference]: Finished difference Result 29661 states and 39820 transitions. [2021-11-09 09:53:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:53:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 167 [2021-11-09 09:53:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:39,023 INFO L225 Difference]: With dead ends: 29661 [2021-11-09 09:53:39,023 INFO L226 Difference]: Without dead ends: 20280 [2021-11-09 09:53:39,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:53:39,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2021-11-09 09:53:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 20063. [2021-11-09 09:53:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 19595 states have (on average 1.2723143659096707) internal successors, (24931), 19631 states have internal predecessors, (24931), 448 states have call successors, (448), 16 states have call predecessors, (448), 19 states have return successors, (900), 415 states have call predecessors, (900), 448 states have call successors, (900) [2021-11-09 09:53:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 26279 transitions. [2021-11-09 09:53:40,019 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 26279 transitions. Word has length 167 [2021-11-09 09:53:40,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:40,019 INFO L470 AbstractCegarLoop]: Abstraction has 20063 states and 26279 transitions. [2021-11-09 09:53:40,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:53:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 26279 transitions. [2021-11-09 09:53:40,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 09:53:40,052 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:40,053 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:40,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:53:40,053 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:53:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:40,054 INFO L85 PathProgramCache]: Analyzing trace with hash 408906990, now seen corresponding path program 1 times [2021-11-09 09:53:40,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:40,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520692753] [2021-11-09 09:53:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:40,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:40,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-09 09:53:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:53:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:40,509 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-09 09:53:40,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:40,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520692753] [2021-11-09 09:53:40,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520692753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:40,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:40,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:53:40,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692002768] [2021-11-09 09:53:40,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:53:40,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:53:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:53:40,513 INFO L87 Difference]: Start difference. First operand 20063 states and 26279 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:54:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:54:16,629 INFO L93 Difference]: Finished difference Result 72350 states and 98836 transitions. [2021-11-09 09:54:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:54:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 169 [2021-11-09 09:54:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:54:16,850 INFO L225 Difference]: With dead ends: 72350 [2021-11-09 09:54:16,850 INFO L226 Difference]: Without dead ends: 62906 [2021-11-09 09:54:16,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:54:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62906 states. [2021-11-09 09:54:18,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62906 to 21053. [2021-11-09 09:54:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21053 states, 20550 states have (on average 1.2732846715328467) internal successors, (26166), 20591 states have internal predecessors, (26166), 483 states have call successors, (483), 16 states have call predecessors, (483), 19 states have return successors, (970), 445 states have call predecessors, (970), 483 states have call successors, (970) [2021-11-09 09:54:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21053 states to 21053 states and 27619 transitions. [2021-11-09 09:54:19,027 INFO L78 Accepts]: Start accepts. Automaton has 21053 states and 27619 transitions. Word has length 169 [2021-11-09 09:54:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:54:19,027 INFO L470 AbstractCegarLoop]: Abstraction has 21053 states and 27619 transitions. [2021-11-09 09:54:19,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:54:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 21053 states and 27619 transitions. [2021-11-09 09:54:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 09:54:19,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:54:19,056 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:54:19,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:54:19,056 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:54:19,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:54:19,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1238455952, now seen corresponding path program 1 times [2021-11-09 09:54:19,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:54:19,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273475009] [2021-11-09 09:54:19,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:54:19,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:54:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-09 09:54:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:19,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:54:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-09 09:54:19,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:54:19,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273475009] [2021-11-09 09:54:19,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273475009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:54:19,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:54:19,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:54:19,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671093175] [2021-11-09 09:54:19,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:54:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:54:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:54:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:54:19,460 INFO L87 Difference]: Start difference. First operand 21053 states and 27619 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:54:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:54:51,309 INFO L93 Difference]: Finished difference Result 49980 states and 67900 transitions. [2021-11-09 09:54:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:54:51,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 169 [2021-11-09 09:54:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:54:51,421 INFO L225 Difference]: With dead ends: 49980 [2021-11-09 09:54:51,421 INFO L226 Difference]: Without dead ends: 39546 [2021-11-09 09:54:51,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:54:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39546 states. [2021-11-09 09:54:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39546 to 21047. [2021-11-09 09:54:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21047 states, 20544 states have (on average 1.2732184579439252) internal successors, (26157), 20585 states have internal predecessors, (26157), 483 states have call successors, (483), 16 states have call predecessors, (483), 19 states have return successors, (970), 445 states have call predecessors, (970), 483 states have call successors, (970) [2021-11-09 09:54:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21047 states to 21047 states and 27610 transitions. [2021-11-09 09:54:52,913 INFO L78 Accepts]: Start accepts. Automaton has 21047 states and 27610 transitions. Word has length 169 [2021-11-09 09:54:52,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:54:52,913 INFO L470 AbstractCegarLoop]: Abstraction has 21047 states and 27610 transitions. [2021-11-09 09:54:52,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-09 09:54:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 21047 states and 27610 transitions. [2021-11-09 09:54:52,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 09:54:52,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:54:52,944 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:54:52,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:54:52,945 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:54:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:54:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1884174036, now seen corresponding path program 1 times [2021-11-09 09:54:52,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:54:52,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192011015] [2021-11-09 09:54:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:54:52,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:54:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:53,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-09 09:54:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:54:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:54:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-09 09:54:53,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:54:53,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192011015] [2021-11-09 09:54:53,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192011015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:54:53,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:54:53,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:54:53,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288235364] [2021-11-09 09:54:53,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:54:53,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:54:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:54:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:54:53,408 INFO L87 Difference]: Start difference. First operand 21047 states and 27610 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:55:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:55:31,744 INFO L93 Difference]: Finished difference Result 41881 states and 56707 transitions. [2021-11-09 09:55:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:55:31,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2021-11-09 09:55:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:55:31,965 INFO L225 Difference]: With dead ends: 41881 [2021-11-09 09:55:31,966 INFO L226 Difference]: Without dead ends: 31453 [2021-11-09 09:55:31,998 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:55:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31453 states. [2021-11-09 09:55:33,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31453 to 21047. [2021-11-09 09:55:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21047 states, 20544 states have (on average 1.2730724299065421) internal successors, (26154), 20585 states have internal predecessors, (26154), 483 states have call successors, (483), 16 states have call predecessors, (483), 19 states have return successors, (970), 445 states have call predecessors, (970), 483 states have call successors, (970) [2021-11-09 09:55:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21047 states to 21047 states and 27607 transitions. [2021-11-09 09:55:33,495 INFO L78 Accepts]: Start accepts. Automaton has 21047 states and 27607 transitions. Word has length 169 [2021-11-09 09:55:33,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:55:33,496 INFO L470 AbstractCegarLoop]: Abstraction has 21047 states and 27607 transitions. [2021-11-09 09:55:33,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:55:33,496 INFO L276 IsEmpty]: Start isEmpty. Operand 21047 states and 27607 transitions. [2021-11-09 09:55:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 09:55:33,528 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:55:33,529 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:55:33,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:55:33,529 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:55:33,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:55:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash 721849518, now seen corresponding path program 1 times [2021-11-09 09:55:33,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:55:33,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219612405] [2021-11-09 09:55:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:55:33,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:55:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-09 09:55:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:55:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:55:34,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:55:34,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219612405] [2021-11-09 09:55:34,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219612405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:55:34,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133876819] [2021-11-09 09:55:34,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:55:34,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:55:34,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:55:34,437 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:55:34,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:55:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:36,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:55:36,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:55:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:55:37,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133876819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:55:37,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:55:37,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2021-11-09 09:55:37,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539143910] [2021-11-09 09:55:37,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-09 09:55:37,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:55:37,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-09 09:55:37,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:55:37,454 INFO L87 Difference]: Start difference. First operand 21047 states and 27607 transitions. Second operand has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 11 states have internal predecessors, (208), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:56:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:56:10,061 INFO L93 Difference]: Finished difference Result 34757 states and 46492 transitions. [2021-11-09 09:56:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:56:10,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 11 states have internal predecessors, (208), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 169 [2021-11-09 09:56:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:56:10,165 INFO L225 Difference]: With dead ends: 34757 [2021-11-09 09:56:10,165 INFO L226 Difference]: Without dead ends: 24323 [2021-11-09 09:56:10,209 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-11-09 09:56:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24323 states. [2021-11-09 09:56:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24323 to 22578. [2021-11-09 09:56:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22578 states, 22049 states have (on average 1.2696267404417434) internal successors, (27994), 22090 states have internal predecessors, (27994), 509 states have call successors, (509), 16 states have call predecessors, (509), 19 states have return successors, (1022), 471 states have call predecessors, (1022), 509 states have call successors, (1022) [2021-11-09 09:56:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22578 states to 22578 states and 29525 transitions. [2021-11-09 09:56:11,794 INFO L78 Accepts]: Start accepts. Automaton has 22578 states and 29525 transitions. Word has length 169 [2021-11-09 09:56:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:56:11,794 INFO L470 AbstractCegarLoop]: Abstraction has 22578 states and 29525 transitions. [2021-11-09 09:56:11,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.333333333333332) internal successors, (208), 11 states have internal predecessors, (208), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:56:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand 22578 states and 29525 transitions. [2021-11-09 09:56:11,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-09 09:56:11,829 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:56:11,829 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:56:11,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-09 09:56:12,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:56:12,031 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:56:12,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:56:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash -731809360, now seen corresponding path program 1 times [2021-11-09 09:56:12,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:56:12,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87994475] [2021-11-09 09:56:12,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:56:12,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:56:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:12,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-09 09:56:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:56:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:56:13,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:56:13,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87994475] [2021-11-09 09:56:13,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87994475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:56:13,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230544853] [2021-11-09 09:56:13,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:56:13,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:56:13,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:56:13,010 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:56:13,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 09:56:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:14,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 2514 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:56:14,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:56:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:56:15,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230544853] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:56:15,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:56:15,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2021-11-09 09:56:15,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605331618] [2021-11-09 09:56:15,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 09:56:15,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:56:15,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 09:56:15,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:56:15,975 INFO L87 Difference]: Start difference. First operand 22578 states and 29525 transitions. Second operand has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 12 states have internal predecessors, (212), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:56:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:56:48,459 INFO L93 Difference]: Finished difference Result 36288 states and 48435 transitions. [2021-11-09 09:56:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:56:48,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 12 states have internal predecessors, (212), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 173 [2021-11-09 09:56:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:56:48,529 INFO L225 Difference]: With dead ends: 36288 [2021-11-09 09:56:48,529 INFO L226 Difference]: Without dead ends: 25854 [2021-11-09 09:56:48,561 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:56:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25854 states. [2021-11-09 09:56:49,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25854 to 24109. [2021-11-09 09:56:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24109 states, 23554 states have (on average 1.2666213806572133) internal successors, (29834), 23595 states have internal predecessors, (29834), 535 states have call successors, (535), 16 states have call predecessors, (535), 19 states have return successors, (1074), 497 states have call predecessors, (1074), 535 states have call successors, (1074) [2021-11-09 09:56:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24109 states to 24109 states and 31443 transitions. [2021-11-09 09:56:49,971 INFO L78 Accepts]: Start accepts. Automaton has 24109 states and 31443 transitions. Word has length 173 [2021-11-09 09:56:49,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:56:49,972 INFO L470 AbstractCegarLoop]: Abstraction has 24109 states and 31443 transitions. [2021-11-09 09:56:49,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.307692307692307) internal successors, (212), 12 states have internal predecessors, (212), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:56:49,973 INFO L276 IsEmpty]: Start isEmpty. Operand 24109 states and 31443 transitions. [2021-11-09 09:56:50,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-09 09:56:50,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:56:50,029 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:56:50,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:56:50,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:56:50,256 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:56:50,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:56:50,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1606355154, now seen corresponding path program 1 times [2021-11-09 09:56:50,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:56:50,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990526744] [2021-11-09 09:56:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:56:50,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:56:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-09 09:56:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:56:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:50,744 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-09 09:56:50,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:56:50,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990526744] [2021-11-09 09:56:50,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990526744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:56:50,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967064985] [2021-11-09 09:56:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:56:50,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:56:50,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:56:50,747 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:56:50,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 09:56:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:56:52,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-09 09:56:52,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:56:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:56:54,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967064985] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:56:54,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:56:54,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12] total 15 [2021-11-09 09:56:54,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042085445] [2021-11-09 09:56:54,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:56:54,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:56:54,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:56:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:56:54,604 INFO L87 Difference]: Start difference. First operand 24109 states and 31443 transitions. Second operand has 15 states, 15 states have (on average 19.133333333333333) internal successors, (287), 14 states have internal predecessors, (287), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-09 09:57:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:57:29,343 INFO L93 Difference]: Finished difference Result 39213 states and 52274 transitions. [2021-11-09 09:57:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:57:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 19.133333333333333) internal successors, (287), 14 states have internal predecessors, (287), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 177 [2021-11-09 09:57:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:57:29,435 INFO L225 Difference]: With dead ends: 39213 [2021-11-09 09:57:29,435 INFO L226 Difference]: Without dead ends: 28779 [2021-11-09 09:57:29,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:57:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28779 states. [2021-11-09 09:57:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28779 to 26343. [2021-11-09 09:57:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26343 states, 25734 states have (on average 1.2634646770809046) internal successors, (32514), 25779 states have internal predecessors, (32514), 589 states have call successors, (589), 16 states have call predecessors, (589), 19 states have return successors, (1182), 547 states have call predecessors, (1182), 589 states have call successors, (1182) [2021-11-09 09:57:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26343 states to 26343 states and 34285 transitions. [2021-11-09 09:57:31,339 INFO L78 Accepts]: Start accepts. Automaton has 26343 states and 34285 transitions. Word has length 177 [2021-11-09 09:57:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:57:31,339 INFO L470 AbstractCegarLoop]: Abstraction has 26343 states and 34285 transitions. [2021-11-09 09:57:31,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 19.133333333333333) internal successors, (287), 14 states have internal predecessors, (287), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-09 09:57:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 26343 states and 34285 transitions. [2021-11-09 09:57:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:57:31,382 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:57:31,383 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 3, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:57:31,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-09 09:57:31,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 09:57:31,584 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:57:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:57:31,584 INFO L85 PathProgramCache]: Analyzing trace with hash 92803435, now seen corresponding path program 1 times [2021-11-09 09:57:31,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:57:31,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698961222] [2021-11-09 09:57:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:57:31,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:57:31,680 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:57:31,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621269475] [2021-11-09 09:57:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:57:31,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:57:31,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:57:31,682 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:57:31,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-09 09:57:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:57:33,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:57:33,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:57:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-09 09:57:34,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:57:34,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698961222] [2021-11-09 09:57:34,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:57:34,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621269475] [2021-11-09 09:57:34,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621269475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:57:34,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:57:34,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-09 09:57:34,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993214366] [2021-11-09 09:57:34,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:57:34,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:57:34,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:57:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:57:34,567 INFO L87 Difference]: Start difference. First operand 26343 states and 34285 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:57:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:57:45,430 INFO L93 Difference]: Finished difference Result 52721 states and 68617 transitions. [2021-11-09 09:57:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:57:45,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2021-11-09 09:57:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:57:45,513 INFO L225 Difference]: With dead ends: 52721 [2021-11-09 09:57:45,513 INFO L226 Difference]: Without dead ends: 26436 [2021-11-09 09:57:45,588 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:57:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2021-11-09 09:57:48,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 26405. [2021-11-09 09:57:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26405 states, 25796 states have (on average 1.262831446735928) internal successors, (32576), 25841 states have internal predecessors, (32576), 589 states have call successors, (589), 16 states have call predecessors, (589), 19 states have return successors, (1182), 547 states have call predecessors, (1182), 589 states have call successors, (1182) [2021-11-09 09:57:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26405 states to 26405 states and 34347 transitions. [2021-11-09 09:57:48,184 INFO L78 Accepts]: Start accepts. Automaton has 26405 states and 34347 transitions. Word has length 175 [2021-11-09 09:57:48,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:57:48,185 INFO L470 AbstractCegarLoop]: Abstraction has 26405 states and 34347 transitions. [2021-11-09 09:57:48,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:57:48,186 INFO L276 IsEmpty]: Start isEmpty. Operand 26405 states and 34347 transitions. [2021-11-09 09:57:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-09 09:57:48,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:57:48,288 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 4, 4, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:57:48,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-09 09:57:48,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-09 09:57:48,489 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:57:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:57:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 688499463, now seen corresponding path program 2 times [2021-11-09 09:57:48,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:57:48,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254434478] [2021-11-09 09:57:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:57:48,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:57:48,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:57:48,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725756289] [2021-11-09 09:57:48,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:57:48,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:57:48,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:57:48,634 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:57:48,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-09 09:58:11,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:58:11,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:58:11,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2875 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:58:11,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:58:12,527 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-09 09:58:12,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:58:12,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254434478] [2021-11-09 09:58:12,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:58:12,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725756289] [2021-11-09 09:58:12,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725756289] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:58:12,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:58:12,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:58:12,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78343830] [2021-11-09 09:58:12,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:58:12,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:58:12,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:58:12,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:58:12,531 INFO L87 Difference]: Start difference. First operand 26405 states and 34347 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:58:21,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:58:21,401 INFO L93 Difference]: Finished difference Result 52843 states and 68739 transitions. [2021-11-09 09:58:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:58:21,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 177 [2021-11-09 09:58:21,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:58:21,487 INFO L225 Difference]: With dead ends: 52843 [2021-11-09 09:58:21,487 INFO L226 Difference]: Without dead ends: 26498 [2021-11-09 09:58:21,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:58:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26498 states. [2021-11-09 09:58:23,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26498 to 26467. [2021-11-09 09:58:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26467 states, 25858 states have (on average 1.2622012529971383) internal successors, (32638), 25903 states have internal predecessors, (32638), 589 states have call successors, (589), 16 states have call predecessors, (589), 19 states have return successors, (1182), 547 states have call predecessors, (1182), 589 states have call successors, (1182) [2021-11-09 09:58:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26467 states to 26467 states and 34409 transitions. [2021-11-09 09:58:23,529 INFO L78 Accepts]: Start accepts. Automaton has 26467 states and 34409 transitions. Word has length 177 [2021-11-09 09:58:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:58:23,529 INFO L470 AbstractCegarLoop]: Abstraction has 26467 states and 34409 transitions. [2021-11-09 09:58:23,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-09 09:58:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 26467 states and 34409 transitions. [2021-11-09 09:58:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-09 09:58:23,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:58:23,573 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:58:23,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:58:23,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:58:23,774 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:58:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:58:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1214303748, now seen corresponding path program 2 times [2021-11-09 09:58:23,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:58:23,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718820857] [2021-11-09 09:58:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:58:23,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:58:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:58:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-09 09:58:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:58:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:58:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:58:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:58:25,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:58:25,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718820857] [2021-11-09 09:58:25,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718820857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:58:25,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038757304] [2021-11-09 09:58:25,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:58:25,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:58:25,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:58:25,043 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:58:25,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-09 09:58:49,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:58:49,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:58:49,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:58:49,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:58:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:58:51,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038757304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:58:51,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:58:51,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15 [2021-11-09 09:58:51,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829622519] [2021-11-09 09:58:51,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-09 09:58:51,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:58:51,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-09 09:58:51,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:58:51,376 INFO L87 Difference]: Start difference. First operand 26467 states and 34409 transitions. Second operand has 15 states, 15 states have (on average 14.666666666666666) internal successors, (220), 14 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:59:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:59:38,232 INFO L93 Difference]: Finished difference Result 40916 states and 54353 transitions. [2021-11-09 09:59:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:59:38,233 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.666666666666666) internal successors, (220), 14 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 181 [2021-11-09 09:59:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:59:38,332 INFO L225 Difference]: With dead ends: 40916 [2021-11-09 09:59:38,332 INFO L226 Difference]: Without dead ends: 29767 [2021-11-09 09:59:38,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:59:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29767 states. [2021-11-09 09:59:40,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29767 to 28010. [2021-11-09 09:59:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28010 states, 27375 states have (on average 1.2599086757990867) internal successors, (34490), 27420 states have internal predecessors, (34490), 615 states have call successors, (615), 16 states have call predecessors, (615), 19 states have return successors, (1234), 573 states have call predecessors, (1234), 615 states have call successors, (1234) [2021-11-09 09:59:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28010 states to 28010 states and 36339 transitions. [2021-11-09 09:59:40,412 INFO L78 Accepts]: Start accepts. Automaton has 28010 states and 36339 transitions. Word has length 181 [2021-11-09 09:59:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:59:40,413 INFO L470 AbstractCegarLoop]: Abstraction has 28010 states and 36339 transitions. [2021-11-09 09:59:40,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.666666666666666) internal successors, (220), 14 states have internal predecessors, (220), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-09 09:59:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28010 states and 36339 transitions. [2021-11-09 09:59:40,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-09 09:59:40,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:59:40,457 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:59:40,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-09 09:59:40,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:59:40,664 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr257ASSERT_VIOLATIONERROR_FUNCTION === [snd_mixer_oss_get_recsrc2Err0ASSERT_VIOLATIONERROR_FUNCTION, snd_mixer_oss_get_recsrc2Err1ASSERT_VIOLATIONERROR_FUNCTION (and 258 more)] === [2021-11-09 09:59:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:59:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1316455565, now seen corresponding path program 1 times [2021-11-09 09:59:40,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:59:40,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940574476] [2021-11-09 09:59:40,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:59:40,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:59:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:59:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-09 09:59:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:59:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-09 09:59:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:59:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:59:42,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:59:42,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940574476] [2021-11-09 09:59:42,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940574476] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:59:42,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762710910] [2021-11-09 09:59:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:59:42,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:59:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:59:42,084 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:59:42,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f37e554e-d759-4682-b89a-45b16b341d37/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-09 09:59:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:59:44,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:59:44,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:59:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-09 09:59:45,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762710910] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:59:45,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:59:45,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16 [2021-11-09 09:59:45,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251574337] [2021-11-09 09:59:45,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-09 09:59:45,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:59:45,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-09 09:59:45,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:59:45,769 INFO L87 Difference]: Start difference. First operand 28010 states and 36339 transitions. Second operand has 16 states, 16 states have (on average 13.875) internal successors, (222), 15 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)