./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63bdee5cc43e6d0ce6e1fd7ff8178b7d4c48f0f239c647cbda6fb7b36603cc42 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:09:44,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:09:44,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:09:44,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:09:44,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:09:44,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:09:44,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:09:44,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:09:44,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:09:44,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:09:44,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:09:44,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:09:44,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:09:44,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:09:44,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:09:44,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:09:44,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:09:44,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:09:44,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:09:44,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:09:44,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:09:44,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:09:44,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:09:44,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:09:44,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:09:44,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:09:44,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:09:44,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:09:44,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:09:44,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:09:44,807 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:09:44,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:09:44,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:09:44,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:09:44,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:09:44,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:09:44,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:09:44,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:09:44,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:09:44,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:09:44,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:09:44,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:09:44,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:09:44,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:09:44,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:09:44,883 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:09:44,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:09:44,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:09:44,894 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:09:44,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:09:44,895 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:09:44,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:09:44,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:09:44,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:09:44,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:09:44,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:09:44,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:09:44,899 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:09:44,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:09:44,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:09:44,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:09:44,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:09:44,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:09:44,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:09:44,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:09:44,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:09:44,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:09:44,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:09:44,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:09:44,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:09:44,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:09:44,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:09:44,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:09:44,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:09:44,906 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_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63bdee5cc43e6d0ce6e1fd7ff8178b7d4c48f0f239c647cbda6fb7b36603cc42 [2021-11-22 15:09:45,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:09:45,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:09:45,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:09:45,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:09:45,317 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:09:45,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec1_product29.cil.c [2021-11-22 15:09:45,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/data/9024e2a15/296877afe7e947928c3ca19c75a59dfa/FLAG4a24f371e [2021-11-22 15:09:46,316 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:09:46,321 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/sv-benchmarks/c/product-lines/email_spec1_product29.cil.c [2021-11-22 15:09:46,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/data/9024e2a15/296877afe7e947928c3ca19c75a59dfa/FLAG4a24f371e [2021-11-22 15:09:46,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/data/9024e2a15/296877afe7e947928c3ca19c75a59dfa [2021-11-22 15:09:46,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:09:46,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:09:46,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:09:46,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:09:46,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:09:46,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:09:46" (1/1) ... [2021-11-22 15:09:46,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65544608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:46, skipping insertion in model container [2021-11-22 15:09:46,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:09:46" (1/1) ... [2021-11-22 15:09:46,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:09:46,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:09:47,130 WARN L230 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_98546b2e-82d3-47a2-800a-cbe0a9c27b84/sv-benchmarks/c/product-lines/email_spec1_product29.cil.c[32754,32767] [2021-11-22 15:09:47,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:09:47,407 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:09:47,490 WARN L230 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_98546b2e-82d3-47a2-800a-cbe0a9c27b84/sv-benchmarks/c/product-lines/email_spec1_product29.cil.c[32754,32767] [2021-11-22 15:09:47,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:09:47,582 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:09:47,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47 WrapperNode [2021-11-22 15:09:47,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:09:47,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:09:47,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:09:47,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:09:47,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:47,629 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:47,850 INFO L137 Inliner]: procedures = 131, calls = 227, calls flagged for inlining = 136, calls inlined = 302, statements flattened = 4949 [2021-11-22 15:09:47,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:09:47,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:09:47,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:09:47,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:09:47,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:47,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:47,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:47,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:47,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:48,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:48,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:48,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:09:48,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:09:48,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:09:48,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:09:48,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (1/1) ... [2021-11-22 15:09:48,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:09:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:48,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:09:48,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:09:48,195 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 15:09:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:09:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:09:48,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:09:48,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:09:48,551 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:09:48,554 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:09:51,125 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:09:51,163 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:09:51,163 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:09:51,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:09:51 BoogieIcfgContainer [2021-11-22 15:09:51,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:09:51,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:09:51,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:09:51,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:09:51,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:09:46" (1/3) ... [2021-11-22 15:09:51,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceb9759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:09:51, skipping insertion in model container [2021-11-22 15:09:51,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:09:47" (2/3) ... [2021-11-22 15:09:51,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ceb9759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:09:51, skipping insertion in model container [2021-11-22 15:09:51,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:09:51" (3/3) ... [2021-11-22 15:09:51,182 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product29.cil.c [2021-11-22 15:09:51,189 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:09:51,190 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 15:09:51,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:09:51,289 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 [2021-11-22 15:09:51,289 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 15:09:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 1080 states have (on average 1.7) internal successors, (1836), 1086 states have internal predecessors, (1836), 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) [2021-11-22 15:09:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 15:09:51,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:51,371 INFO L514 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] [2021-11-22 15:09:51,372 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2121387952, now seen corresponding path program 1 times [2021-11-22 15:09:51,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:51,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388172253] [2021-11-22 15:09:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:51,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:51,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:51,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388172253] [2021-11-22 15:09:51,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388172253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:51,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:51,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:51,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055767455] [2021-11-22 15:09:51,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:51,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:51,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:51,791 INFO L87 Difference]: Start difference. First operand has 1087 states, 1080 states have (on average 1.7) internal successors, (1836), 1086 states have internal predecessors, (1836), 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) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-22 15:09:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:52,174 INFO L93 Difference]: Finished difference Result 3208 states and 5432 transitions. [2021-11-22 15:09:52,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:52,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-22 15:09:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:52,212 INFO L225 Difference]: With dead ends: 3208 [2021-11-22 15:09:52,213 INFO L226 Difference]: Without dead ends: 1827 [2021-11-22 15:09:52,223 INFO L932 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 [2021-11-22 15:09:52,228 INFO L933 BasicCegarLoop]: 3603 mSDtfsCounter, 1797 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 5395 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:52,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1797 Valid, 5395 Invalid, 17 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2021-11-22 15:09:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 924. [2021-11-22 15:09:52,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 918 states have (on average 1.7047930283224402) internal successors, (1565), 923 states have internal predecessors, (1565), 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) [2021-11-22 15:09:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1565 transitions. [2021-11-22 15:09:52,362 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1565 transitions. Word has length 55 [2021-11-22 15:09:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:52,363 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1565 transitions. [2021-11-22 15:09:52,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-22 15:09:52,364 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1565 transitions. [2021-11-22 15:09:52,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 15:09:52,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:52,371 INFO L514 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] [2021-11-22 15:09:52,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:09:52,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1674143695, now seen corresponding path program 1 times [2021-11-22 15:09:52,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:52,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348721867] [2021-11-22 15:09:52,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:52,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:52,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:52,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348721867] [2021-11-22 15:09:52,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348721867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:52,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:52,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:09:52,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790222549] [2021-11-22 15:09:52,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:52,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:09:52,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:52,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:09:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:09:52,550 INFO L87 Difference]: Start difference. First operand 924 states and 1565 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2021-11-22 15:09:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:52,878 INFO L93 Difference]: Finished difference Result 2713 states and 4603 transitions. [2021-11-22 15:09:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:09:52,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 [2021-11-22 15:09:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:52,899 INFO L225 Difference]: With dead ends: 2713 [2021-11-22 15:09:52,899 INFO L226 Difference]: Without dead ends: 1812 [2021-11-22 15:09:52,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:09:52,910 INFO L933 BasicCegarLoop]: 3038 mSDtfsCounter, 3084 mSDsluCounter, 4549 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3084 SdHoareTripleChecker+Valid, 7587 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:52,911 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3084 Valid, 7587 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:09:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2021-11-22 15:09:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 924. [2021-11-22 15:09:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 918 states have (on average 1.7037037037037037) internal successors, (1564), 923 states have internal predecessors, (1564), 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) [2021-11-22 15:09:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1564 transitions. [2021-11-22 15:09:53,037 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1564 transitions. Word has length 57 [2021-11-22 15:09:53,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:53,039 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1564 transitions. [2021-11-22 15:09:53,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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) [2021-11-22 15:09:53,040 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1564 transitions. [2021-11-22 15:09:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:09:53,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:53,047 INFO L514 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, 1] [2021-11-22 15:09:53,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:09:53,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:53,055 INFO L85 PathProgramCache]: Analyzing trace with hash -851646166, now seen corresponding path program 1 times [2021-11-22 15:09:53,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:53,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649587896] [2021-11-22 15:09:53,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:53,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:53,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:53,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649587896] [2021-11-22 15:09:53,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649587896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:53,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:53,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:53,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118426646] [2021-11-22 15:09:53,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:53,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:53,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:53,236 INFO L87 Difference]: Start difference. First operand 924 states and 1564 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-22 15:09:53,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:53,337 INFO L93 Difference]: Finished difference Result 1827 states and 3099 transitions. [2021-11-22 15:09:53,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:53,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 [2021-11-22 15:09:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:53,346 INFO L225 Difference]: With dead ends: 1827 [2021-11-22 15:09:53,347 INFO L226 Difference]: Without dead ends: 931 [2021-11-22 15:09:53,349 INFO L932 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 [2021-11-22 15:09:53,359 INFO L933 BasicCegarLoop]: 1568 mSDtfsCounter, 1537 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:53,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1590 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:53,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-11-22 15:09:53,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 924. [2021-11-22 15:09:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 918 states have (on average 1.7004357298474946) internal successors, (1561), 923 states have internal predecessors, (1561), 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) [2021-11-22 15:09:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1561 transitions. [2021-11-22 15:09:53,434 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1561 transitions. Word has length 58 [2021-11-22 15:09:53,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1561 transitions. [2021-11-22 15:09:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-22 15:09:53,435 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1561 transitions. [2021-11-22 15:09:53,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:09:53,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:53,438 INFO L514 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, 1, 1, 1] [2021-11-22 15:09:53,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:09:53,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2114999845, now seen corresponding path program 1 times [2021-11-22 15:09:53,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:53,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669099841] [2021-11-22 15:09:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:53,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:53,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:53,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669099841] [2021-11-22 15:09:53,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669099841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:53,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:53,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:09:53,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866453289] [2021-11-22 15:09:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:53,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:09:53,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:53,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:09:53,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:09:53,581 INFO L87 Difference]: Start difference. First operand 924 states and 1561 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-22 15:09:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:53,898 INFO L93 Difference]: Finished difference Result 2700 states and 4580 transitions. [2021-11-22 15:09:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:09:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-11-22 15:09:53,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:53,914 INFO L225 Difference]: With dead ends: 2700 [2021-11-22 15:09:53,915 INFO L226 Difference]: Without dead ends: 1809 [2021-11-22 15:09:53,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:09:53,927 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 7556 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7556 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:53,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7556 Valid, 3103 Invalid, 76 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:09:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-11-22 15:09:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 924. [2021-11-22 15:09:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 918 states have (on average 1.6993464052287581) internal successors, (1560), 923 states have internal predecessors, (1560), 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) [2021-11-22 15:09:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1560 transitions. [2021-11-22 15:09:54,001 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1560 transitions. Word has length 60 [2021-11-22 15:09:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:54,003 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1560 transitions. [2021-11-22 15:09:54,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-22 15:09:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1560 transitions. [2021-11-22 15:09:54,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:09:54,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:54,008 INFO L514 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, 1, 1, 1, 1] [2021-11-22 15:09:54,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:09:54,010 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1758954028, now seen corresponding path program 1 times [2021-11-22 15:09:54,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:54,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793819857] [2021-11-22 15:09:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:54,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:54,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:54,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793819857] [2021-11-22 15:09:54,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793819857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:54,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:54,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:09:54,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237258124] [2021-11-22 15:09:54,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:54,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:09:54,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:09:54,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:09:54,132 INFO L87 Difference]: Start difference. First operand 924 states and 1560 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2021-11-22 15:09:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:54,446 INFO L93 Difference]: Finished difference Result 2707 states and 4586 transitions. [2021-11-22 15:09:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:09:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 61 [2021-11-22 15:09:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:54,462 INFO L225 Difference]: With dead ends: 2707 [2021-11-22 15:09:54,462 INFO L226 Difference]: Without dead ends: 1816 [2021-11-22 15:09:54,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:09:54,468 INFO L933 BasicCegarLoop]: 1544 mSDtfsCounter, 7560 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7560 SdHoareTripleChecker+Valid, 3106 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:54,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7560 Valid, 3106 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:09:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2021-11-22 15:09:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 924. [2021-11-22 15:09:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 918 states have (on average 1.698257080610022) internal successors, (1559), 923 states have internal predecessors, (1559), 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) [2021-11-22 15:09:54,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1559 transitions. [2021-11-22 15:09:54,568 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1559 transitions. Word has length 61 [2021-11-22 15:09:54,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:54,569 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1559 transitions. [2021-11-22 15:09:54,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2021-11-22 15:09:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1559 transitions. [2021-11-22 15:09:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:09:54,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:54,578 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-22 15:09:54,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:09:54,579 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:54,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1554969910, now seen corresponding path program 1 times [2021-11-22 15:09:54,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:54,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021304910] [2021-11-22 15:09:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:54,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:54,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:54,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021304910] [2021-11-22 15:09:54,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021304910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:54,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:54,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:54,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602178141] [2021-11-22 15:09:54,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:54,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:54,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:54,687 INFO L87 Difference]: Start difference. First operand 924 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-22 15:09:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:54,798 INFO L93 Difference]: Finished difference Result 1554 states and 2602 transitions. [2021-11-22 15:09:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:54,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-22 15:09:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:54,806 INFO L225 Difference]: With dead ends: 1554 [2021-11-22 15:09:54,807 INFO L226 Difference]: Without dead ends: 927 [2021-11-22 15:09:54,808 INFO L932 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 [2021-11-22 15:09:54,810 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:54,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3112 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-22 15:09:54,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 926. [2021-11-22 15:09:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 920 states have (on average 1.6967391304347825) internal successors, (1561), 925 states have internal predecessors, (1561), 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) [2021-11-22 15:09:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1561 transitions. [2021-11-22 15:09:54,889 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1561 transitions. Word has length 62 [2021-11-22 15:09:54,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:54,893 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1561 transitions. [2021-11-22 15:09:54,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-22 15:09:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1561 transitions. [2021-11-22 15:09:54,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 15:09:54,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:54,896 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:54,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:09:54,897 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:54,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash 857583464, now seen corresponding path program 1 times [2021-11-22 15:09:54,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:54,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106312930] [2021-11-22 15:09:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:54,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:54,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:54,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:55,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106312930] [2021-11-22 15:09:55,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106312930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:55,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:55,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:55,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246621785] [2021-11-22 15:09:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:55,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:55,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:55,004 INFO L87 Difference]: Start difference. First operand 926 states and 1561 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-22 15:09:55,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:55,151 INFO L93 Difference]: Finished difference Result 2650 states and 4493 transitions. [2021-11-22 15:09:55,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:55,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2021-11-22 15:09:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:55,169 INFO L225 Difference]: With dead ends: 2650 [2021-11-22 15:09:55,170 INFO L226 Difference]: Without dead ends: 1762 [2021-11-22 15:09:55,172 INFO L932 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 [2021-11-22 15:09:55,174 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 1509 mSDsluCounter, 1460 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 3018 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:55,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1509 Valid, 3018 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2021-11-22 15:09:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1135. [2021-11-22 15:09:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1129 states have (on average 1.7174490699734277) internal successors, (1939), 1134 states have internal predecessors, (1939), 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) [2021-11-22 15:09:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1939 transitions. [2021-11-22 15:09:55,303 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1939 transitions. Word has length 68 [2021-11-22 15:09:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:55,304 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1939 transitions. [2021-11-22 15:09:55,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2021-11-22 15:09:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1939 transitions. [2021-11-22 15:09:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:09:55,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:55,307 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:55,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:09:55,307 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1708940618, now seen corresponding path program 1 times [2021-11-22 15:09:55,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:55,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79381334] [2021-11-22 15:09:55,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:55,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:55,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79381334] [2021-11-22 15:09:55,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79381334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:09:55,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97746620] [2021-11-22 15:09:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:55,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:55,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:55,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:55,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:09:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:55,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:09:55,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:09:55,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:09:55,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97746620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:55,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:09:55,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-22 15:09:55,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409262104] [2021-11-22 15:09:55,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:55,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:55,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:55,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:09:55,947 INFO L87 Difference]: Start difference. First operand 1135 states and 1939 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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) [2021-11-22 15:09:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:56,078 INFO L93 Difference]: Finished difference Result 1641 states and 2773 transitions. [2021-11-22 15:09:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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 69 [2021-11-22 15:09:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:56,088 INFO L225 Difference]: With dead ends: 1641 [2021-11-22 15:09:56,089 INFO L226 Difference]: Without dead ends: 1123 [2021-11-22 15:09:56,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:09:56,092 INFO L933 BasicCegarLoop]: 1539 mSDtfsCounter, 650 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 2351 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:56,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 2351 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-11-22 15:09:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2021-11-22 15:09:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1119 states have (on average 1.7167113494191242) internal successors, (1921), 1122 states have internal predecessors, (1921), 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) [2021-11-22 15:09:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1921 transitions. [2021-11-22 15:09:56,192 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1921 transitions. Word has length 69 [2021-11-22 15:09:56,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:56,192 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1921 transitions. [2021-11-22 15:09:56,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 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) [2021-11-22 15:09:56,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1921 transitions. [2021-11-22 15:09:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-22 15:09:56,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:56,197 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:56,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:56,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:56,424 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:56,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:56,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1402598705, now seen corresponding path program 1 times [2021-11-22 15:09:56,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:56,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341377567] [2021-11-22 15:09:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:56,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:56,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:56,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341377567] [2021-11-22 15:09:56,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341377567] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:09:56,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516354468] [2021-11-22 15:09:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:56,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:56,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:09:56,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:09:56,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:09:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:56,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:09:56,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:09:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:57,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:09:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516354468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:09:57,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:09:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:09:57,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102909223] [2021-11-22 15:09:57,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:09:57,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:09:57,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:57,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:09:57,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:09:57,455 INFO L87 Difference]: Start difference. First operand 1123 states and 1921 transitions. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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) [2021-11-22 15:09:57,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:57,910 INFO L93 Difference]: Finished difference Result 4786 states and 8188 transitions. [2021-11-22 15:09:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:09:57,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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 116 [2021-11-22 15:09:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:57,946 INFO L225 Difference]: With dead ends: 4786 [2021-11-22 15:09:57,946 INFO L226 Difference]: Without dead ends: 4171 [2021-11-22 15:09:57,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:09:57,951 INFO L933 BasicCegarLoop]: 1539 mSDtfsCounter, 5963 mSDsluCounter, 7551 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5963 SdHoareTripleChecker+Valid, 9090 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:57,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5963 Valid, 9090 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2021-11-22 15:09:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 2326. [2021-11-22 15:09:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2322 states have (on average 1.7648578811369509) internal successors, (4098), 2325 states have internal predecessors, (4098), 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) [2021-11-22 15:09:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 4098 transitions. [2021-11-22 15:09:58,168 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 4098 transitions. Word has length 116 [2021-11-22 15:09:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:58,170 INFO L470 AbstractCegarLoop]: Abstraction has 2326 states and 4098 transitions. [2021-11-22 15:09:58,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 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) [2021-11-22 15:09:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 4098 transitions. [2021-11-22 15:09:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-22 15:09:58,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:58,177 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:58,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:09:58,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98546b2e-82d3-47a2-800a-cbe0a9c27b84/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:09:58,392 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:58,392 INFO L85 PathProgramCache]: Analyzing trace with hash 897257378, now seen corresponding path program 1 times [2021-11-22 15:09:58,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:58,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71995097] [2021-11-22 15:09:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:58,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:58,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71995097] [2021-11-22 15:09:58,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71995097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:58,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:58,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:58,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758842873] [2021-11-22 15:09:58,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:58,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:58,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:58,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:58,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:58,468 INFO L87 Difference]: Start difference. First operand 2326 states and 4098 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-22 15:09:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:58,858 INFO L93 Difference]: Finished difference Result 6367 states and 11230 transitions. [2021-11-22 15:09:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2021-11-22 15:09:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:58,894 INFO L225 Difference]: With dead ends: 6367 [2021-11-22 15:09:58,894 INFO L226 Difference]: Without dead ends: 4141 [2021-11-22 15:09:58,899 INFO L932 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 [2021-11-22 15:09:58,900 INFO L933 BasicCegarLoop]: 1541 mSDtfsCounter, 1489 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:58,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 3077 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:58,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2021-11-22 15:09:59,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 3526. [2021-11-22 15:09:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3522 states have (on average 1.7779670641680863) internal successors, (6262), 3525 states have internal predecessors, (6262), 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) [2021-11-22 15:09:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 6262 transitions. [2021-11-22 15:09:59,195 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 6262 transitions. Word has length 122 [2021-11-22 15:09:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:09:59,196 INFO L470 AbstractCegarLoop]: Abstraction has 3526 states and 6262 transitions. [2021-11-22 15:09:59,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-11-22 15:09:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 6262 transitions. [2021-11-22 15:09:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-22 15:09:59,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:09:59,208 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:09:59,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:09:59,208 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:09:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:09:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash 678073698, now seen corresponding path program 1 times [2021-11-22 15:09:59,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:09:59,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877247631] [2021-11-22 15:09:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:09:59,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:09:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:09:59,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:09:59,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:09:59,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877247631] [2021-11-22 15:09:59,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877247631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:09:59,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:09:59,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:09:59,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390980951] [2021-11-22 15:09:59,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:09:59,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:09:59,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:09:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:09:59,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:09:59,279 INFO L87 Difference]: Start difference. First operand 3526 states and 6262 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-22 15:09:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:09:59,668 INFO L93 Difference]: Finished difference Result 9366 states and 16652 transitions. [2021-11-22 15:09:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:09:59,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2021-11-22 15:09:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:09:59,727 INFO L225 Difference]: With dead ends: 9366 [2021-11-22 15:09:59,727 INFO L226 Difference]: Without dead ends: 6030 [2021-11-22 15:09:59,735 INFO L932 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 [2021-11-22 15:09:59,736 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1487 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3068 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:09:59,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1487 Valid, 3068 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:09:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2021-11-22 15:10:00,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5415. [2021-11-22 15:10:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5411 states have (on average 1.7871003511365737) internal successors, (9670), 5414 states have internal predecessors, (9670), 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) [2021-11-22 15:10:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 9670 transitions. [2021-11-22 15:10:00,208 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 9670 transitions. Word has length 123 [2021-11-22 15:10:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:00,208 INFO L470 AbstractCegarLoop]: Abstraction has 5415 states and 9670 transitions. [2021-11-22 15:10:00,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2021-11-22 15:10:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 9670 transitions. [2021-11-22 15:10:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-22 15:10:00,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:00,228 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:00,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:10:00,228 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -951592064, now seen corresponding path program 1 times [2021-11-22 15:10:00,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:00,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260869430] [2021-11-22 15:10:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:00,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:00,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:00,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260869430] [2021-11-22 15:10:00,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260869430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:00,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:00,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:00,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641687635] [2021-11-22 15:10:00,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:00,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:00,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:00,316 INFO L87 Difference]: Start difference. First operand 5415 states and 9670 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-22 15:10:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:00,848 INFO L93 Difference]: Finished difference Result 13594 states and 24277 transitions. [2021-11-22 15:10:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:00,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2021-11-22 15:10:00,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:00,878 INFO L225 Difference]: With dead ends: 13594 [2021-11-22 15:10:00,879 INFO L226 Difference]: Without dead ends: 8726 [2021-11-22 15:10:00,888 INFO L932 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 [2021-11-22 15:10:00,890 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1485 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:00,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 3020 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:00,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8726 states. [2021-11-22 15:10:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8726 to 8111. [2021-11-22 15:10:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8111 states, 8107 states have (on average 1.7905513753546318) internal successors, (14516), 8110 states have internal predecessors, (14516), 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) [2021-11-22 15:10:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8111 states to 8111 states and 14516 transitions. [2021-11-22 15:10:01,625 INFO L78 Accepts]: Start accepts. Automaton has 8111 states and 14516 transitions. Word has length 124 [2021-11-22 15:10:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:01,626 INFO L470 AbstractCegarLoop]: Abstraction has 8111 states and 14516 transitions. [2021-11-22 15:10:01,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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) [2021-11-22 15:10:01,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8111 states and 14516 transitions. [2021-11-22 15:10:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-22 15:10:01,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:01,658 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:01,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:10:01,659 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:01,659 INFO L85 PathProgramCache]: Analyzing trace with hash -785414672, now seen corresponding path program 1 times [2021-11-22 15:10:01,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239894879] [2021-11-22 15:10:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:01,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:01,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:01,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239894879] [2021-11-22 15:10:01,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239894879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:01,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:01,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:01,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123421164] [2021-11-22 15:10:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:01,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:01,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:01,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:01,752 INFO L87 Difference]: Start difference. First operand 8111 states and 14516 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-22 15:10:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:02,490 INFO L93 Difference]: Finished difference Result 19957 states and 35729 transitions. [2021-11-22 15:10:02,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:02,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 125 [2021-11-22 15:10:02,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:02,541 INFO L225 Difference]: With dead ends: 19957 [2021-11-22 15:10:02,541 INFO L226 Difference]: Without dead ends: 12967 [2021-11-22 15:10:02,556 INFO L932 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 [2021-11-22 15:10:02,558 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1483 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:02,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 3020 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:02,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12967 states. [2021-11-22 15:10:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12967 to 12352. [2021-11-22 15:10:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12352 states, 12348 states have (on average 1.7919501133786848) internal successors, (22127), 12351 states have internal predecessors, (22127), 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) [2021-11-22 15:10:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12352 states to 12352 states and 22127 transitions. [2021-11-22 15:10:03,643 INFO L78 Accepts]: Start accepts. Automaton has 12352 states and 22127 transitions. Word has length 125 [2021-11-22 15:10:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:03,644 INFO L470 AbstractCegarLoop]: Abstraction has 12352 states and 22127 transitions. [2021-11-22 15:10:03,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2021-11-22 15:10:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12352 states and 22127 transitions. [2021-11-22 15:10:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-22 15:10:03,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:03,684 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:03,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:10:03,685 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1442901904, now seen corresponding path program 1 times [2021-11-22 15:10:03,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:03,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603265073] [2021-11-22 15:10:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:03,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:03,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:03,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603265073] [2021-11-22 15:10:03,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603265073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:03,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:03,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:03,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775635718] [2021-11-22 15:10:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:03,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:03,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:03,779 INFO L87 Difference]: Start difference. First operand 12352 states and 22127 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-22 15:10:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:05,200 INFO L93 Difference]: Finished difference Result 31831 states and 57083 transitions. [2021-11-22 15:10:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2021-11-22 15:10:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:05,285 INFO L225 Difference]: With dead ends: 31831 [2021-11-22 15:10:05,285 INFO L226 Difference]: Without dead ends: 21048 [2021-11-22 15:10:05,307 INFO L932 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 [2021-11-22 15:10:05,308 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1481 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:05,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 3076 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21048 states. [2021-11-22 15:10:06,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21048 to 20433. [2021-11-22 15:10:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20433 states, 20429 states have (on average 1.792843506779578) internal successors, (36626), 20432 states have internal predecessors, (36626), 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) [2021-11-22 15:10:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 36626 transitions. [2021-11-22 15:10:06,890 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 36626 transitions. Word has length 126 [2021-11-22 15:10:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:06,891 INFO L470 AbstractCegarLoop]: Abstraction has 20433 states and 36626 transitions. [2021-11-22 15:10:06,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-11-22 15:10:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 36626 transitions. [2021-11-22 15:10:06,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-22 15:10:06,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:06,959 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:06,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:10:06,960 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1125011712, now seen corresponding path program 1 times [2021-11-22 15:10:06,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:06,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380633864] [2021-11-22 15:10:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:06,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:07,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:07,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380633864] [2021-11-22 15:10:07,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380633864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:07,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:07,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:07,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141087685] [2021-11-22 15:10:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:07,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:07,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:07,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:07,055 INFO L87 Difference]: Start difference. First operand 20433 states and 36626 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-22 15:10:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:09,216 INFO L93 Difference]: Finished difference Result 53287 states and 95804 transitions. [2021-11-22 15:10:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2021-11-22 15:10:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:09,373 INFO L225 Difference]: With dead ends: 53287 [2021-11-22 15:10:09,373 INFO L226 Difference]: Without dead ends: 35288 [2021-11-22 15:10:09,408 INFO L932 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 [2021-11-22 15:10:09,409 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1479 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:09,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 3067 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:09,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35288 states. [2021-11-22 15:10:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35288 to 34673. [2021-11-22 15:10:11,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34673 states, 34669 states have (on average 1.7965329256684646) internal successors, (62284), 34672 states have internal predecessors, (62284), 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) [2021-11-22 15:10:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34673 states to 34673 states and 62284 transitions. [2021-11-22 15:10:11,442 INFO L78 Accepts]: Start accepts. Automaton has 34673 states and 62284 transitions. Word has length 127 [2021-11-22 15:10:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:11,442 INFO L470 AbstractCegarLoop]: Abstraction has 34673 states and 62284 transitions. [2021-11-22 15:10:11,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2021-11-22 15:10:11,443 INFO L276 IsEmpty]: Start isEmpty. Operand 34673 states and 62284 transitions. [2021-11-22 15:10:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-22 15:10:11,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:11,505 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:11,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:10:11,506 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:11,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1389111986, now seen corresponding path program 1 times [2021-11-22 15:10:11,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:11,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577615185] [2021-11-22 15:10:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:11,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:11,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:11,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:11,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577615185] [2021-11-22 15:10:11,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577615185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:11,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:11,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:11,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562128345] [2021-11-22 15:10:11,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:11,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:11,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:11,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:11,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:11,572 INFO L87 Difference]: Start difference. First operand 34673 states and 62284 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-11-22 15:10:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:14,075 INFO L93 Difference]: Finished difference Result 86484 states and 154968 transitions. [2021-11-22 15:10:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2021-11-22 15:10:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:14,373 INFO L225 Difference]: With dead ends: 86484 [2021-11-22 15:10:14,373 INFO L226 Difference]: Without dead ends: 56423 [2021-11-22 15:10:14,449 INFO L932 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 [2021-11-22 15:10:14,451 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1477 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:14,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 2993 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:14,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56423 states. [2021-11-22 15:10:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56423 to 55808. [2021-11-22 15:10:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55808 states, 55804 states have (on average 1.7863952404845531) internal successors, (99688), 55807 states have internal predecessors, (99688), 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) [2021-11-22 15:10:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55808 states to 55808 states and 99688 transitions. [2021-11-22 15:10:17,729 INFO L78 Accepts]: Start accepts. Automaton has 55808 states and 99688 transitions. Word has length 128 [2021-11-22 15:10:17,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 55808 states and 99688 transitions. [2021-11-22 15:10:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-11-22 15:10:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 55808 states and 99688 transitions. [2021-11-22 15:10:17,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:10:17,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:17,824 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:17,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:10:17,824 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:17,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:17,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1979682100, now seen corresponding path program 1 times [2021-11-22 15:10:17,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949033504] [2021-11-22 15:10:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:17,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:17,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:17,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:17,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949033504] [2021-11-22 15:10:17,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949033504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:17,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:17,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:17,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742804719] [2021-11-22 15:10:17,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:17,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:17,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:17,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:17,887 INFO L87 Difference]: Start difference. First operand 55808 states and 99688 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-11-22 15:10:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:21,410 INFO L93 Difference]: Finished difference Result 143635 states and 256563 transitions. [2021-11-22 15:10:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:21,410 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), 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 129 [2021-11-22 15:10:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:21,682 INFO L225 Difference]: With dead ends: 143635 [2021-11-22 15:10:21,682 INFO L226 Difference]: Without dead ends: 94707 [2021-11-22 15:10:21,748 INFO L932 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 [2021-11-22 15:10:21,749 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1475 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:21,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 3020 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94707 states. [2021-11-22 15:10:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94707 to 94092. [2021-11-22 15:10:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94092 states, 94088 states have (on average 1.78276719666695) internal successors, (167737), 94091 states have internal predecessors, (167737), 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) [2021-11-22 15:10:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94092 states to 94092 states and 167737 transitions. [2021-11-22 15:10:26,957 INFO L78 Accepts]: Start accepts. Automaton has 94092 states and 167737 transitions. Word has length 129 [2021-11-22 15:10:26,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:26,958 INFO L470 AbstractCegarLoop]: Abstraction has 94092 states and 167737 transitions. [2021-11-22 15:10:26,958 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), 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) [2021-11-22 15:10:26,958 INFO L276 IsEmpty]: Start isEmpty. Operand 94092 states and 167737 transitions. [2021-11-22 15:10:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-22 15:10:27,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:27,077 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:27,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:10:27,077 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:27,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1846711366, now seen corresponding path program 1 times [2021-11-22 15:10:27,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:27,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748754782] [2021-11-22 15:10:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:27,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:27,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:27,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748754782] [2021-11-22 15:10:27,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748754782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:27,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:27,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:27,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307257267] [2021-11-22 15:10:27,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:27,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:27,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:27,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:27,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:27,143 INFO L87 Difference]: Start difference. First operand 94092 states and 167737 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-22 15:10:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:34,099 INFO L93 Difference]: Finished difference Result 259457 states and 463690 transitions. [2021-11-22 15:10:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:10:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 130 [2021-11-22 15:10:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:34,551 INFO L225 Difference]: With dead ends: 259457 [2021-11-22 15:10:34,552 INFO L226 Difference]: Without dead ends: 174185 [2021-11-22 15:10:34,642 INFO L932 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 [2021-11-22 15:10:34,642 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1473 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:34,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 3067 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174185 states. [2021-11-22 15:10:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174185 to 173570. [2021-11-22 15:10:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173570 states, 173566 states have (on average 1.7852978117834137) internal successors, (309867), 173569 states have internal predecessors, (309867), 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) [2021-11-22 15:10:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173570 states to 173570 states and 309867 transitions. [2021-11-22 15:10:44,025 INFO L78 Accepts]: Start accepts. Automaton has 173570 states and 309867 transitions. Word has length 130 [2021-11-22 15:10:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:44,026 INFO L470 AbstractCegarLoop]: Abstraction has 173570 states and 309867 transitions. [2021-11-22 15:10:44,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2021-11-22 15:10:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 173570 states and 309867 transitions. [2021-11-22 15:10:44,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 15:10:44,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:44,170 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:44,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:10:44,170 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 15:10:44,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:44,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2009736476, now seen corresponding path program 1 times [2021-11-22 15:10:44,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:44,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801746161] [2021-11-22 15:10:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:44,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:44,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801746161] [2021-11-22 15:10:44,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801746161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:44,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:44,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:10:44,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673361853] [2021-11-22 15:10:44,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:44,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:10:44,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:10:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:10:44,828 INFO L87 Difference]: Start difference. First operand 173570 states and 309867 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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)