./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G --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 bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:12:36,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:12:36,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:12:36,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:12:36,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:12:36,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:12:36,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:12:36,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:12:36,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:12:36,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:12:36,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:12:36,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:12:36,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:12:36,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:12:36,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:12:36,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:12:36,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:12:36,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:12:36,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:12:36,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:12:36,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:12:36,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:12:36,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:12:36,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:12:36,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:12:36,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:12:36,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:12:36,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:12:36,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:12:36,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:12:36,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:12:36,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:12:36,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:12:36,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:12:36,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:12:36,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:12:36,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:12:36,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:12:36,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:12:36,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:12:36,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:12:36,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:12:36,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:12:36,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:12:36,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:12:36,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:12:36,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:12:36,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:12:36,681 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:12:36,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:12:36,682 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:12:36,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:12:36,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:12:36,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:12:36,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:12:36,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:12:36,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:12:36,683 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:12:36,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:12:36,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:12:36,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:12:36,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:12:36,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:12:36,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:12:36,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:12:36,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:12:36,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:12:36,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:12:36,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:12:36,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:12:36,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:12:36,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:12:36,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:12:36,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:12:36,694 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_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3dce9b114483214f320874a7aac06c61be45c777f03f63c22a8ddab1e62ece [2021-11-23 13:12:37,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:12:37,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:12:37,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:12:37,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:12:37,037 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:12:37,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2021-11-23 13:12:37,107 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/data/aa1dc5f10/ffc8e7371fff433889080a367cf1f5d1/FLAG2a366abca [2021-11-23 13:12:37,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:12:37,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c [2021-11-23 13:12:37,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/data/aa1dc5f10/ffc8e7371fff433889080a367cf1f5d1/FLAG2a366abca [2021-11-23 13:12:38,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/data/aa1dc5f10/ffc8e7371fff433889080a367cf1f5d1 [2021-11-23 13:12:38,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:12:38,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:12:38,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:12:38,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:12:38,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:12:38,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:38,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9be063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38, skipping insertion in model container [2021-11-23 13:12:38,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:38,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:12:38,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:12:38,622 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_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2021-11-23 13:12:38,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:12:38,689 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:12:38,819 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_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/sv-benchmarks/c/product-lines/elevator_spec13_product21.cil.c[58922,58935] [2021-11-23 13:12:38,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:12:38,888 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:12:38,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38 WrapperNode [2021-11-23 13:12:38,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:12:38,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:12:38,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:12:38,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:12:38,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:38,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:39,482 INFO L137 Inliner]: procedures = 90, calls = 338, calls flagged for inlining = 191, calls inlined = 915, statements flattened = 34223 [2021-11-23 13:12:39,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:12:39,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:12:39,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:12:39,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:12:39,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:39,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:39,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:39,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:39,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:40,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:40,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:40,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:12:40,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:12:40,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:12:40,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:12:40,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (1/1) ... [2021-11-23 13:12:40,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:12:40,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:12:40,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:12:40,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90fd44f-94fa-4cf6-966c-e559bfa7d0d5/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:12:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:12:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:12:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:12:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:12:40,691 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:12:40,693 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:12:52,286 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:12:52,357 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:12:52,358 INFO L301 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-23 13:12:52,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:12:52 BoogieIcfgContainer [2021-11-23 13:12:52,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:12:52,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:12:52,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:12:52,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:12:52,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:12:38" (1/3) ... [2021-11-23 13:12:52,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32876873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:12:52, skipping insertion in model container [2021-11-23 13:12:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:12:38" (2/3) ... [2021-11-23 13:12:52,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32876873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:12:52, skipping insertion in model container [2021-11-23 13:12:52,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:12:52" (3/3) ... [2021-11-23 13:12:52,383 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product21.cil.c [2021-11-23 13:12:52,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:12:52,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-23 13:12:52,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:12:52,504 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 [2021-11-23 13:12:52,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-23 13:12:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand has 9192 states, 9181 states have (on average 1.8837817231238427) internal successors, (17295), 9191 states have internal predecessors, (17295), 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) [2021-11-23 13:12:52,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 13:12:52,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:52,755 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] [2021-11-23 13:12:52,756 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:12:52,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1910256703, now seen corresponding path program 1 times [2021-11-23 13:12:52,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:52,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32953594] [2021-11-23 13:12:52,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:52,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:53,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:53,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32953594] [2021-11-23 13:12:53,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32953594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:53,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:53,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:12:53,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033064733] [2021-11-23 13:12:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:53,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:12:53,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:53,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:12:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:12:53,284 INFO L87 Difference]: Start difference. First operand has 9192 states, 9181 states have (on average 1.8837817231238427) internal successors, (17295), 9191 states have internal predecessors, (17295), 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 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:54,516 INFO L93 Difference]: Finished difference Result 22048 states and 41496 transitions. [2021-11-23 13:12:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:12:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-23 13:12:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:54,631 INFO L225 Difference]: With dead ends: 22048 [2021-11-23 13:12:54,631 INFO L226 Difference]: Without dead ends: 12855 [2021-11-23 13:12:54,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:12:54,657 INFO L933 BasicCegarLoop]: 23998 mSDtfsCounter, 51430 mSDsluCounter, 6892 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51430 SdHoareTripleChecker+Valid, 30890 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:54,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51430 Valid, 30890 Invalid, 43 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:12:54,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12855 states. [2021-11-23 13:12:55,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12855 to 9175. [2021-11-23 13:12:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9175 states, 9165 states have (on average 1.8702673213311511) internal successors, (17141), 9174 states have internal predecessors, (17141), 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) [2021-11-23 13:12:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9175 states to 9175 states and 17141 transitions. [2021-11-23 13:12:55,285 INFO L78 Accepts]: Start accepts. Automaton has 9175 states and 17141 transitions. Word has length 63 [2021-11-23 13:12:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:55,286 INFO L470 AbstractCegarLoop]: Abstraction has 9175 states and 17141 transitions. [2021-11-23 13:12:55,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:12:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 9175 states and 17141 transitions. [2021-11-23 13:12:55,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 13:12:55,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:55,293 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] [2021-11-23 13:12:55,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:12:55,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:12:55,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:55,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1865257773, now seen corresponding path program 1 times [2021-11-23 13:12:55,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:55,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220137140] [2021-11-23 13:12:55,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:55,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:55,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:55,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220137140] [2021-11-23 13:12:55,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220137140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:55,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:55,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:12:55,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917735912] [2021-11-23 13:12:55,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:55,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:12:55,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:55,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:12:55,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:12:55,419 INFO L87 Difference]: Start difference. First operand 9175 states and 17141 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-11-23 13:12:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:57,089 INFO L93 Difference]: Finished difference Result 36459 states and 68107 transitions. [2021-11-23 13:12:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:12:57,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2021-11-23 13:12:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:57,242 INFO L225 Difference]: With dead ends: 36459 [2021-11-23 13:12:57,243 INFO L226 Difference]: Without dead ends: 27308 [2021-11-23 13:12:57,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:12:57,265 INFO L933 BasicCegarLoop]: 40852 mSDtfsCounter, 44002 mSDsluCounter, 51077 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44002 SdHoareTripleChecker+Valid, 91929 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:57,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44002 Valid, 91929 Invalid, 114 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [18 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:12:57,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27308 states. [2021-11-23 13:12:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27308 to 9190. [2021-11-23 13:12:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9190 states, 9180 states have (on average 1.8688453159041394) internal successors, (17156), 9189 states have internal predecessors, (17156), 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) [2021-11-23 13:12:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9190 states to 9190 states and 17156 transitions. [2021-11-23 13:12:57,854 INFO L78 Accepts]: Start accepts. Automaton has 9190 states and 17156 transitions. Word has length 65 [2021-11-23 13:12:57,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:57,856 INFO L470 AbstractCegarLoop]: Abstraction has 9190 states and 17156 transitions. [2021-11-23 13:12:57,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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) [2021-11-23 13:12:57,856 INFO L276 IsEmpty]: Start isEmpty. Operand 9190 states and 17156 transitions. [2021-11-23 13:12:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 13:12:57,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:57,862 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] [2021-11-23 13:12:57,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:12:57,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:12:57,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:57,868 INFO L85 PathProgramCache]: Analyzing trace with hash 626862305, now seen corresponding path program 1 times [2021-11-23 13:12:57,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:57,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052269369] [2021-11-23 13:12:57,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:57,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:57,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:57,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052269369] [2021-11-23 13:12:57,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052269369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:57,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:57,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:12:57,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870779910] [2021-11-23 13:12:57,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:57,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:12:57,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:57,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:12:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:12:57,952 INFO L87 Difference]: Start difference. First operand 9190 states and 17156 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 13:12:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:12:58,805 INFO L93 Difference]: Finished difference Result 27377 states and 51127 transitions. [2021-11-23 13:12:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:12:58,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2021-11-23 13:12:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:12:58,858 INFO L225 Difference]: With dead ends: 27377 [2021-11-23 13:12:58,859 INFO L226 Difference]: Without dead ends: 18201 [2021-11-23 13:12:58,874 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 [2021-11-23 13:12:58,881 INFO L933 BasicCegarLoop]: 33966 mSDtfsCounter, 16937 mSDsluCounter, 17020 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16937 SdHoareTripleChecker+Valid, 50986 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:12:58,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16937 Valid, 50986 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:12:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18201 states. [2021-11-23 13:12:59,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18201 to 9156. [2021-11-23 13:12:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9156 states, 9146 states have (on average 1.8683577520227421) internal successors, (17088), 9155 states have internal predecessors, (17088), 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) [2021-11-23 13:12:59,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 17088 transitions. [2021-11-23 13:12:59,385 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 17088 transitions. Word has length 67 [2021-11-23 13:12:59,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:12:59,385 INFO L470 AbstractCegarLoop]: Abstraction has 9156 states and 17088 transitions. [2021-11-23 13:12:59,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-23 13:12:59,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 17088 transitions. [2021-11-23 13:12:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 13:12:59,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:12:59,442 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] [2021-11-23 13:12:59,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:12:59,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:12:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:12:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1252853740, now seen corresponding path program 1 times [2021-11-23 13:12:59,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:12:59,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012459876] [2021-11-23 13:12:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:12:59,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:12:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:12:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:12:59,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:12:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012459876] [2021-11-23 13:12:59,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012459876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:12:59,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:12:59,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:12:59,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216013727] [2021-11-23 13:12:59,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:12:59,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:12:59,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:12:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:12:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:12:59,505 INFO L87 Difference]: Start difference. First operand 9156 states and 17088 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-11-23 13:13:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:00,476 INFO L93 Difference]: Finished difference Result 21936 states and 40952 transitions. [2021-11-23 13:13:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:13:00,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 [2021-11-23 13:13:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:00,512 INFO L225 Difference]: With dead ends: 21936 [2021-11-23 13:13:00,512 INFO L226 Difference]: Without dead ends: 12800 [2021-11-23 13:13:00,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:13:00,534 INFO L933 BasicCegarLoop]: 23756 mSDtfsCounter, 51171 mSDsluCounter, 6825 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51171 SdHoareTripleChecker+Valid, 30581 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:00,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51171 Valid, 30581 Invalid, 138 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:13:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12800 states. [2021-11-23 13:13:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12800 to 9156. [2021-11-23 13:13:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9156 states, 9146 states have (on average 1.8677017275311611) internal successors, (17082), 9155 states have internal predecessors, (17082), 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) [2021-11-23 13:13:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9156 states to 9156 states and 17082 transitions. [2021-11-23 13:13:00,884 INFO L78 Accepts]: Start accepts. Automaton has 9156 states and 17082 transitions. Word has length 69 [2021-11-23 13:13:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:00,886 INFO L470 AbstractCegarLoop]: Abstraction has 9156 states and 17082 transitions. [2021-11-23 13:13:00,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2021-11-23 13:13:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 9156 states and 17082 transitions. [2021-11-23 13:13:00,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 13:13:00,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:00,892 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] [2021-11-23 13:13:00,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:13:00,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:00,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash 972121048, now seen corresponding path program 1 times [2021-11-23 13:13:00,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:00,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963387367] [2021-11-23 13:13:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:00,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:00,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:00,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963387367] [2021-11-23 13:13:00,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963387367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:00,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:00,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:13:00,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531948830] [2021-11-23 13:13:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:00,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:13:00,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:13:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:13:00,973 INFO L87 Difference]: Start difference. First operand 9156 states and 17082 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:02,383 INFO L93 Difference]: Finished difference Result 36397 states and 67956 transitions. [2021-11-23 13:13:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:13:02,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-23 13:13:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:02,443 INFO L225 Difference]: With dead ends: 36397 [2021-11-23 13:13:02,444 INFO L226 Difference]: Without dead ends: 27267 [2021-11-23 13:13:02,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:13:02,462 INFO L933 BasicCegarLoop]: 50817 mSDtfsCounter, 34062 mSDsluCounter, 50722 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34062 SdHoareTripleChecker+Valid, 101539 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:02,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34062 Valid, 101539 Invalid, 126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:13:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27267 states. [2021-11-23 13:13:02,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27267 to 9160. [2021-11-23 13:13:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9160 states, 9150 states have (on average 1.8672131147540985) internal successors, (17085), 9159 states have internal predecessors, (17085), 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) [2021-11-23 13:13:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9160 states to 9160 states and 17085 transitions. [2021-11-23 13:13:03,153 INFO L78 Accepts]: Start accepts. Automaton has 9160 states and 17085 transitions. Word has length 71 [2021-11-23 13:13:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:03,153 INFO L470 AbstractCegarLoop]: Abstraction has 9160 states and 17085 transitions. [2021-11-23 13:13:03,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:03,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9160 states and 17085 transitions. [2021-11-23 13:13:03,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 13:13:03,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:03,165 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] [2021-11-23 13:13:03,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:13:03,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:03,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:03,166 INFO L85 PathProgramCache]: Analyzing trace with hash -97944141, now seen corresponding path program 1 times [2021-11-23 13:13:03,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:03,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135094180] [2021-11-23 13:13:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:03,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:03,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:03,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135094180] [2021-11-23 13:13:03,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135094180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:03,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:03,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:13:03,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436861698] [2021-11-23 13:13:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:03,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:13:03,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:03,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:13:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:13:03,248 INFO L87 Difference]: Start difference. First operand 9160 states and 17085 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:04,664 INFO L93 Difference]: Finished difference Result 36406 states and 67962 transitions. [2021-11-23 13:13:04,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:13:04,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-23 13:13:04,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:04,717 INFO L225 Difference]: With dead ends: 36406 [2021-11-23 13:13:04,717 INFO L226 Difference]: Without dead ends: 27272 [2021-11-23 13:13:04,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:13:04,736 INFO L933 BasicCegarLoop]: 17027 mSDtfsCounter, 50987 mSDsluCounter, 50715 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50987 SdHoareTripleChecker+Valid, 67742 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:04,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50987 Valid, 67742 Invalid, 94 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:13:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27272 states. [2021-11-23 13:13:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27272 to 9166. [2021-11-23 13:13:05,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9166 states, 9156 states have (on average 1.866535605067715) internal successors, (17090), 9165 states have internal predecessors, (17090), 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) [2021-11-23 13:13:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9166 states to 9166 states and 17090 transitions. [2021-11-23 13:13:05,301 INFO L78 Accepts]: Start accepts. Automaton has 9166 states and 17090 transitions. Word has length 72 [2021-11-23 13:13:05,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:05,302 INFO L470 AbstractCegarLoop]: Abstraction has 9166 states and 17090 transitions. [2021-11-23 13:13:05,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:13:05,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9166 states and 17090 transitions. [2021-11-23 13:13:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 13:13:05,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:05,307 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] [2021-11-23 13:13:05,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:13:05,308 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1015146413, now seen corresponding path program 1 times [2021-11-23 13:13:05,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:05,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333352501] [2021-11-23 13:13:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:05,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:05,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:05,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333352501] [2021-11-23 13:13:05,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333352501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:05,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:05,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:13:05,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199855596] [2021-11-23 13:13:05,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:05,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:13:05,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:05,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:13:05,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:13:05,354 INFO L87 Difference]: Start difference. First operand 9166 states and 17090 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2021-11-23 13:13:06,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:06,680 INFO L93 Difference]: Finished difference Result 36419 states and 67972 transitions. [2021-11-23 13:13:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:13:06,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 73 [2021-11-23 13:13:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:06,723 INFO L225 Difference]: With dead ends: 36419 [2021-11-23 13:13:06,723 INFO L226 Difference]: Without dead ends: 27279 [2021-11-23 13:13:06,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:13:06,741 INFO L933 BasicCegarLoop]: 17032 mSDtfsCounter, 50974 mSDsluCounter, 50720 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50974 SdHoareTripleChecker+Valid, 67752 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:06,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50974 Valid, 67752 Invalid, 89 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:13:06,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27279 states. [2021-11-23 13:13:07,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27279 to 9174. [2021-11-23 13:13:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9164 states have (on average 1.8656700130947184) internal successors, (17097), 9173 states have internal predecessors, (17097), 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) [2021-11-23 13:13:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 17097 transitions. [2021-11-23 13:13:07,301 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 17097 transitions. Word has length 73 [2021-11-23 13:13:07,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:07,301 INFO L470 AbstractCegarLoop]: Abstraction has 9174 states and 17097 transitions. [2021-11-23 13:13:07,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2021-11-23 13:13:07,302 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 17097 transitions. [2021-11-23 13:13:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 13:13:07,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:07,308 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] [2021-11-23 13:13:07,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:13:07,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1488565554, now seen corresponding path program 1 times [2021-11-23 13:13:07,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:07,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730964761] [2021-11-23 13:13:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:07,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:07,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:07,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730964761] [2021-11-23 13:13:07,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730964761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:07,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:07,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:13:07,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069721531] [2021-11-23 13:13:07,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:07,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:13:07,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:13:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:13:07,368 INFO L87 Difference]: Start difference. First operand 9174 states and 17097 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-23 13:13:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:08,365 INFO L93 Difference]: Finished difference Result 29304 states and 54659 transitions. [2021-11-23 13:13:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:13:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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 74 [2021-11-23 13:13:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:08,394 INFO L225 Difference]: With dead ends: 29304 [2021-11-23 13:13:08,394 INFO L226 Difference]: Without dead ends: 20162 [2021-11-23 13:13:08,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:13:08,407 INFO L933 BasicCegarLoop]: 23865 mSDtfsCounter, 57868 mSDsluCounter, 27382 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57868 SdHoareTripleChecker+Valid, 51247 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:08,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57868 Valid, 51247 Invalid, 111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:13:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20162 states. [2021-11-23 13:13:08,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20162 to 9160. [2021-11-23 13:13:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9160 states, 9150 states have (on average 1.8656830601092895) internal successors, (17071), 9159 states have internal predecessors, (17071), 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) [2021-11-23 13:13:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9160 states to 9160 states and 17071 transitions. [2021-11-23 13:13:08,872 INFO L78 Accepts]: Start accepts. Automaton has 9160 states and 17071 transitions. Word has length 74 [2021-11-23 13:13:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:08,872 INFO L470 AbstractCegarLoop]: Abstraction has 9160 states and 17071 transitions. [2021-11-23 13:13:08,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2021-11-23 13:13:08,873 INFO L276 IsEmpty]: Start isEmpty. Operand 9160 states and 17071 transitions. [2021-11-23 13:13:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 13:13:08,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:08,879 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] [2021-11-23 13:13:08,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:13:08,879 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:08,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -756813532, now seen corresponding path program 1 times [2021-11-23 13:13:08,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:08,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601286451] [2021-11-23 13:13:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:08,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:08,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:08,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601286451] [2021-11-23 13:13:08,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601286451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:08,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:08,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:13:08,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758002369] [2021-11-23 13:13:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:08,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:13:08,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:08,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:13:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:13:08,938 INFO L87 Difference]: Start difference. First operand 9160 states and 17071 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-23 13:13:10,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:10,164 INFO L93 Difference]: Finished difference Result 29233 states and 54533 transitions. [2021-11-23 13:13:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:13:10,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2021-11-23 13:13:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:10,196 INFO L225 Difference]: With dead ends: 29233 [2021-11-23 13:13:10,196 INFO L226 Difference]: Without dead ends: 20136 [2021-11-23 13:13:10,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:13:10,208 INFO L933 BasicCegarLoop]: 23840 mSDtfsCounter, 57798 mSDsluCounter, 27370 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57798 SdHoareTripleChecker+Valid, 51210 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:10,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57798 Valid, 51210 Invalid, 106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:13:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20136 states. [2021-11-23 13:13:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20136 to 9154. [2021-11-23 13:13:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9154 states, 9144 states have (on average 1.8654855643044619) internal successors, (17058), 9153 states have internal predecessors, (17058), 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) [2021-11-23 13:13:10,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 17058 transitions. [2021-11-23 13:13:10,710 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 17058 transitions. Word has length 76 [2021-11-23 13:13:10,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:10,711 INFO L470 AbstractCegarLoop]: Abstraction has 9154 states and 17058 transitions. [2021-11-23 13:13:10,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-23 13:13:10,711 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 17058 transitions. [2021-11-23 13:13:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-23 13:13:10,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:10,717 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] [2021-11-23 13:13:10,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:13:10,717 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:10,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:10,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2030841797, now seen corresponding path program 1 times [2021-11-23 13:13:10,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:10,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151964638] [2021-11-23 13:13:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:10,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:10,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:10,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151964638] [2021-11-23 13:13:10,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151964638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:10,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:10,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:13:10,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669431398] [2021-11-23 13:13:10,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:13:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:13:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:13:10,778 INFO L87 Difference]: Start difference. First operand 9154 states and 17058 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-23 13:13:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:11,774 INFO L93 Difference]: Finished difference Result 21937 states and 40899 transitions. [2021-11-23 13:13:11,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:13:11,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2021-11-23 13:13:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:11,796 INFO L225 Difference]: With dead ends: 21937 [2021-11-23 13:13:11,796 INFO L226 Difference]: Without dead ends: 12839 [2021-11-23 13:13:11,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:13:11,805 INFO L933 BasicCegarLoop]: 23752 mSDtfsCounter, 33955 mSDsluCounter, 6871 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33955 SdHoareTripleChecker+Valid, 30623 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:11,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33955 Valid, 30623 Invalid, 226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:13:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12839 states. [2021-11-23 13:13:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12839 to 9154. [2021-11-23 13:13:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9154 states, 9144 states have (on average 1.8646106736657917) internal successors, (17050), 9153 states have internal predecessors, (17050), 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) [2021-11-23 13:13:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9154 states to 9154 states and 17050 transitions. [2021-11-23 13:13:12,240 INFO L78 Accepts]: Start accepts. Automaton has 9154 states and 17050 transitions. Word has length 78 [2021-11-23 13:13:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:12,241 INFO L470 AbstractCegarLoop]: Abstraction has 9154 states and 17050 transitions. [2021-11-23 13:13:12,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-23 13:13:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9154 states and 17050 transitions. [2021-11-23 13:13:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 13:13:12,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:12,246 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] [2021-11-23 13:13:12,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:13:12,246 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:12,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1770785484, now seen corresponding path program 1 times [2021-11-23 13:13:12,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285476056] [2021-11-23 13:13:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:12,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:12,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285476056] [2021-11-23 13:13:12,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285476056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:12,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:12,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:13:12,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35391542] [2021-11-23 13:13:12,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:12,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:13:12,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:13:12,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:12,306 INFO L87 Difference]: Start difference. First operand 9154 states and 17050 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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) [2021-11-23 13:13:12,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:12,972 INFO L93 Difference]: Finished difference Result 18395 states and 34109 transitions. [2021-11-23 13:13:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:13:12,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-23 13:13:12,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:12,991 INFO L225 Difference]: With dead ends: 18395 [2021-11-23 13:13:12,991 INFO L226 Difference]: Without dead ends: 10156 [2021-11-23 13:13:13,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:13,001 INFO L933 BasicCegarLoop]: 18691 mSDtfsCounter, 9458 mSDsluCounter, 9167 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9458 SdHoareTripleChecker+Valid, 27858 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:13,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9458 Valid, 27858 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:13:13,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10156 states. [2021-11-23 13:13:13,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10156 to 10136. [2021-11-23 13:13:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10136 states, 10126 states have (on average 1.8494963460398972) internal successors, (18728), 10135 states have internal predecessors, (18728), 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) [2021-11-23 13:13:13,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10136 states to 10136 states and 18728 transitions. [2021-11-23 13:13:13,454 INFO L78 Accepts]: Start accepts. Automaton has 10136 states and 18728 transitions. Word has length 79 [2021-11-23 13:13:13,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:13,454 INFO L470 AbstractCegarLoop]: Abstraction has 10136 states and 18728 transitions. [2021-11-23 13:13:13,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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) [2021-11-23 13:13:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 10136 states and 18728 transitions. [2021-11-23 13:13:13,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 13:13:13,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:13,459 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] [2021-11-23 13:13:13,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:13:13,460 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1748153230, now seen corresponding path program 1 times [2021-11-23 13:13:13,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:13,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294462453] [2021-11-23 13:13:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:13,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:13,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:13,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:13,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294462453] [2021-11-23 13:13:13,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294462453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:13,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:13,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:13:13,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327123129] [2021-11-23 13:13:13,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:13,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:13:13,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:13:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:13,518 INFO L87 Difference]: Start difference. First operand 10136 states and 18728 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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) [2021-11-23 13:13:15,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:15,151 INFO L93 Difference]: Finished difference Result 28015 states and 51789 transitions. [2021-11-23 13:13:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:13:15,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-23 13:13:15,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:15,180 INFO L225 Difference]: With dead ends: 28015 [2021-11-23 13:13:15,180 INFO L226 Difference]: Without dead ends: 18870 [2021-11-23 13:13:15,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:15,196 INFO L933 BasicCegarLoop]: 17731 mSDtfsCounter, 16829 mSDsluCounter, 14582 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16829 SdHoareTripleChecker+Valid, 32313 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:15,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16829 Valid, 32313 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:13:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18870 states. [2021-11-23 13:13:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18870 to 18850. [2021-11-23 13:13:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18850 states, 18840 states have (on average 1.8426751592356687) internal successors, (34716), 18849 states have internal predecessors, (34716), 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) [2021-11-23 13:13:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18850 states to 18850 states and 34716 transitions. [2021-11-23 13:13:16,138 INFO L78 Accepts]: Start accepts. Automaton has 18850 states and 34716 transitions. Word has length 79 [2021-11-23 13:13:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:16,139 INFO L470 AbstractCegarLoop]: Abstraction has 18850 states and 34716 transitions. [2021-11-23 13:13:16,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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) [2021-11-23 13:13:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 18850 states and 34716 transitions. [2021-11-23 13:13:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 13:13:16,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:16,143 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] [2021-11-23 13:13:16,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:13:16,144 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:16,144 INFO L85 PathProgramCache]: Analyzing trace with hash 545863012, now seen corresponding path program 1 times [2021-11-23 13:13:16,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:16,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499976927] [2021-11-23 13:13:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:16,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:16,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:16,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499976927] [2021-11-23 13:13:16,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499976927] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:16,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:16,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:13:16,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191183814] [2021-11-23 13:13:16,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:16,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:13:16,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:13:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:16,198 INFO L87 Difference]: Start difference. First operand 18850 states and 34716 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-23 13:13:18,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:18,248 INFO L93 Difference]: Finished difference Result 53421 states and 98397 transitions. [2021-11-23 13:13:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:13:18,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-23 13:13:18,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:18,309 INFO L225 Difference]: With dead ends: 53421 [2021-11-23 13:13:18,309 INFO L226 Difference]: Without dead ends: 36212 [2021-11-23 13:13:18,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:18,329 INFO L933 BasicCegarLoop]: 16877 mSDtfsCounter, 16814 mSDsluCounter, 14613 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16814 SdHoareTripleChecker+Valid, 31490 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:18,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16814 Valid, 31490 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:13:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36212 states. [2021-11-23 13:13:19,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36212 to 36192. [2021-11-23 13:13:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36192 states, 36182 states have (on average 1.8360234370681554) internal successors, (66431), 36191 states have internal predecessors, (66431), 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) [2021-11-23 13:13:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36192 states to 36192 states and 66431 transitions. [2021-11-23 13:13:19,968 INFO L78 Accepts]: Start accepts. Automaton has 36192 states and 66431 transitions. Word has length 80 [2021-11-23 13:13:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:19,968 INFO L470 AbstractCegarLoop]: Abstraction has 36192 states and 66431 transitions. [2021-11-23 13:13:19,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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) [2021-11-23 13:13:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 36192 states and 66431 transitions. [2021-11-23 13:13:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 13:13:19,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:19,971 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] [2021-11-23 13:13:19,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:13:19,971 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash 655889193, now seen corresponding path program 1 times [2021-11-23 13:13:19,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:19,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819707908] [2021-11-23 13:13:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:20,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:20,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:20,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819707908] [2021-11-23 13:13:20,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819707908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:20,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:20,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:13:20,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906935270] [2021-11-23 13:13:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:20,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:13:20,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:13:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:20,017 INFO L87 Difference]: Start difference. First operand 36192 states and 66431 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-23 13:13:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:13:23,160 INFO L93 Difference]: Finished difference Result 104061 states and 190974 transitions. [2021-11-23 13:13:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:13:23,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 81 [2021-11-23 13:13:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:13:23,262 INFO L225 Difference]: With dead ends: 104061 [2021-11-23 13:13:23,262 INFO L226 Difference]: Without dead ends: 70700 [2021-11-23 13:13:23,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:23,285 INFO L933 BasicCegarLoop]: 16863 mSDtfsCounter, 16799 mSDsluCounter, 14644 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16799 SdHoareTripleChecker+Valid, 31507 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:13:23,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16799 Valid, 31507 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:13:23,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70700 states. [2021-11-23 13:13:26,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70700 to 70680. [2021-11-23 13:13:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70680 states, 70670 states have (on average 1.829220319796236) internal successors, (129271), 70679 states have internal predecessors, (129271), 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) [2021-11-23 13:13:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70680 states to 70680 states and 129271 transitions. [2021-11-23 13:13:26,547 INFO L78 Accepts]: Start accepts. Automaton has 70680 states and 129271 transitions. Word has length 81 [2021-11-23 13:13:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:13:26,548 INFO L470 AbstractCegarLoop]: Abstraction has 70680 states and 129271 transitions. [2021-11-23 13:13:26,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2021-11-23 13:13:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 70680 states and 129271 transitions. [2021-11-23 13:13:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-23 13:13:26,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:13:26,551 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] [2021-11-23 13:13:26,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:13:26,551 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-23 13:13:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:13:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1501949217, now seen corresponding path program 1 times [2021-11-23 13:13:26,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:13:26,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129221328] [2021-11-23 13:13:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:13:26,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:13:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:13:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:13:26,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:13:26,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129221328] [2021-11-23 13:13:26,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129221328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:13:26,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:13:26,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:13:26,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132669322] [2021-11-23 13:13:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:13:26,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:13:26,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:13:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:13:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:13:26,601 INFO L87 Difference]: Start difference. First operand 70680 states and 129271 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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)