./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU --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 34d763a2f472f3a687bfbf36d5640fefeb493025c54d66615a1e88fff5fbc163 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:54:14,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:54:14,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:54:14,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:54:14,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:54:14,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:54:14,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:54:14,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:54:14,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:54:14,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:54:14,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:54:14,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:54:14,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:54:14,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:54:14,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:54:14,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:54:14,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:54:14,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:54:14,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:54:14,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:54:14,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:54:14,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:54:14,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:54:14,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:54:14,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:54:14,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:54:14,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:54:14,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:54:14,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:54:14,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:54:14,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:54:14,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:54:14,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:54:14,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:54:14,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:54:14,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:54:14,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:54:14,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:54:14,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:54:14,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:54:14,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:54:14,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:54:14,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:54:14,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:54:14,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:54:14,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:54:14,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:54:14,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:54:14,372 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:54:14,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:54:14,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:54:14,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:54:14,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:54:14,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:54:14,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:54:14,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:54:14,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:54:14,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:54:14,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:54:14,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:54:14,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:54:14,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:54:14,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:54:14,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:54:14,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:14,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:54:14,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:54:14,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:54:14,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:54:14,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:54:14,387 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:54:14,387 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:54:14,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:54:14,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:54:14,388 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_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d763a2f472f3a687bfbf36d5640fefeb493025c54d66615a1e88fff5fbc163 [2021-11-02 22:54:14,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:54:14,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:54:14,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:54:14,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:54:14,819 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:54:14,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/email_spec3_product34.cil.c [2021-11-02 22:54:14,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/data/50d7ee93a/69d0aad2145d4d5faf5d6630b0c8885c/FLAG3f16ba2e5 [2021-11-02 22:54:15,813 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:54:15,814 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/sv-benchmarks/c/product-lines/email_spec3_product34.cil.c [2021-11-02 22:54:15,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/data/50d7ee93a/69d0aad2145d4d5faf5d6630b0c8885c/FLAG3f16ba2e5 [2021-11-02 22:54:16,337 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/data/50d7ee93a/69d0aad2145d4d5faf5d6630b0c8885c [2021-11-02 22:54:16,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:54:16,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:54:16,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:16,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:54:16,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:54:16,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:16" (1/1) ... [2021-11-02 22:54:16,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a886c1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:16, skipping insertion in model container [2021-11-02 22:54:16,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:54:16" (1/1) ... [2021-11-02 22:54:16,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:54:16,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:54:17,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/sv-benchmarks/c/product-lines/email_spec3_product34.cil.c[43803,43816] [2021-11-02 22:54:17,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:17,548 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:54:17,681 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/sv-benchmarks/c/product-lines/email_spec3_product34.cil.c[43803,43816] [2021-11-02 22:54:17,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:54:17,775 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:54:17,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17 WrapperNode [2021-11-02 22:54:17,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:54:17,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:54:17,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:54:17,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:54:17,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:17,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:54:18,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:54:18,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:54:18,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:54:18,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:54:18,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:54:18,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:54:18,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:54:18,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (1/1) ... [2021-11-02 22:54:18,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:54:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:18,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:54:18,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:54:18,740 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-02 22:54:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:54:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:54:18,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:54:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:54:24,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:54:24,611 INFO L299 CfgBuilder]: Removed 909 assume(true) statements. [2021-11-02 22:54:24,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:24 BoogieIcfgContainer [2021-11-02 22:54:24,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:54:24,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:54:24,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:54:24,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:54:24,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:54:16" (1/3) ... [2021-11-02 22:54:24,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cf2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:54:24, skipping insertion in model container [2021-11-02 22:54:24,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:54:17" (2/3) ... [2021-11-02 22:54:24,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cf2b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:54:24, skipping insertion in model container [2021-11-02 22:54:24,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:54:24" (3/3) ... [2021-11-02 22:54:24,629 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product34.cil.c [2021-11-02 22:54:24,637 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:54:24,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-02 22:54:24,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:54:24,732 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 [2021-11-02 22:54:24,732 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-02 22:54:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 1380 states, 1367 states have (on average 1.7307973664959766) internal successors, (2366), 1379 states have internal predecessors, (2366), 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) [2021-11-02 22:54:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-02 22:54:24,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:24,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:24,829 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2095635949, now seen corresponding path program 1 times [2021-11-02 22:54:24,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:24,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937944154] [2021-11-02 22:54:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:24,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:25,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:25,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937944154] [2021-11-02 22:54:25,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937944154] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:25,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:25,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:25,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517870720] [2021-11-02 22:54:25,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:25,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:25,776 INFO L87 Difference]: Start difference. First operand has 1380 states, 1367 states have (on average 1.7307973664959766) internal successors, (2366), 1379 states have internal predecessors, (2366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:26,097 INFO L93 Difference]: Finished difference Result 4105 states and 7040 transitions. [2021-11-02 22:54:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:26,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-02 22:54:26,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:26,142 INFO L225 Difference]: With dead ends: 4105 [2021-11-02 22:54:26,143 INFO L226 Difference]: Without dead ends: 2412 [2021-11-02 22:54:26,153 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:26,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-02 22:54:26,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 1215. [2021-11-02 22:54:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1203 states have (on average 1.7265170407315045) internal successors, (2077), 1214 states have internal predecessors, (2077), 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) [2021-11-02 22:54:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2077 transitions. [2021-11-02 22:54:26,342 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2077 transitions. Word has length 60 [2021-11-02 22:54:26,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:26,343 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2077 transitions. [2021-11-02 22:54:26,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2077 transitions. [2021-11-02 22:54:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:54:26,363 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:26,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:26,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:54:26,364 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:26,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1257187855, now seen corresponding path program 1 times [2021-11-02 22:54:26,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:26,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093222603] [2021-11-02 22:54:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:26,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:26,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:26,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093222603] [2021-11-02 22:54:26,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093222603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:26,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:26,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:54:26,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355761272] [2021-11-02 22:54:26,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:26,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:26,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:26,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:26,622 INFO L87 Difference]: Start difference. First operand 1215 states and 2077 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:27,081 INFO L93 Difference]: Finished difference Result 3594 states and 6147 transitions. [2021-11-02 22:54:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:54:27,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-02 22:54:27,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:27,112 INFO L225 Difference]: With dead ends: 3594 [2021-11-02 22:54:27,112 INFO L226 Difference]: Without dead ends: 2398 [2021-11-02 22:54:27,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:54:27,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2021-11-02 22:54:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1215. [2021-11-02 22:54:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1203 states have (on average 1.7256857855361596) internal successors, (2076), 1214 states have internal predecessors, (2076), 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) [2021-11-02 22:54:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2076 transitions. [2021-11-02 22:54:27,221 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2076 transitions. Word has length 62 [2021-11-02 22:54:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:27,222 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2076 transitions. [2021-11-02 22:54:27,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:54:27,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2076 transitions. [2021-11-02 22:54:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-02 22:54:27,227 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:27,227 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:27,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:54:27,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:27,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1687603074, now seen corresponding path program 1 times [2021-11-02 22:54:27,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:27,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839838275] [2021-11-02 22:54:27,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:27,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:27,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:27,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839838275] [2021-11-02 22:54:27,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839838275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:27,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:27,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:27,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148886303] [2021-11-02 22:54:27,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:27,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:27,452 INFO L87 Difference]: Start difference. First operand 1215 states and 2076 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2021-11-02 22:54:27,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:27,573 INFO L93 Difference]: Finished difference Result 2412 states and 4126 transitions. [2021-11-02 22:54:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:27,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 [2021-11-02 22:54:27,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:27,586 INFO L225 Difference]: With dead ends: 2412 [2021-11-02 22:54:27,587 INFO L226 Difference]: Without dead ends: 1220 [2021-11-02 22:54:27,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-11-02 22:54:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1215. [2021-11-02 22:54:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1203 states have (on average 1.7231920199501247) internal successors, (2073), 1214 states have internal predecessors, (2073), 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) [2021-11-02 22:54:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2073 transitions. [2021-11-02 22:54:27,713 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2073 transitions. Word has length 63 [2021-11-02 22:54:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:27,713 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2073 transitions. [2021-11-02 22:54:27,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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) [2021-11-02 22:54:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2073 transitions. [2021-11-02 22:54:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 22:54:27,717 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:27,717 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:27,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:54:27,718 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1912690023, now seen corresponding path program 1 times [2021-11-02 22:54:27,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:27,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263404507] [2021-11-02 22:54:27,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:27,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:27,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:27,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263404507] [2021-11-02 22:54:27,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263404507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:27,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:27,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:54:27,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205018268] [2021-11-02 22:54:27,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:27,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:27,887 INFO L87 Difference]: Start difference. First operand 1215 states and 2073 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2021-11-02 22:54:28,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:28,248 INFO L93 Difference]: Finished difference Result 3584 states and 6127 transitions. [2021-11-02 22:54:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 [2021-11-02 22:54:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:28,275 INFO L225 Difference]: With dead ends: 3584 [2021-11-02 22:54:28,275 INFO L226 Difference]: Without dead ends: 2396 [2021-11-02 22:54:28,280 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:54:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2021-11-02 22:54:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 1215. [2021-11-02 22:54:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1203 states have (on average 1.7223607647547796) internal successors, (2072), 1214 states have internal predecessors, (2072), 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) [2021-11-02 22:54:28,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2072 transitions. [2021-11-02 22:54:28,380 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2072 transitions. Word has length 65 [2021-11-02 22:54:28,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:28,382 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2072 transitions. [2021-11-02 22:54:28,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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) [2021-11-02 22:54:28,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2072 transitions. [2021-11-02 22:54:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 22:54:28,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:28,387 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:28,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:54:28,388 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:28,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:28,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1097420796, now seen corresponding path program 1 times [2021-11-02 22:54:28,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:28,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390285466] [2021-11-02 22:54:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:28,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:28,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:28,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390285466] [2021-11-02 22:54:28,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390285466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:28,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:28,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:54:28,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088752447] [2021-11-02 22:54:28,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:28,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:28,572 INFO L87 Difference]: Start difference. First operand 1215 states and 2072 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-02 22:54:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:28,975 INFO L93 Difference]: Finished difference Result 3589 states and 6131 transitions. [2021-11-02 22:54:28,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-02 22:54:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:28,998 INFO L225 Difference]: With dead ends: 3589 [2021-11-02 22:54:28,999 INFO L226 Difference]: Without dead ends: 2401 [2021-11-02 22:54:29,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:54:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-02 22:54:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1215. [2021-11-02 22:54:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1203 states have (on average 1.7215295095594347) internal successors, (2071), 1214 states have internal predecessors, (2071), 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) [2021-11-02 22:54:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2071 transitions. [2021-11-02 22:54:29,117 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2071 transitions. Word has length 66 [2021-11-02 22:54:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:29,118 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 2071 transitions. [2021-11-02 22:54:29,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-02 22:54:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2071 transitions. [2021-11-02 22:54:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 22:54:29,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:29,121 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:29,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:54:29,122 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:29,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:29,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1700193516, now seen corresponding path program 1 times [2021-11-02 22:54:29,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:29,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482105610] [2021-11-02 22:54:29,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:29,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:29,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:29,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482105610] [2021-11-02 22:54:29,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482105610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:29,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:29,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:29,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780923165] [2021-11-02 22:54:29,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:29,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:29,286 INFO L87 Difference]: Start difference. First operand 1215 states and 2071 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) [2021-11-02 22:54:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:29,399 INFO L93 Difference]: Finished difference Result 2149 states and 3636 transitions. [2021-11-02 22:54:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:29,400 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 [2021-11-02 22:54:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:29,414 INFO L225 Difference]: With dead ends: 2149 [2021-11-02 22:54:29,415 INFO L226 Difference]: Without dead ends: 1218 [2021-11-02 22:54:29,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2021-11-02 22:54:29,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1217. [2021-11-02 22:54:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1205 states have (on average 1.720331950207469) internal successors, (2073), 1216 states have internal predecessors, (2073), 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) [2021-11-02 22:54:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 2073 transitions. [2021-11-02 22:54:29,521 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 2073 transitions. Word has length 67 [2021-11-02 22:54:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:29,522 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 2073 transitions. [2021-11-02 22:54:29,522 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) [2021-11-02 22:54:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 2073 transitions. [2021-11-02 22:54:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 22:54:29,525 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:29,526 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:29,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:54:29,526 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:29,527 INFO L85 PathProgramCache]: Analyzing trace with hash 706937106, now seen corresponding path program 1 times [2021-11-02 22:54:29,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:29,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612149258] [2021-11-02 22:54:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:29,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:29,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:29,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612149258] [2021-11-02 22:54:29,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612149258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:29,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:29,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:29,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496631751] [2021-11-02 22:54:29,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:29,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:29,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:29,670 INFO L87 Difference]: Start difference. First operand 1217 states and 2073 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2021-11-02 22:54:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:29,908 INFO L93 Difference]: Finished difference Result 3537 states and 6043 transitions. [2021-11-02 22:54:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 [2021-11-02 22:54:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:29,932 INFO L225 Difference]: With dead ends: 3537 [2021-11-02 22:54:29,932 INFO L226 Difference]: Without dead ends: 2351 [2021-11-02 22:54:29,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:29,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2021-11-02 22:54:30,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1420. [2021-11-02 22:54:30,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1420 states, 1408 states have (on average 1.7386363636363635) internal successors, (2448), 1419 states have internal predecessors, (2448), 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) [2021-11-02 22:54:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1420 states to 1420 states and 2448 transitions. [2021-11-02 22:54:30,074 INFO L78 Accepts]: Start accepts. Automaton has 1420 states and 2448 transitions. Word has length 73 [2021-11-02 22:54:30,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:30,075 INFO L470 AbstractCegarLoop]: Abstraction has 1420 states and 2448 transitions. [2021-11-02 22:54:30,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2021-11-02 22:54:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1420 states and 2448 transitions. [2021-11-02 22:54:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 22:54:30,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:30,079 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:30,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:54:30,080 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:30,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 532222513, now seen corresponding path program 1 times [2021-11-02 22:54:30,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:30,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000882065] [2021-11-02 22:54:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:30,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:30,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:30,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000882065] [2021-11-02 22:54:30,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000882065] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:30,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222718448] [2021-11-02 22:54:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:30,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:54:30,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:54:30,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:54:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:30,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:54:30,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:54:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:31,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222718448] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:54:31,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:54:31,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:54:31,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339770382] [2021-11-02 22:54:31,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:31,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:31,110 INFO L87 Difference]: Start difference. First operand 1420 states and 2448 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2021-11-02 22:54:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:31,432 INFO L93 Difference]: Finished difference Result 3541 states and 6046 transitions. [2021-11-02 22:54:31,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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 74 [2021-11-02 22:54:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:31,460 INFO L225 Difference]: With dead ends: 3541 [2021-11-02 22:54:31,460 INFO L226 Difference]: Without dead ends: 2610 [2021-11-02 22:54:31,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:31,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2021-11-02 22:54:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 1677. [2021-11-02 22:54:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1677 states, 1665 states have (on average 1.7537537537537538) internal successors, (2920), 1676 states have internal predecessors, (2920), 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) [2021-11-02 22:54:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 2920 transitions. [2021-11-02 22:54:31,663 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 2920 transitions. Word has length 74 [2021-11-02 22:54:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:31,664 INFO L470 AbstractCegarLoop]: Abstraction has 1677 states and 2920 transitions. [2021-11-02 22:54:31,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 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) [2021-11-02 22:54:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 2920 transitions. [2021-11-02 22:54:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:54:31,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:31,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:31,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:54:31,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83d12aea-ffdd-4d2a-b9e9-96720618b543/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:54:31,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:31,899 INFO L85 PathProgramCache]: Analyzing trace with hash -482335356, now seen corresponding path program 1 times [2021-11-02 22:54:31,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:31,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519084046] [2021-11-02 22:54:31,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:31,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:32,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:32,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519084046] [2021-11-02 22:54:32,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519084046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:32,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:32,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:32,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958738150] [2021-11-02 22:54:32,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:32,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:32,010 INFO L87 Difference]: Start difference. First operand 1677 states and 2920 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2021-11-02 22:54:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:32,254 INFO L93 Difference]: Finished difference Result 4654 states and 8102 transitions. [2021-11-02 22:54:32,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:32,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 [2021-11-02 22:54:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:32,283 INFO L225 Difference]: With dead ends: 4654 [2021-11-02 22:54:32,284 INFO L226 Difference]: Without dead ends: 3066 [2021-11-02 22:54:32,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-11-02 22:54:32,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2135. [2021-11-02 22:54:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2123 states have (on average 1.7720207253886011) internal successors, (3762), 2134 states have internal predecessors, (3762), 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) [2021-11-02 22:54:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3762 transitions. [2021-11-02 22:54:32,480 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3762 transitions. Word has length 80 [2021-11-02 22:54:32,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:32,481 INFO L470 AbstractCegarLoop]: Abstraction has 2135 states and 3762 transitions. [2021-11-02 22:54:32,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2021-11-02 22:54:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3762 transitions. [2021-11-02 22:54:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 22:54:32,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:32,488 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:32,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:54:32,489 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1567141772, now seen corresponding path program 2 times [2021-11-02 22:54:32,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:32,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624987911] [2021-11-02 22:54:32,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:32,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:32,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:32,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:32,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624987911] [2021-11-02 22:54:32,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624987911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:32,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:32,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:32,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544956227] [2021-11-02 22:54:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:32,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:32,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:32,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:32,631 INFO L87 Difference]: Start difference. First operand 2135 states and 3762 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2021-11-02 22:54:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:32,869 INFO L93 Difference]: Finished difference Result 4911 states and 8572 transitions. [2021-11-02 22:54:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:32,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 [2021-11-02 22:54:32,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:32,915 INFO L225 Difference]: With dead ends: 4911 [2021-11-02 22:54:32,916 INFO L226 Difference]: Without dead ends: 3066 [2021-11-02 22:54:32,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:32,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-11-02 22:54:33,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2135. [2021-11-02 22:54:33,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2123 states have (on average 1.771078662270372) internal successors, (3760), 2134 states have internal predecessors, (3760), 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) [2021-11-02 22:54:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3760 transitions. [2021-11-02 22:54:33,142 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3760 transitions. Word has length 81 [2021-11-02 22:54:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:33,143 INFO L470 AbstractCegarLoop]: Abstraction has 2135 states and 3760 transitions. [2021-11-02 22:54:33,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2021-11-02 22:54:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3760 transitions. [2021-11-02 22:54:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 22:54:33,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:33,150 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:33,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 22:54:33,151 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:33,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:33,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1750087635, now seen corresponding path program 1 times [2021-11-02 22:54:33,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:33,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080477632] [2021-11-02 22:54:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:33,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:33,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:33,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080477632] [2021-11-02 22:54:33,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080477632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:33,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:33,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:33,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920151963] [2021-11-02 22:54:33,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:33,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:33,252 INFO L87 Difference]: Start difference. First operand 2135 states and 3760 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2021-11-02 22:54:33,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:33,592 INFO L93 Difference]: Finished difference Result 6000 states and 10577 transitions. [2021-11-02 22:54:33,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:33,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 [2021-11-02 22:54:33,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:33,606 INFO L225 Difference]: With dead ends: 6000 [2021-11-02 22:54:33,607 INFO L226 Difference]: Without dead ends: 3962 [2021-11-02 22:54:33,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-11-02 22:54:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3031. [2021-11-02 22:54:33,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3019 states have (on average 1.790990394170255) internal successors, (5407), 3030 states have internal predecessors, (5407), 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) [2021-11-02 22:54:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 5407 transitions. [2021-11-02 22:54:33,877 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 5407 transitions. Word has length 81 [2021-11-02 22:54:33,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:33,879 INFO L470 AbstractCegarLoop]: Abstraction has 3031 states and 5407 transitions. [2021-11-02 22:54:33,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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) [2021-11-02 22:54:33,880 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 5407 transitions. [2021-11-02 22:54:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-02 22:54:33,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:33,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:33,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:54:33,890 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash -136830906, now seen corresponding path program 1 times [2021-11-02 22:54:33,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:33,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16248543] [2021-11-02 22:54:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:33,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:34,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:34,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16248543] [2021-11-02 22:54:34,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16248543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:34,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:34,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:34,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424148143] [2021-11-02 22:54:34,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:34,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:34,027 INFO L87 Difference]: Start difference. First operand 3031 states and 5407 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2021-11-02 22:54:34,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:34,450 INFO L93 Difference]: Finished difference Result 8424 states and 15037 transitions. [2021-11-02 22:54:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) Word has length 82 [2021-11-02 22:54:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:34,470 INFO L225 Difference]: With dead ends: 8424 [2021-11-02 22:54:34,470 INFO L226 Difference]: Without dead ends: 5524 [2021-11-02 22:54:34,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2021-11-02 22:54:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 4593. [2021-11-02 22:54:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4593 states, 4581 states have (on average 1.8065924470639598) internal successors, (8276), 4592 states have internal predecessors, (8276), 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) [2021-11-02 22:54:34,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4593 states to 4593 states and 8276 transitions. [2021-11-02 22:54:34,865 INFO L78 Accepts]: Start accepts. Automaton has 4593 states and 8276 transitions. Word has length 82 [2021-11-02 22:54:34,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:34,866 INFO L470 AbstractCegarLoop]: Abstraction has 4593 states and 8276 transitions. [2021-11-02 22:54:34,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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) [2021-11-02 22:54:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4593 states and 8276 transitions. [2021-11-02 22:54:34,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:54:34,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:34,881 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:34,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:54:34,882 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:34,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:34,883 INFO L85 PathProgramCache]: Analyzing trace with hash 369108580, now seen corresponding path program 1 times [2021-11-02 22:54:34,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:34,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841585333] [2021-11-02 22:54:34,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:34,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:34,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:34,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841585333] [2021-11-02 22:54:34,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841585333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:34,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:34,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:34,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822636379] [2021-11-02 22:54:34,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:34,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:34,970 INFO L87 Difference]: Start difference. First operand 4593 states and 8276 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-02 22:54:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:35,635 INFO L93 Difference]: Finished difference Result 12826 states and 23127 transitions. [2021-11-02 22:54:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-02 22:54:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:35,670 INFO L225 Difference]: With dead ends: 12826 [2021-11-02 22:54:35,670 INFO L226 Difference]: Without dead ends: 8398 [2021-11-02 22:54:35,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8398 states. [2021-11-02 22:54:36,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8398 to 7467. [2021-11-02 22:54:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 7455 states have (on average 1.817437961099933) internal successors, (13549), 7466 states have internal predecessors, (13549), 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) [2021-11-02 22:54:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 13549 transitions. [2021-11-02 22:54:36,259 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 13549 transitions. Word has length 83 [2021-11-02 22:54:36,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:36,260 INFO L470 AbstractCegarLoop]: Abstraction has 7467 states and 13549 transitions. [2021-11-02 22:54:36,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-02 22:54:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 13549 transitions. [2021-11-02 22:54:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:54:36,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:36,277 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:36,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:54:36,278 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash 158418376, now seen corresponding path program 1 times [2021-11-02 22:54:36,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:36,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741331836] [2021-11-02 22:54:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:36,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:54:36,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:36,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741331836] [2021-11-02 22:54:36,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741331836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:36,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:36,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:54:36,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829694828] [2021-11-02 22:54:36,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:36,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:36,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:36,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:36,392 INFO L87 Difference]: Start difference. First operand 7467 states and 13549 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2021-11-02 22:54:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:38,018 INFO L93 Difference]: Finished difference Result 21534 states and 39100 transitions. [2021-11-02 22:54:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:54:38,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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 84 [2021-11-02 22:54:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:38,072 INFO L225 Difference]: With dead ends: 21534 [2021-11-02 22:54:38,073 INFO L226 Difference]: Without dead ends: 14357 [2021-11-02 22:54:38,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:54:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14357 states. [2021-11-02 22:54:38,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14357 to 7467. [2021-11-02 22:54:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7467 states, 7455 states have (on average 1.8107310529845742) internal successors, (13499), 7466 states have internal predecessors, (13499), 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) [2021-11-02 22:54:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7467 states to 7467 states and 13499 transitions. [2021-11-02 22:54:38,752 INFO L78 Accepts]: Start accepts. Automaton has 7467 states and 13499 transitions. Word has length 84 [2021-11-02 22:54:38,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:38,752 INFO L470 AbstractCegarLoop]: Abstraction has 7467 states and 13499 transitions. [2021-11-02 22:54:38,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 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) [2021-11-02 22:54:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7467 states and 13499 transitions. [2021-11-02 22:54:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:54:38,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:38,769 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:38,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:54:38,770 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2057338103, now seen corresponding path program 1 times [2021-11-02 22:54:38,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:38,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812859869] [2021-11-02 22:54:38,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:38,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:38,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:54:38,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:38,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812859869] [2021-11-02 22:54:38,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812859869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:38,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:38,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:54:38,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125628604] [2021-11-02 22:54:38,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:54:38,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:54:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:38,864 INFO L87 Difference]: Start difference. First operand 7467 states and 13499 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-02 22:54:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:39,629 INFO L93 Difference]: Finished difference Result 21774 states and 39410 transitions. [2021-11-02 22:54:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:54:39,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2021-11-02 22:54:39,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:39,694 INFO L225 Difference]: With dead ends: 21774 [2021-11-02 22:54:39,695 INFO L226 Difference]: Without dead ends: 14480 [2021-11-02 22:54:39,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:54:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14480 states. [2021-11-02 22:54:40,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14480 to 13549. [2021-11-02 22:54:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13549 states, 13537 states have (on average 1.8175371204845978) internal successors, (24604), 13548 states have internal predecessors, (24604), 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) [2021-11-02 22:54:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 24604 transitions. [2021-11-02 22:54:40,836 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 24604 transitions. Word has length 84 [2021-11-02 22:54:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:40,837 INFO L470 AbstractCegarLoop]: Abstraction has 13549 states and 24604 transitions. [2021-11-02 22:54:40,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-11-02 22:54:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 24604 transitions. [2021-11-02 22:54:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 22:54:40,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:40,860 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:40,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:54:40,861 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:40,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1129782339, now seen corresponding path program 1 times [2021-11-02 22:54:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:40,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616749529] [2021-11-02 22:54:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:40,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:54:40,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:40,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616749529] [2021-11-02 22:54:40,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616749529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:40,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:40,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:54:40,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432531736] [2021-11-02 22:54:40,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:54:40,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:40,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:54:40,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:54:40,983 INFO L87 Difference]: Start difference. First operand 13549 states and 24604 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2021-11-02 22:54:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:43,767 INFO L93 Difference]: Finished difference Result 30310 states and 54556 transitions. [2021-11-02 22:54:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:54:43,768 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 85 [2021-11-02 22:54:43,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:43,901 INFO L225 Difference]: With dead ends: 30310 [2021-11-02 22:54:43,902 INFO L226 Difference]: Without dead ends: 29397 [2021-11-02 22:54:43,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:54:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29397 states. [2021-11-02 22:54:45,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29397 to 26700. [2021-11-02 22:54:45,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26700 states, 26688 states have (on average 1.819207134292566) internal successors, (48551), 26699 states have internal predecessors, (48551), 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) [2021-11-02 22:54:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26700 states to 26700 states and 48551 transitions. [2021-11-02 22:54:45,560 INFO L78 Accepts]: Start accepts. Automaton has 26700 states and 48551 transitions. Word has length 85 [2021-11-02 22:54:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:45,561 INFO L470 AbstractCegarLoop]: Abstraction has 26700 states and 48551 transitions. [2021-11-02 22:54:45,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2021-11-02 22:54:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 26700 states and 48551 transitions. [2021-11-02 22:54:45,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 22:54:45,617 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:45,617 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:45,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:54:45,618 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1982522157, now seen corresponding path program 1 times [2021-11-02 22:54:45,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:45,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039135324] [2021-11-02 22:54:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:45,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:54:45,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:45,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039135324] [2021-11-02 22:54:45,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039135324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:45,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:45,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:54:45,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993420497] [2021-11-02 22:54:45,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:54:45,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:45,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:54:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:45,788 INFO L87 Difference]: Start difference. First operand 26700 states and 48551 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2021-11-02 22:54:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:47,703 INFO L93 Difference]: Finished difference Result 29367 states and 53022 transitions. [2021-11-02 22:54:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:54:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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 86 [2021-11-02 22:54:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:47,767 INFO L225 Difference]: With dead ends: 29367 [2021-11-02 22:54:47,768 INFO L226 Difference]: Without dead ends: 27911 [2021-11-02 22:54:47,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:54:47,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27911 states. [2021-11-02 22:54:49,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27911 to 26694. [2021-11-02 22:54:49,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26694 states, 26682 states have (on average 1.819129000824526) internal successors, (48538), 26693 states have internal predecessors, (48538), 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) [2021-11-02 22:54:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26694 states to 26694 states and 48538 transitions. [2021-11-02 22:54:49,178 INFO L78 Accepts]: Start accepts. Automaton has 26694 states and 48538 transitions. Word has length 86 [2021-11-02 22:54:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:49,178 INFO L470 AbstractCegarLoop]: Abstraction has 26694 states and 48538 transitions. [2021-11-02 22:54:49,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2021-11-02 22:54:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 26694 states and 48538 transitions. [2021-11-02 22:54:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-02 22:54:49,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:49,220 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:49,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:54:49,221 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:49,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1332398538, now seen corresponding path program 1 times [2021-11-02 22:54:49,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:49,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381731081] [2021-11-02 22:54:49,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:49,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:54:49,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:49,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381731081] [2021-11-02 22:54:49,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381731081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:49,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:49,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:54:49,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009198673] [2021-11-02 22:54:49,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:54:49,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:54:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:54:49,306 INFO L87 Difference]: Start difference. First operand 26694 states and 48538 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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) [2021-11-02 22:54:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:54:51,131 INFO L93 Difference]: Finished difference Result 52619 states and 95749 transitions. [2021-11-02 22:54:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:54:51,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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 86 [2021-11-02 22:54:51,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:54:51,301 INFO L225 Difference]: With dead ends: 52619 [2021-11-02 22:54:51,301 INFO L226 Difference]: Without dead ends: 39082 [2021-11-02 22:54:51,327 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:54:51,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39082 states. [2021-11-02 22:54:52,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39082 to 26409. [2021-11-02 22:54:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26409 states, 26397 states have (on average 1.819865893851574) internal successors, (48039), 26408 states have internal predecessors, (48039), 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) [2021-11-02 22:54:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26409 states to 26409 states and 48039 transitions. [2021-11-02 22:54:52,986 INFO L78 Accepts]: Start accepts. Automaton has 26409 states and 48039 transitions. Word has length 86 [2021-11-02 22:54:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:54:52,986 INFO L470 AbstractCegarLoop]: Abstraction has 26409 states and 48039 transitions. [2021-11-02 22:54:52,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 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) [2021-11-02 22:54:52,986 INFO L276 IsEmpty]: Start isEmpty. Operand 26409 states and 48039 transitions. [2021-11-02 22:54:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-02 22:54:53,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:54:53,005 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:54:53,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:54:53,006 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:54:53,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:54:53,007 INFO L85 PathProgramCache]: Analyzing trace with hash -439665503, now seen corresponding path program 1 times [2021-11-02 22:54:53,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:54:53,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503197530] [2021-11-02 22:54:53,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:54:53,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:54:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:54:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:54:53,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:54:53,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503197530] [2021-11-02 22:54:53,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503197530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:54:53,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:54:53,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:54:53,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48414238] [2021-11-02 22:54:53,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:54:53,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:54:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:54:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:54:53,154 INFO L87 Difference]: Start difference. First operand 26409 states and 48039 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 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) [2021-11-02 22:55:01,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:01,165 INFO L93 Difference]: Finished difference Result 62093 states and 111330 transitions. [2021-11-02 22:55:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 22:55:01,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 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) Word has length 88 [2021-11-02 22:55:01,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:01,316 INFO L225 Difference]: With dead ends: 62093 [2021-11-02 22:55:01,316 INFO L226 Difference]: Without dead ends: 60755 [2021-11-02 22:55:01,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:55:01,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60755 states. [2021-11-02 22:55:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60755 to 53677. [2021-11-02 22:55:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53677 states, 53665 states have (on average 1.8177769495947078) internal successors, (97551), 53676 states have internal predecessors, (97551), 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) [2021-11-02 22:55:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53677 states to 53677 states and 97551 transitions. [2021-11-02 22:55:04,390 INFO L78 Accepts]: Start accepts. Automaton has 53677 states and 97551 transitions. Word has length 88 [2021-11-02 22:55:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:04,390 INFO L470 AbstractCegarLoop]: Abstraction has 53677 states and 97551 transitions. [2021-11-02 22:55:04,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 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) [2021-11-02 22:55:04,390 INFO L276 IsEmpty]: Start isEmpty. Operand 53677 states and 97551 transitions. [2021-11-02 22:55:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:55:04,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:04,416 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:04,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:55:04,417 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:55:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:04,418 INFO L85 PathProgramCache]: Analyzing trace with hash 756565961, now seen corresponding path program 1 times [2021-11-02 22:55:04,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:04,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751553645] [2021-11-02 22:55:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:04,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:55:04,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:04,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751553645] [2021-11-02 22:55:04,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751553645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:04,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:04,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:55:04,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177728519] [2021-11-02 22:55:04,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:55:04,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:04,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:55:04,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:55:04,538 INFO L87 Difference]: Start difference. First operand 53677 states and 97551 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2021-11-02 22:55:07,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:07,701 INFO L93 Difference]: Finished difference Result 60587 states and 109182 transitions. [2021-11-02 22:55:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:55:07,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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 89 [2021-11-02 22:55:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:07,829 INFO L225 Difference]: With dead ends: 60587 [2021-11-02 22:55:07,830 INFO L226 Difference]: Without dead ends: 56717 [2021-11-02 22:55:07,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:55:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56717 states. [2021-11-02 22:55:10,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56717 to 53635. [2021-11-02 22:55:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53635 states, 53623 states have (on average 1.8172985472651662) internal successors, (97449), 53634 states have internal predecessors, (97449), 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) [2021-11-02 22:55:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53635 states to 53635 states and 97449 transitions. [2021-11-02 22:55:10,954 INFO L78 Accepts]: Start accepts. Automaton has 53635 states and 97449 transitions. Word has length 89 [2021-11-02 22:55:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:10,955 INFO L470 AbstractCegarLoop]: Abstraction has 53635 states and 97449 transitions. [2021-11-02 22:55:10,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 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) [2021-11-02 22:55:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 53635 states and 97449 transitions. [2021-11-02 22:55:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:55:10,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:10,987 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:10,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:55:10,988 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:55:10,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1321473790, now seen corresponding path program 1 times [2021-11-02 22:55:10,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:10,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684883955] [2021-11-02 22:55:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:10,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:11,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:55:11,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:11,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684883955] [2021-11-02 22:55:11,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684883955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:11,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:11,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 22:55:11,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66152552] [2021-11-02 22:55:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:55:11,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:11,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:55:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:55:11,165 INFO L87 Difference]: Start difference. First operand 53635 states and 97449 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2021-11-02 22:55:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:14,720 INFO L93 Difference]: Finished difference Result 59446 states and 107034 transitions. [2021-11-02 22:55:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:55:14,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 89 [2021-11-02 22:55:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:14,848 INFO L225 Difference]: With dead ends: 59446 [2021-11-02 22:55:14,848 INFO L226 Difference]: Without dead ends: 55768 [2021-11-02 22:55:14,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:55:14,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55768 states. [2021-11-02 22:55:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55768 to 53527. [2021-11-02 22:55:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53527 states, 53515 states have (on average 1.8165934784639821) internal successors, (97215), 53526 states have internal predecessors, (97215), 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) [2021-11-02 22:55:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53527 states to 53527 states and 97215 transitions. [2021-11-02 22:55:17,763 INFO L78 Accepts]: Start accepts. Automaton has 53527 states and 97215 transitions. Word has length 89 [2021-11-02 22:55:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:17,764 INFO L470 AbstractCegarLoop]: Abstraction has 53527 states and 97215 transitions. [2021-11-02 22:55:17,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2021-11-02 22:55:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 53527 states and 97215 transitions. [2021-11-02 22:55:17,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:55:17,804 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:17,804 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:17,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 22:55:17,805 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:55:17,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -404754650, now seen corresponding path program 1 times [2021-11-02 22:55:17,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:17,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981621189] [2021-11-02 22:55:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:17,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:55:17,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:17,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981621189] [2021-11-02 22:55:17,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981621189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:17,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:17,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:55:17,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737529751] [2021-11-02 22:55:17,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:55:17,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:17,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:55:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:55:17,906 INFO L87 Difference]: Start difference. First operand 53527 states and 97215 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-02 22:55:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:23,428 INFO L93 Difference]: Finished difference Result 88373 states and 159080 transitions. [2021-11-02 22:55:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:55:23,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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 89 [2021-11-02 22:55:23,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:23,621 INFO L225 Difference]: With dead ends: 88373 [2021-11-02 22:55:23,621 INFO L226 Difference]: Without dead ends: 85894 [2021-11-02 22:55:23,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:55:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85894 states. [2021-11-02 22:55:27,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85894 to 80868. [2021-11-02 22:55:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80868 states, 80856 states have (on average 1.8149797170278026) internal successors, (146752), 80867 states have internal predecessors, (146752), 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) [2021-11-02 22:55:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80868 states to 80868 states and 146752 transitions. [2021-11-02 22:55:28,193 INFO L78 Accepts]: Start accepts. Automaton has 80868 states and 146752 transitions. Word has length 89 [2021-11-02 22:55:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:55:28,193 INFO L470 AbstractCegarLoop]: Abstraction has 80868 states and 146752 transitions. [2021-11-02 22:55:28,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 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) [2021-11-02 22:55:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 80868 states and 146752 transitions. [2021-11-02 22:55:28,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:55:28,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:55:28,246 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:55:28,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 22:55:28,246 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-02 22:55:28,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:55:28,247 INFO L85 PathProgramCache]: Analyzing trace with hash -264206040, now seen corresponding path program 1 times [2021-11-02 22:55:28,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:55:28,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934981665] [2021-11-02 22:55:28,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:55:28,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:55:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:55:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:55:28,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:55:28,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934981665] [2021-11-02 22:55:28,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934981665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:55:28,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:55:28,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:55:28,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014446319] [2021-11-02 22:55:28,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:55:28,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:55:28,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:55:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:55:28,398 INFO L87 Difference]: Start difference. First operand 80868 states and 146752 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 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) [2021-11-02 22:55:38,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:55:38,607 INFO L93 Difference]: Finished difference Result 113523 states and 200801 transitions. [2021-11-02 22:55:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 22:55:38,608 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 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 89 [2021-11-02 22:55:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:55:38,960 INFO L225 Difference]: With dead ends: 113523 [2021-11-02 22:55:38,960 INFO L226 Difference]: Without dead ends: 108028 [2021-11-02 22:55:39,034 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:55:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108028 states.